IndexOptimize.sql

SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE PROCEDURE [dbo].[IndexOptimize]

@Databases nvarchar(max) = NULL,
@FragmentationLow nvarchar(max) = NULL,
@FragmentationMedium nvarchar(max) = 'INDEX_REORGANIZE,INDEX_REBUILD_ONLINE,INDEX_REBUILD_OFFLINE',
@FragmentationHigh nvarchar(max) = 'INDEX_REBUILD_ONLINE,INDEX_REBUILD_OFFLINE',
@FragmentationLevel1 int = 5,
@FragmentationLevel2 int = 30,
@PageCountLevel int = 1000,
@SortInTempdb nvarchar(max) = 'N',
@MaxDOP int = NULL,
@FillFactor int = NULL,
@PadIndex nvarchar(max) = NULL,
@LOBCompaction nvarchar(max) = 'Y',
@UpdateStatistics nvarchar(max) = NULL,
@OnlyModifiedStatistics nvarchar(max) = 'N',
@StatisticsSample int = NULL,
@StatisticsResample nvarchar(max) = 'N',
@PartitionLevel nvarchar(max) = 'Y',
@MSShippedObjects nvarchar(max) = 'N',
@Indexes nvarchar(max) = NULL,
@TimeLimit int = NULL,
@Delay int = NULL,
@WaitAtLowPriorityMaxDuration int = NULL,
@WaitAtLowPriorityAbortAfterWait nvarchar(max) = NULL,
@AvailabilityGroups nvarchar(max) = NULL,
@LockTimeout int = NULL,
@LogToTable nvarchar(max) = 'N',
@Execute nvarchar(max) = 'Y'

AS

BEGIN

  ----------------------------------------------------------------------------------------------------
  --// Source: https://ola.hallengren.com                                                          //--
  ----------------------------------------------------------------------------------------------------

  SET NOCOUNT ON

  SET ARITHABORT ON

  SET NUMERIC_ROUNDABORT OFF

  DECLARE @StartMessage nvarchar(max)
  DECLARE @EndMessage nvarchar(max)
  DECLARE @DatabaseMessage nvarchar(max)
  DECLARE @ErrorMessage nvarchar(max)

  DECLARE @Version numeric(18,10)
  DECLARE @AmazonRDS bit

  DECLARE @Cluster nvarchar(max)

  DECLARE @StartTime datetime

  DECLARE @CurrentDBID int
  DECLARE @CurrentDatabaseID int
  DECLARE @CurrentDatabaseName nvarchar(max)
  DECLARE @CurrentIsDatabaseAccessible bit
  DECLARE @CurrentAvailabilityGroup nvarchar(max)
  DECLARE @CurrentAvailabilityGroupRole nvarchar(max)
  DECLARE @CurrentDatabaseMirroringRole nvarchar(max)
  DECLARE @CurrentIsReadOnly bit

  DECLARE @CurrentCommand01 nvarchar(max)
  DECLARE @CurrentCommand02 nvarchar(max)
  DECLARE @CurrentCommand03 nvarchar(max)
  DECLARE @CurrentCommand04 nvarchar(max)
  DECLARE @CurrentCommand05 nvarchar(max)
  DECLARE @CurrentCommand06 nvarchar(max)
  DECLARE @CurrentCommand07 nvarchar(max)
  DECLARE @CurrentCommand08 nvarchar(max)
  DECLARE @CurrentCommand09 nvarchar(max)
  DECLARE @CurrentCommand10 nvarchar(max)
  DECLARE @CurrentCommand11 nvarchar(max)
  DECLARE @CurrentCommand12 nvarchar(max)
  DECLARE @CurrentCommand13 nvarchar(max)
  DECLARE @CurrentCommand14 nvarchar(max)

  DECLARE @CurrentCommandOutput13 int
  DECLARE @CurrentCommandOutput14 int

  DECLARE @CurrentCommandType13 nvarchar(max)
  DECLARE @CurrentCommandType14 nvarchar(max)

  DECLARE @CurrentIxID int
  DECLARE @CurrentSchemaID int
  DECLARE @CurrentSchemaName nvarchar(max)
  DECLARE @CurrentObjectID int
  DECLARE @CurrentObjectName nvarchar(max)
  DECLARE @CurrentObjectType nvarchar(max)
  DECLARE @CurrentIsMemoryOptimized bit
  DECLARE @CurrentIndexID int
  DECLARE @CurrentIndexName nvarchar(max)
  DECLARE @CurrentIndexType int
  DECLARE @CurrentStatisticsID int
  DECLARE @CurrentStatisticsName nvarchar(max)
  DECLARE @CurrentPartitionID bigint
  DECLARE @CurrentPartitionNumber int
  DECLARE @CurrentPartitionCount int
  DECLARE @CurrentIsPartition bit
  DECLARE @CurrentIndexExists bit
  DECLARE @CurrentStatisticsExists bit
  DECLARE @CurrentIsImageText bit
  DECLARE @CurrentIsNewLOB bit
  DECLARE @CurrentIsFileStream bit
  DECLARE @CurrentIsColumnStore bit
  DECLARE @CurrentAllowPageLocks bit
  DECLARE @CurrentNoRecompute bit
  DECLARE @CurrentStatisticsModified bit
  DECLARE @CurrentOnReadOnlyFileGroup bit
  DECLARE @CurrentFragmentationLevel float
  DECLARE @CurrentPageCount bigint
  DECLARE @CurrentFragmentationGroup nvarchar(max)
  DECLARE @CurrentAction nvarchar(max)
  DECLARE @CurrentMaxDOP int
  DECLARE @CurrentUpdateStatistics nvarchar(max)
  DECLARE @CurrentStatisticsSample int
  DECLARE @CurrentStatisticsResample nvarchar(max)
  DECLARE @CurrentComment nvarchar(max)
  DECLARE @CurrentExtendedInfo xml
  DECLARE @CurrentDelay datetime

  DECLARE @tmpDatabases TABLE (ID int IDENTITY,
                               DatabaseName nvarchar(max),
                               DatabaseType nvarchar(max),
                               AvailabilityGroup bit,
                               Selected bit,
                               Completed bit,
                               PRIMARY KEY(Selected, Completed, ID))

  DECLARE @tmpAvailabilityGroups TABLE (ID int IDENTITY PRIMARY KEY,
                                        AvailabilityGroupName nvarchar(max),
                                        Selected bit)

  DECLARE @tmpDatabasesAvailabilityGroups TABLE (DatabaseName nvarchar(max), AvailabilityGroupName nvarchar(max))

  DECLARE @tmpIndexesStatistics TABLE (ID int IDENTITY,
                                       SchemaID int,
                                       SchemaName nvarchar(max),
                                       ObjectID int,
                                       ObjectName nvarchar(max),
                                       ObjectType nvarchar(max),
                                       IsMemoryOptimized bit,
                                       IndexID int,
                                       IndexName nvarchar(max),
                                       IndexType int,
                                       StatisticsID int,
                                       StatisticsName nvarchar(max),
                                       PartitionID bigint,
                                       PartitionNumber int,
                                       PartitionCount int,
                                       Selected bit,
                                       Completed bit,
                                       PRIMARY KEY(Selected, Completed, ID))

  DECLARE @SelectedDatabases TABLE (DatabaseName nvarchar(max),
                                    DatabaseType nvarchar(max),
                                    AvailabilityGroup nvarchar(max),
                                    Selected bit)

  DECLARE @SelectedAvailabilityGroups TABLE (AvailabilityGroupName nvarchar(max),
                                             Selected bit)

  DECLARE @SelectedIndexes TABLE (DatabaseName nvarchar(max),
                                  SchemaName nvarchar(max),
                                  ObjectName nvarchar(max),
                                  IndexName nvarchar(max),
                                  Selected bit)

  DECLARE @Actions TABLE ([Action] nvarchar(max))

  INSERT INTO @Actions([Action]) VALUES('INDEX_REBUILD_ONLINE')
  INSERT INTO @Actions([Action]) VALUES('INDEX_REBUILD_OFFLINE')
  INSERT INTO @Actions([Action]) VALUES('INDEX_REORGANIZE')

  DECLARE @ActionsPreferred TABLE (FragmentationGroup nvarchar(max),
                                   [Priority] int,
                                   [Action] nvarchar(max))

  DECLARE @CurrentActionsAllowed TABLE ([Action] nvarchar(max))

  DECLARE @Error int
  DECLARE @ReturnCode int

  SET @Error = 0
  SET @ReturnCode = 0

  SET @Version = CAST(LEFT(CAST(SERVERPROPERTY('ProductVersion') AS nvarchar(max)),CHARINDEX('.',CAST(SERVERPROPERTY('ProductVersion') AS nvarchar(max))) - 1) + '.' + REPLACE(RIGHT(CAST(SERVERPROPERTY('ProductVersion') AS nvarchar(max)), LEN(CAST(SERVERPROPERTY('ProductVersion') AS nvarchar(max))) - CHARINDEX('.',CAST(SERVERPROPERTY('ProductVersion') AS nvarchar(max)))),'.','') AS numeric(18,10))

  SET @AmazonRDS = CASE WHEN DB_ID('rdsadmin') IS NOT NULL AND SUSER_SNAME(0x01) = 'rdsa' THEN 1 ELSE 0 END

  ----------------------------------------------------------------------------------------------------
  --// Log initial information                                                                    //--
  ----------------------------------------------------------------------------------------------------

  SET @StartTime = CONVERT(datetime,CONVERT(nvarchar,GETDATE(),120),120)

  SET @StartMessage = 'Date and time: ' + CONVERT(nvarchar,@StartTime,120) + CHAR(13) + CHAR(10)
  SET @StartMessage = @StartMessage + 'Server: ' + CAST(SERVERPROPERTY('ServerName') AS nvarchar(max)) + CHAR(13) + CHAR(10)
  SET @StartMessage = @StartMessage + 'Version: ' + CAST(SERVERPROPERTY('ProductVersion') AS nvarchar(max)) + CHAR(13) + CHAR(10)
  SET @StartMessage = @StartMessage + 'Edition: ' + CAST(SERVERPROPERTY('Edition') AS nvarchar(max)) + CHAR(13) + CHAR(10)
  SET @StartMessage = @StartMessage + 'Procedure: ' + QUOTENAME(DB_NAME(DB_ID())) + '.' + (SELECT QUOTENAME(schemas.name) FROM sys.schemas schemas INNER JOIN sys.objects objects ON schemas.[schema_id] = objects.[schema_id] WHERE [object_id] = @@PROCID) + '.' + QUOTENAME(OBJECT_NAME(@@PROCID)) + CHAR(13) + CHAR(10)
  SET @StartMessage = @StartMessage + 'Parameters: @Databases = ' + ISNULL('''' + REPLACE(@Databases,'''','''''') + '''','NULL')
  SET @StartMessage = @StartMessage + ', @FragmentationLow = ' + ISNULL('''' + REPLACE(@FragmentationLow,'''','''''') + '''','NULL')
  SET @StartMessage = @StartMessage + ', @FragmentationMedium = ' + ISNULL('''' + REPLACE(@FragmentationMedium,'''','''''') + '''','NULL')
  SET @StartMessage = @StartMessage + ', @FragmentationHigh = ' + ISNULL('''' + REPLACE(@FragmentationHigh,'''','''''') + '''','NULL')
  SET @StartMessage = @StartMessage + ', @FragmentationLevel1 = ' + ISNULL(CAST(@FragmentationLevel1 AS nvarchar),'NULL')
  SET @StartMessage = @StartMessage + ', @FragmentationLevel2 = ' + ISNULL(CAST(@FragmentationLevel2 AS nvarchar),'NULL')
  SET @StartMessage = @StartMessage + ', @PageCountLevel = ' + ISNULL(CAST(@PageCountLevel AS nvarchar),'NULL')
  SET @StartMessage = @StartMessage + ', @SortInTempdb = ' + ISNULL('''' + REPLACE(@SortInTempdb,'''','''''') + '''','NULL')
  SET @StartMessage = @StartMessage + ', @MaxDOP = ' + ISNULL(CAST(@MaxDOP AS nvarchar),'NULL')
  SET @StartMessage = @StartMessage + ', @FillFactor = ' + ISNULL(CAST(@FillFactor AS nvarchar),'NULL')
  SET @StartMessage = @StartMessage + ', @PadIndex = ' + ISNULL('''' + REPLACE(@PadIndex,'''','''''') + '''','NULL')
  SET @StartMessage = @StartMessage + ', @LOBCompaction = ' + ISNULL('''' + REPLACE(@LOBCompaction,'''','''''') + '''','NULL')
  SET @StartMessage = @StartMessage + ', @UpdateStatistics = ' + ISNULL('''' + REPLACE(@UpdateStatistics,'''','''''') + '''','NULL')
  SET @StartMessage = @StartMessage + ', @OnlyModifiedStatistics = ' + ISNULL('''' + REPLACE(@OnlyModifiedStatistics,'''','''''') + '''','NULL')
  SET @StartMessage = @StartMessage + ', @StatisticsSample = ' + ISNULL(CAST(@StatisticsSample AS nvarchar),'NULL')
  SET @StartMessage = @StartMessage + ', @StatisticsResample = ' + ISNULL('''' + REPLACE(@StatisticsResample,'''','''''') + '''','NULL')
  SET @StartMessage = @StartMessage + ', @PartitionLevel = ' + ISNULL('''' + REPLACE(@PartitionLevel,'''','''''') + '''','NULL')
  SET @StartMessage = @StartMessage + ', @MSShippedObjects = ' + ISNULL('''' + REPLACE(@MSShippedObjects,'''','''''') + '''','NULL')
  SET @StartMessage = @StartMessage + ', @Indexes = ' + ISNULL('''' + REPLACE(@Indexes,'''','''''') + '''','NULL')
  SET @StartMessage = @StartMessage + ', @TimeLimit = ' + ISNULL(CAST(@TimeLimit AS nvarchar),'NULL')
  SET @StartMessage = @StartMessage + ', @Delay = ' + ISNULL(CAST(@Delay AS nvarchar),'NULL')
  SET @StartMessage = @StartMessage + ', @WaitAtLowPriorityMaxDuration = ' + ISNULL(CAST(@WaitAtLowPriorityMaxDuration AS nvarchar),'NULL')
  SET @StartMessage = @StartMessage + ', @WaitAtLowPriorityAbortAfterWait = ' + ISNULL('''' + REPLACE(@WaitAtLowPriorityAbortAfterWait,'''','''''') + '''','NULL')
  SET @StartMessage = @StartMessage + ', @AvailabilityGroups = ' + ISNULL('''' + REPLACE(@AvailabilityGroups,'''','''''') + '''','NULL')
  SET @StartMessage = @StartMessage + ', @LockTimeout = ' + ISNULL(CAST(@LockTimeout AS nvarchar),'NULL')
  SET @StartMessage = @StartMessage + ', @LogToTable = ' + ISNULL('''' + REPLACE(@LogToTable,'''','''''') + '''','NULL')
  SET @StartMessage = @StartMessage + ', @Execute = ' + ISNULL('''' + REPLACE(@Execute,'''','''''') + '''','NULL') + CHAR(13) + CHAR(10)
  SET @StartMessage = @StartMessage + 'Source: https://ola.hallengren.com' + CHAR(13) + CHAR(10)
  SET @StartMessage = REPLACE(@StartMessage,'%','%%') + ' '
  RAISERROR(@StartMessage,10,1) WITH NOWAIT

  ----------------------------------------------------------------------------------------------------
  --// Check core requirements                                                                    //--
  ----------------------------------------------------------------------------------------------------

  IF NOT EXISTS (SELECT * FROM sys.objects objects INNER JOIN sys.schemas schemas ON objects.[schema_id] = schemas.[schema_id] WHERE objects.[type] = 'P' AND schemas.[name] = 'dbo' AND objects.[name] = 'CommandExecute')
  BEGIN
    SET @ErrorMessage = 'The stored procedure CommandExecute is missing. Download https://ola.hallengren.com/scripts/CommandExecute.sql.' + CHAR(13) + CHAR(10) + ' '
    RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
    SET @Error = @@ERROR
  END

  IF EXISTS (SELECT * FROM sys.objects objects INNER JOIN sys.schemas schemas ON objects.[schema_id] = schemas.[schema_id] WHERE objects.[type] = 'P' AND schemas.[name] = 'dbo' AND objects.[name] = 'CommandExecute' AND (OBJECT_DEFINITION(objects.[object_id]) NOT LIKE '%@LogToTable%' OR OBJECT_DEFINITION(objects.[object_id]) LIKE '%LOCK_TIMEOUT%'))
  BEGIN
    SET @ErrorMessage = 'The stored procedure CommandExecute needs to be updated. Download https://ola.hallengren.com/scripts/CommandExecute.sql.' + CHAR(13) + CHAR(10) + ' '
    RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
    SET @Error = @@ERROR
  END

  IF @LogToTable = 'Y' AND NOT EXISTS (SELECT * FROM sys.objects objects INNER JOIN sys.schemas schemas ON objects.[schema_id] = schemas.[schema_id] WHERE objects.[type] = 'U' AND schemas.[name] = 'dbo' AND objects.[name] = 'CommandLog')
  BEGIN
    SET @ErrorMessage = 'The table CommandLog is missing. Download https://ola.hallengren.com/scripts/CommandLog.sql.' + CHAR(13) + CHAR(10) + ' '
    RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
    SET @Error = @@ERROR
  END

  IF SERVERPROPERTY('EngineEdition') = 5 AND @Version < 12
  BEGIN
    SET @ErrorMessage = 'The stored procedure IndexOptimize is not supported on this version of Azure SQL Database.' + CHAR(13) + CHAR(10) + ' '
    RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
    SET @Error = @@ERROR
  END

  IF @Error <> 0
  BEGIN
    SET @ReturnCode = @Error
    GOTO Logging
  END

  ----------------------------------------------------------------------------------------------------
  --// Select databases                                                                           //--
  ----------------------------------------------------------------------------------------------------

  SET @Databases = REPLACE(@Databases, CHAR(10), '')
  SET @Databases = REPLACE(@Databases, CHAR(13), '')

  WHILE CHARINDEX(', ',@Databases) > 0 SET @Databases = REPLACE(@Databases,', ',',')
  WHILE CHARINDEX(' ,',@Databases) > 0 SET @Databases = REPLACE(@Databases,' ,',',')

  SET @Databases = LTRIM(RTRIM(@Databases));

  WITH Databases1 (StartPosition, EndPosition, DatabaseItem) AS
  (
  SELECT 1 AS StartPosition,
         ISNULL(NULLIF(CHARINDEX(',', @Databases, 1), 0), LEN(@Databases) + 1) AS EndPosition,
         SUBSTRING(@Databases, 1, ISNULL(NULLIF(CHARINDEX(',', @Databases, 1), 0), LEN(@Databases) + 1) - 1) AS DatabaseItem
  WHERE @Databases IS NOT NULL
  UNION ALL
  SELECT CAST(EndPosition AS int) + 1 AS StartPosition,
         ISNULL(NULLIF(CHARINDEX(',', @Databases, EndPosition + 1), 0), LEN(@Databases) + 1) AS EndPosition,
         SUBSTRING(@Databases, EndPosition + 1, ISNULL(NULLIF(CHARINDEX(',', @Databases, EndPosition + 1), 0), LEN(@Databases) + 1) - EndPosition - 1) AS DatabaseItem
  FROM Databases1
  WHERE EndPosition < LEN(@Databases) + 1
  ),
  Databases2 (DatabaseItem, Selected) AS
  (
  SELECT CASE WHEN DatabaseItem LIKE '-%' THEN RIGHT(DatabaseItem,LEN(DatabaseItem) - 1) ELSE DatabaseItem END AS DatabaseItem,
         CASE WHEN DatabaseItem LIKE '-%' THEN 0 ELSE 1 END AS Selected
  FROM Databases1
  ),
  Databases3 (DatabaseItem, DatabaseType, AvailabilityGroup, Selected) AS
  (
  SELECT CASE WHEN DatabaseItem IN('ALL_DATABASES','SYSTEM_DATABASES','USER_DATABASES','AVAILABILITY_GROUP_DATABASES') THEN '%' ELSE DatabaseItem END AS DatabaseItem,
         CASE WHEN DatabaseItem = 'SYSTEM_DATABASES' THEN 'S' WHEN DatabaseItem = 'USER_DATABASES' THEN 'U' ELSE NULL END AS DatabaseType,
         CASE WHEN DatabaseItem = 'AVAILABILITY_GROUP_DATABASES' THEN 1 ELSE NULL END AvailabilityGroup,
         Selected
  FROM Databases2
  ),
  Databases4 (DatabaseName, DatabaseType, AvailabilityGroup, Selected) AS
  (
  SELECT CASE WHEN LEFT(DatabaseItem,1) = '[' AND RIGHT(DatabaseItem,1) = ']' THEN PARSENAME(DatabaseItem,1) ELSE DatabaseItem END AS DatabaseItem,
         DatabaseType,
         AvailabilityGroup,
         Selected
  FROM Databases3
  )
  INSERT INTO @SelectedDatabases (DatabaseName, DatabaseType, AvailabilityGroup, Selected)
  SELECT DatabaseName,
         DatabaseType,
         AvailabilityGroup,
         Selected
  FROM Databases4
  OPTION (MAXRECURSION 0)

  IF @Version >= 11 AND SERVERPROPERTY('EngineEdition') <> 5
  BEGIN
    INSERT INTO @tmpDatabases (DatabaseName, DatabaseType, AvailabilityGroup, Selected, Completed)
    SELECT [name] AS DatabaseName,
           CASE WHEN name IN('master','msdb','model') THEN 'S' ELSE 'U' END AS DatabaseType,
           CASE WHEN name IN (SELECT availability_databases_cluster.database_name FROM sys.availability_databases_cluster availability_databases_cluster) THEN 1 ELSE 0 END AS AvailabilityGroup,
           0 AS Selected,
           0 AS Completed
    FROM sys.databases
    WHERE [name] <> 'tempdb'
    AND source_database_id IS NULL
    ORDER BY [name] ASC
  END
  ELSE
  BEGIN
    INSERT INTO @tmpDatabases (DatabaseName, DatabaseType, AvailabilityGroup, Selected, Completed)
    SELECT [name] AS DatabaseName,
           CASE WHEN name IN('master','msdb','model') THEN 'S' ELSE 'U' END AS DatabaseType,
           NULL AS AvailabilityGroup,
           0 AS Selected,
           0 AS Completed
    FROM sys.databases
    WHERE [name] <> 'tempdb'
    AND source_database_id IS NULL
    ORDER BY [name] ASC
  END

  UPDATE tmpDatabases
  SET tmpDatabases.Selected = SelectedDatabases.Selected
  FROM @tmpDatabases tmpDatabases
  INNER JOIN @SelectedDatabases SelectedDatabases
  ON tmpDatabases.DatabaseName LIKE REPLACE(SelectedDatabases.DatabaseName,'_','[_]')
  AND (tmpDatabases.DatabaseType = SelectedDatabases.DatabaseType OR SelectedDatabases.DatabaseType IS NULL)
  AND (tmpDatabases.AvailabilityGroup = SelectedDatabases.AvailabilityGroup OR SelectedDatabases.AvailabilityGroup IS NULL)
  WHERE SelectedDatabases.Selected = 1

  UPDATE tmpDatabases
  SET tmpDatabases.Selected = SelectedDatabases.Selected
  FROM @tmpDatabases tmpDatabases
  INNER JOIN @SelectedDatabases SelectedDatabases
  ON tmpDatabases.DatabaseName LIKE REPLACE(SelectedDatabases.DatabaseName,'_','[_]')
  AND (tmpDatabases.DatabaseType = SelectedDatabases.DatabaseType OR SelectedDatabases.DatabaseType IS NULL)
  AND (tmpDatabases.AvailabilityGroup = SelectedDatabases.AvailabilityGroup OR SelectedDatabases.AvailabilityGroup IS NULL)
  WHERE SelectedDatabases.Selected = 0

  IF @Databases IS NOT NULL AND (NOT EXISTS(SELECT * FROM @SelectedDatabases) OR EXISTS(SELECT * FROM @SelectedDatabases WHERE DatabaseName IS NULL OR DatabaseName = ''))
  BEGIN
    SET @ErrorMessage = 'The value for the parameter @Databases is not supported.' + CHAR(13) + CHAR(10) + ' '
    RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
    SET @Error = @@ERROR
  END

  ----------------------------------------------------------------------------------------------------
  --// Select availability groups                                                                 //--
  ----------------------------------------------------------------------------------------------------

  IF @AvailabilityGroups IS NOT NULL AND @Version >= 11
  BEGIN

    SET @AvailabilityGroups = REPLACE(@AvailabilityGroups, CHAR(10), '')
    SET @AvailabilityGroups = REPLACE(@AvailabilityGroups, CHAR(13), '')

    WHILE CHARINDEX(', ',@AvailabilityGroups) > 0 SET @AvailabilityGroups = REPLACE(@AvailabilityGroups,', ',',')
    WHILE CHARINDEX(' ,',@AvailabilityGroups) > 0 SET @AvailabilityGroups = REPLACE(@AvailabilityGroups,' ,',',')

    SET @AvailabilityGroups = LTRIM(RTRIM(@AvailabilityGroups));

    WITH AvailabilityGroups1 (StartPosition, EndPosition, AvailabilityGroupItem) AS
    (
    SELECT 1 AS StartPosition,
           ISNULL(NULLIF(CHARINDEX(',', @AvailabilityGroups, 1), 0), LEN(@AvailabilityGroups) + 1) AS EndPosition,
           SUBSTRING(@AvailabilityGroups, 1, ISNULL(NULLIF(CHARINDEX(',', @AvailabilityGroups, 1), 0), LEN(@AvailabilityGroups) + 1) - 1) AS AvailabilityGroupItem
    WHERE @AvailabilityGroups IS NOT NULL
    UNION ALL
    SELECT CAST(EndPosition AS int) + 1 AS StartPosition,
           ISNULL(NULLIF(CHARINDEX(',', @AvailabilityGroups, EndPosition + 1), 0), LEN(@AvailabilityGroups) + 1) AS EndPosition,
           SUBSTRING(@AvailabilityGroups, EndPosition + 1, ISNULL(NULLIF(CHARINDEX(',', @AvailabilityGroups, EndPosition + 1), 0), LEN(@AvailabilityGroups) + 1) - EndPosition - 1) AS AvailabilityGroupItem
    FROM AvailabilityGroups1
    WHERE EndPosition < LEN(@AvailabilityGroups) + 1
    ),
    AvailabilityGroups2 (AvailabilityGroupItem, Selected) AS
    (
    SELECT CASE WHEN AvailabilityGroupItem LIKE '-%' THEN RIGHT(AvailabilityGroupItem,LEN(AvailabilityGroupItem) - 1) ELSE AvailabilityGroupItem END AS AvailabilityGroupItem,
           CASE WHEN AvailabilityGroupItem LIKE '-%' THEN 0 ELSE 1 END AS Selected
    FROM AvailabilityGroups1
    ),
    AvailabilityGroups3 (AvailabilityGroupItem, Selected) AS
    (
    SELECT CASE WHEN AvailabilityGroupItem = 'ALL_AVAILABILITY_GROUPS' THEN '%' ELSE AvailabilityGroupItem END AS AvailabilityGroupItem,
           Selected
    FROM AvailabilityGroups2
    ),
    AvailabilityGroups4 (AvailabilityGroupName, Selected) AS
    (
    SELECT CASE WHEN LEFT(AvailabilityGroupItem,1) = '[' AND RIGHT(AvailabilityGroupItem,1) = ']' THEN PARSENAME(AvailabilityGroupItem,1) ELSE AvailabilityGroupItem END AS AvailabilityGroupItem,
           Selected
    FROM AvailabilityGroups3
    )
    INSERT INTO @SelectedAvailabilityGroups (AvailabilityGroupName, Selected)
    SELECT AvailabilityGroupName, Selected
    FROM AvailabilityGroups4
    OPTION (MAXRECURSION 0)

    INSERT INTO @tmpAvailabilityGroups (AvailabilityGroupName, Selected)
    SELECT name AS AvailabilityGroupName,
           0 AS Selected
    FROM sys.availability_groups

    UPDATE tmpAvailabilityGroups
    SET tmpAvailabilityGroups.Selected = SelectedAvailabilityGroups.Selected
    FROM @tmpAvailabilityGroups tmpAvailabilityGroups
    INNER JOIN @SelectedAvailabilityGroups SelectedAvailabilityGroups
    ON tmpAvailabilityGroups.AvailabilityGroupName LIKE REPLACE(SelectedAvailabilityGroups.AvailabilityGroupName,'_','[_]')
    WHERE SelectedAvailabilityGroups.Selected = 1

    UPDATE tmpAvailabilityGroups
    SET tmpAvailabilityGroups.Selected = SelectedAvailabilityGroups.Selected
    FROM @tmpAvailabilityGroups tmpAvailabilityGroups
    INNER JOIN @SelectedAvailabilityGroups SelectedAvailabilityGroups
    ON tmpAvailabilityGroups.AvailabilityGroupName LIKE REPLACE(SelectedAvailabilityGroups.AvailabilityGroupName,'_','[_]')
    WHERE SelectedAvailabilityGroups.Selected = 0

    INSERT INTO @tmpDatabasesAvailabilityGroups (DatabaseName, AvailabilityGroupName)
    SELECT availability_databases_cluster.database_name, availability_groups.name
    FROM sys.availability_databases_cluster availability_databases_cluster
    INNER JOIN sys.availability_groups availability_groups ON availability_databases_cluster.group_id = availability_groups.group_id

    UPDATE tmpDatabases
    SET Selected = 1
    FROM @tmpDatabases tmpDatabases
    INNER JOIN @tmpDatabasesAvailabilityGroups tmpDatabasesAvailabilityGroups ON tmpDatabases.DatabaseName = tmpDatabasesAvailabilityGroups.DatabaseName
    INNER JOIN @tmpAvailabilityGroups tmpAvailabilityGroups ON tmpDatabasesAvailabilityGroups.AvailabilityGroupName = tmpAvailabilityGroups.AvailabilityGroupName
    WHERE tmpAvailabilityGroups.Selected = 1

  END

  IF @AvailabilityGroups IS NOT NULL AND (NOT EXISTS(SELECT * FROM @SelectedAvailabilityGroups) OR EXISTS(SELECT * FROM @SelectedAvailabilityGroups WHERE AvailabilityGroupName IS NULL OR AvailabilityGroupName = '') OR @Version < 11)
  BEGIN
    SET @ErrorMessage = 'The value for the parameter @AvailabilityGroups is not supported.' + CHAR(13) + CHAR(10) + ' '
    RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
    SET @Error = @@ERROR
  END

  IF (@Databases IS NULL AND @AvailabilityGroups IS NULL)
  BEGIN
    SET @ErrorMessage = 'You need to specify one of the parameters @Databases and @AvailabilityGroups.' + CHAR(13) + CHAR(10) + ' '
    RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
    SET @Error = @@ERROR
  END

  IF (@Databases IS NOT NULL AND @AvailabilityGroups IS NOT NULL)
  BEGIN
    SET @ErrorMessage = 'You can only specify one of the parameters @Databases and @AvailabilityGroups.' + CHAR(13) + CHAR(10) + ' '
    RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
    SET @Error = @@ERROR
  END

  ----------------------------------------------------------------------------------------------------
  --// Select indexes                                                                             //--
  ----------------------------------------------------------------------------------------------------

  SET @Indexes = REPLACE(@Indexes, CHAR(10), '')
  SET @Indexes = REPLACE(@Indexes, CHAR(13), '')

  WHILE CHARINDEX(', ',@Indexes) > 0 SET @Indexes = REPLACE(@Indexes,', ',',')
  WHILE CHARINDEX(' ,',@Indexes) > 0 SET @Indexes = REPLACE(@Indexes,' ,',',')

  SET @Indexes = LTRIM(RTRIM(@Indexes));

  WITH Indexes1 (StartPosition, EndPosition, IndexItem) AS
  (
  SELECT 1 AS StartPosition,
         ISNULL(NULLIF(CHARINDEX(',', @Indexes, 1), 0), LEN(@Indexes) + 1) AS EndPosition,
         SUBSTRING(@Indexes, 1, ISNULL(NULLIF(CHARINDEX(',', @Indexes, 1), 0), LEN(@Indexes) + 1) - 1) AS IndexItem
  WHERE @Indexes IS NOT NULL
  UNION ALL
  SELECT CAST(EndPosition AS int) + 1 AS StartPosition,
         ISNULL(NULLIF(CHARINDEX(',', @Indexes, EndPosition + 1), 0), LEN(@Indexes) + 1) AS EndPosition,
         SUBSTRING(@Indexes, EndPosition + 1, ISNULL(NULLIF(CHARINDEX(',', @Indexes, EndPosition + 1), 0), LEN(@Indexes) + 1) - EndPosition - 1) AS IndexItem
  FROM Indexes1
  WHERE EndPosition < LEN(@Indexes) + 1
  ),
  Indexes2 (IndexItem, Selected) AS
  (
  SELECT CASE WHEN IndexItem LIKE '-%' THEN RIGHT(IndexItem,LEN(IndexItem) - 1) ELSE IndexItem END AS IndexItem,
         CASE WHEN IndexItem LIKE '-%' THEN 0 ELSE 1 END AS Selected
  FROM Indexes1
  ),
  Indexes3 (IndexItem, Selected) AS
  (
  SELECT CASE WHEN IndexItem = 'ALL_INDEXES' THEN '%.%.%.%' ELSE IndexItem END AS IndexItem,
         Selected
  FROM Indexes2
  ),
  Indexes4 (DatabaseName, SchemaName, ObjectName, IndexName, Selected) AS
  (
  SELECT CASE WHEN PARSENAME(IndexItem,4) IS NULL THEN PARSENAME(IndexItem,3) ELSE PARSENAME(IndexItem,4) END AS DatabaseName,
         CASE WHEN PARSENAME(IndexItem,4) IS NULL THEN PARSENAME(IndexItem,2) ELSE PARSENAME(IndexItem,3) END AS SchemaName,
         CASE WHEN PARSENAME(IndexItem,4) IS NULL THEN PARSENAME(IndexItem,1) ELSE PARSENAME(IndexItem,2) END AS ObjectName,
         CASE WHEN PARSENAME(IndexItem,4) IS NULL THEN '%' ELSE PARSENAME(IndexItem,1) END AS IndexName,
         Selected
  FROM Indexes3
  )
  INSERT INTO @SelectedIndexes (DatabaseName, SchemaName, ObjectName, IndexName, Selected)
  SELECT DatabaseName, SchemaName, ObjectName, IndexName, Selected
  FROM Indexes4
  OPTION (MAXRECURSION 0);

  ----------------------------------------------------------------------------------------------------
  --// Select actions                                                                             //--
  ----------------------------------------------------------------------------------------------------

  WITH FragmentationLow (StartPosition, EndPosition, [Action]) AS
  (
  SELECT 1 AS StartPosition,
         ISNULL(NULLIF(CHARINDEX(',', @FragmentationLow, 1), 0), LEN(@FragmentationLow) + 1) AS EndPosition,
         SUBSTRING(@FragmentationLow, 1, ISNULL(NULLIF(CHARINDEX(',', @FragmentationLow, 1), 0), LEN(@FragmentationLow) + 1) - 1) AS [Action]
  WHERE @FragmentationLow IS NOT NULL
  UNION ALL
  SELECT CAST(EndPosition AS int) + 1 AS StartPosition,
         ISNULL(NULLIF(CHARINDEX(',', @FragmentationLow, EndPosition + 1), 0), LEN(@FragmentationLow) + 1) AS EndPosition,
         SUBSTRING(@FragmentationLow, EndPosition + 1, ISNULL(NULLIF(CHARINDEX(',', @FragmentationLow, EndPosition + 1), 0), LEN(@FragmentationLow) + 1) - EndPosition - 1) AS [Action]
  FROM FragmentationLow
  WHERE EndPosition < LEN(@FragmentationLow) + 1
  )
  INSERT INTO @ActionsPreferred(FragmentationGroup, [Priority], [Action])
  SELECT 'Low' AS FragmentationGroup,
         ROW_NUMBER() OVER(ORDER BY StartPosition ASC) AS [Priority],
         [Action]
  FROM FragmentationLow
  OPTION (MAXRECURSION 0);

  WITH FragmentationMedium (StartPosition, EndPosition, [Action]) AS
  (
  SELECT 1 AS StartPosition,
         ISNULL(NULLIF(CHARINDEX(',', @FragmentationMedium, 1), 0), LEN(@FragmentationMedium) + 1) AS EndPosition,
         SUBSTRING(@FragmentationMedium, 1, ISNULL(NULLIF(CHARINDEX(',', @FragmentationMedium, 1), 0), LEN(@FragmentationMedium) + 1) - 1) AS [Action]
  WHERE @FragmentationMedium IS NOT NULL
  UNION ALL
  SELECT CAST(EndPosition AS int) + 1 AS StartPosition,
         ISNULL(NULLIF(CHARINDEX(',', @FragmentationMedium, EndPosition + 1), 0), LEN(@FragmentationMedium) + 1) AS EndPosition,
         SUBSTRING(@FragmentationMedium, EndPosition + 1, ISNULL(NULLIF(CHARINDEX(',', @FragmentationMedium, EndPosition + 1), 0), LEN(@FragmentationMedium) + 1) - EndPosition - 1) AS [Action]
  FROM FragmentationMedium
  WHERE EndPosition < LEN(@FragmentationMedium) + 1
  )
  INSERT INTO @ActionsPreferred(FragmentationGroup, [Priority], [Action])
  SELECT 'Medium' AS FragmentationGroup,
         ROW_NUMBER() OVER(ORDER BY StartPosition ASC) AS [Priority],
         [Action]
  FROM FragmentationMedium
  OPTION (MAXRECURSION 0);

  WITH FragmentationHigh (StartPosition, EndPosition, [Action]) AS
  (
  SELECT 1 AS StartPosition,
         ISNULL(NULLIF(CHARINDEX(',', @FragmentationHigh, 1), 0), LEN(@FragmentationHigh) + 1) AS EndPosition,
         SUBSTRING(@FragmentationHigh, 1, ISNULL(NULLIF(CHARINDEX(',', @FragmentationHigh, 1), 0), LEN(@FragmentationHigh) + 1) - 1) AS [Action]
  WHERE @FragmentationHigh IS NOT NULL
  UNION ALL
  SELECT CAST(EndPosition AS int) + 1 AS StartPosition,
         ISNULL(NULLIF(CHARINDEX(',', @FragmentationHigh, EndPosition + 1), 0), LEN(@FragmentationHigh) + 1) AS EndPosition,
         SUBSTRING(@FragmentationHigh, EndPosition + 1, ISNULL(NULLIF(CHARINDEX(',', @FragmentationHigh, EndPosition + 1), 0), LEN(@FragmentationHigh) + 1) - EndPosition - 1) AS [Action]
  FROM FragmentationHigh
  WHERE EndPosition < LEN(@FragmentationHigh) + 1
  )
  INSERT INTO @ActionsPreferred(FragmentationGroup, [Priority], [Action])
  SELECT 'High' AS FragmentationGroup,
         ROW_NUMBER() OVER(ORDER BY StartPosition ASC) AS [Priority],
         [Action]
  FROM FragmentationHigh
  OPTION (MAXRECURSION 0)

  ----------------------------------------------------------------------------------------------------
  --// Check input parameters                                                                     //--
  ----------------------------------------------------------------------------------------------------

  IF EXISTS (SELECT [Action] FROM @ActionsPreferred WHERE FragmentationGroup = 'Low' AND [Action] NOT IN(SELECT * FROM @Actions))
  OR EXISTS(SELECT * FROM @ActionsPreferred WHERE FragmentationGroup = 'Low' GROUP BY [Action] HAVING COUNT(*) > 1)
  BEGIN
    SET @ErrorMessage = 'The value for the parameter @FragmentationLow is not supported.' + CHAR(13) + CHAR(10) + ' '
    RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
    SET @Error = @@ERROR
  END

  IF EXISTS (SELECT [Action] FROM @ActionsPreferred WHERE FragmentationGroup = 'Medium' AND [Action] NOT IN(SELECT * FROM @Actions))
  OR EXISTS(SELECT * FROM @ActionsPreferred WHERE FragmentationGroup = 'Medium' GROUP BY [Action] HAVING COUNT(*) > 1)
  BEGIN
    SET @ErrorMessage = 'The value for the parameter @FragmentationMedium is not supported.' + CHAR(13) + CHAR(10) + ' '
    RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
    SET @Error = @@ERROR
  END

  IF EXISTS (SELECT [Action] FROM @ActionsPreferred WHERE FragmentationGroup = 'High' AND [Action] NOT IN(SELECT * FROM @Actions))
  OR EXISTS(SELECT * FROM @ActionsPreferred WHERE FragmentationGroup = 'High' GROUP BY [Action] HAVING COUNT(*) > 1)
  BEGIN
    SET @ErrorMessage = 'The value for the parameter @FragmentationHigh is not supported.' + CHAR(13) + CHAR(10) + ' '
    RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
    SET @Error = @@ERROR
  END

  IF @FragmentationLevel1 <= 0 OR @FragmentationLevel1 >= 100 OR @FragmentationLevel1 >= @FragmentationLevel2 OR @FragmentationLevel1 IS NULL
  BEGIN
    SET @ErrorMessage = 'The value for the parameter @FragmentationLevel1 is not supported.' + CHAR(13) + CHAR(10) + ' '
    RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
    SET @Error = @@ERROR
  END

  IF @FragmentationLevel2 <= 0 OR @FragmentationLevel2 >= 100 OR @FragmentationLevel2 <= @FragmentationLevel1 OR @FragmentationLevel2 IS NULL
  BEGIN
    SET @ErrorMessage = 'The value for the parameter @FragmentationLevel2 is not supported.' + CHAR(13) + CHAR(10) + ' '
    RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
    SET @Error = @@ERROR
  END

  IF @PageCountLevel < 0 OR @PageCountLevel IS NULL
  BEGIN
    SET @ErrorMessage = 'The value for the parameter @PageCountLevel is not supported.' + CHAR(13) + CHAR(10) + ' '
    RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
    SET @Error = @@ERROR
  END

  IF @SortInTempdb NOT IN('Y','N') OR @SortInTempdb IS NULL
  BEGIN
    SET @ErrorMessage = 'The value for the parameter @SortInTempdb is not supported.' + CHAR(13) + CHAR(10) + ' '
    RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
    SET @Error = @@ERROR
  END

  IF @MaxDOP < 0 OR @MaxDOP > 64 OR (@MaxDOP > 1 AND SERVERPROPERTY('EngineEdition') NOT IN (3,5))
  BEGIN
    SET @ErrorMessage = 'The value for the parameter @MaxDOP is not supported.' + CHAR(13) + CHAR(10) + ' '
    RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
    SET @Error = @@ERROR
  END

  IF @FillFactor <= 0 OR @FillFactor > 100
  BEGIN
    SET @ErrorMessage = 'The value for the parameter @FillFactor is not supported.' + CHAR(13) + CHAR(10) + ' '
    RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
    SET @Error = @@ERROR
  END

  IF @PadIndex NOT IN('Y','N')
  BEGIN
    SET @ErrorMessage = 'The value for the parameter @PadIndex is not supported.' + CHAR(13) + CHAR(10) + ' '
    RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
    SET @Error = @@ERROR
  END

  IF @LOBCompaction NOT IN('Y','N') OR @LOBCompaction IS NULL
  BEGIN
    SET @ErrorMessage = 'The value for the parameter @LOBCompaction is not supported.' + CHAR(13) + CHAR(10) + ' '
    RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
    SET @Error = @@ERROR
  END

  IF @UpdateStatistics NOT IN('ALL','COLUMNS','INDEX')
  BEGIN
    SET @ErrorMessage = 'The value for the parameter @UpdateStatistics is not supported.' + CHAR(13) + CHAR(10) + ' '
    RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
    SET @Error = @@ERROR
  END

  IF @OnlyModifiedStatistics NOT IN('Y','N') OR @OnlyModifiedStatistics IS NULL
  BEGIN
    SET @ErrorMessage = 'The value for the parameter @OnlyModifiedStatistics is not supported.' + CHAR(13) + CHAR(10) + ' '
    RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
    SET @Error = @@ERROR
  END

  IF @StatisticsSample <= 0 OR @StatisticsSample  > 100
  BEGIN
    SET @ErrorMessage = 'The value for the parameter @StatisticsSample is not supported.' + CHAR(13) + CHAR(10) + ' '
    RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
    SET @Error = @@ERROR
  END

  IF @StatisticsResample NOT IN('Y','N') OR @StatisticsResample IS NULL OR (@StatisticsResample = 'Y' AND @StatisticsSample IS NOT NULL)
  BEGIN
    SET @ErrorMessage = 'The value for the parameter @StatisticsResample is not supported.' + CHAR(13) + CHAR(10) + ' '
    RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
    SET @Error = @@ERROR
  END

  IF @PartitionLevel NOT IN('Y','N') OR @PartitionLevel IS NULL
  BEGIN
    SET @ErrorMessage = 'The value for the parameter @PartitionLevel is not supported.' + CHAR(13) + CHAR(10) + ' '
    RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
    SET @Error = @@ERROR
  END

  IF @MSShippedObjects NOT IN('Y','N') OR @MSShippedObjects IS NULL
  BEGIN
    SET @ErrorMessage = 'The value for the parameter @MSShippedObjects is not supported.' + CHAR(13) + CHAR(10) + ' '
    RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
    SET @Error = @@ERROR
  END

  IF EXISTS(SELECT * FROM @SelectedIndexes WHERE DatabaseName IS NULL OR SchemaName IS NULL OR ObjectName IS NULL OR IndexName IS NULL) OR (@Indexes IS NOT NULL AND NOT EXISTS(SELECT * FROM @SelectedIndexes))
  BEGIN
    SET @ErrorMessage = 'The value for the parameter @Indexes is not supported.' + CHAR(13) + CHAR(10) + ' '
    RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
    SET @Error = @@ERROR
  END

  IF @TimeLimit < 0
  BEGIN
    SET @ErrorMessage = 'The value for the parameter @TimeLimit is not supported.' + CHAR(13) + CHAR(10) + ' '
    RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
    SET @Error = @@ERROR
  END

  IF @Delay < 0
  BEGIN
    SET @ErrorMessage = 'The value for the parameter @Delay is not supported.' + CHAR(13) + CHAR(10) + ' '
    RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
    SET @Error = @@ERROR
  END

  IF @WaitAtLowPriorityMaxDuration < 0 OR (@WaitAtLowPriorityMaxDuration IS NOT NULL AND @Version < 12) OR (@WaitAtLowPriorityMaxDuration IS NOT NULL AND @WaitAtLowPriorityAbortAfterWait IS NULL) OR (@WaitAtLowPriorityMaxDuration IS NULL AND @WaitAtLowPriorityAbortAfterWait IS NOT NULL)
  BEGIN
    SET @ErrorMessage = 'The value for the parameter @WaitAtLowPriorityMaxDuration is not supported.' + CHAR(13) + CHAR(10) + ' '
    RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
    SET @Error = @@ERROR
  END

  IF @WaitAtLowPriorityAbortAfterWait NOT IN('NONE','SELF','BLOCKERS') OR (@WaitAtLowPriorityAbortAfterWait IS NOT NULL AND @Version < 12) OR (@WaitAtLowPriorityAbortAfterWait IS NOT NULL AND @WaitAtLowPriorityMaxDuration IS NULL) OR (@WaitAtLowPriorityAbortAfterWait IS NULL AND @WaitAtLowPriorityMaxDuration IS NOT NULL)
  BEGIN
    SET @ErrorMessage = 'The value for the parameter @WaitAtLowPriorityAbortAfterWait is not supported.' + CHAR(13) + CHAR(10) + ' '
    RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
    SET @Error = @@ERROR
  END

  IF @LockTimeout < 0
  BEGIN
    SET @ErrorMessage = 'The value for the parameter @LockTimeout is not supported.' + CHAR(13) + CHAR(10) + ' '
    RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
    SET @Error = @@ERROR
  END

  IF @LogToTable NOT IN('Y','N') OR @LogToTable IS NULL
  BEGIN
    SET @ErrorMessage = 'The value for the parameter @LogToTable is not supported.' + CHAR(13) + CHAR(10) + ' '
    RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
    SET @Error = @@ERROR
  END

  IF @Execute NOT IN('Y','N') OR @Execute IS NULL
  BEGIN
    SET @ErrorMessage = 'The value for the parameter @Execute is not supported.' + CHAR(13) + CHAR(10) + ' '
    RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
    SET @Error = @@ERROR
  END

  IF @Error <> 0
  BEGIN
    SET @ErrorMessage = 'The documentation is available at https://ola.hallengren.com/sql-server-index-and-statistics-maintenance.html.' + CHAR(13) + CHAR(10) + ' '
    RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
    SET @ReturnCode = @Error
    GOTO Logging
  END

  ----------------------------------------------------------------------------------------------------
  --// Check Availability Group cluster name                                                      //--
  ----------------------------------------------------------------------------------------------------

  IF @Version >= 11 AND SERVERPROPERTY('EngineEdition') <> 5
  BEGIN
    SELECT @Cluster = cluster_name
    FROM sys.dm_hadr_cluster
  END

  ----------------------------------------------------------------------------------------------------
  --// Execute commands                                                                           //--
  ----------------------------------------------------------------------------------------------------

  WHILE EXISTS (SELECT * FROM @tmpDatabases WHERE Selected = 1 AND Completed = 0)
  BEGIN

    SELECT TOP 1 @CurrentDBID = ID,
                 @CurrentDatabaseName = DatabaseName
    FROM @tmpDatabases
    WHERE Selected = 1
    AND Completed = 0
    ORDER BY ID ASC

    SET @CurrentDatabaseID = DB_ID(@CurrentDatabaseName)

    IF DATABASEPROPERTYEX(@CurrentDatabaseName,'Status') = 'ONLINE' AND SERVERPROPERTY('EngineEdition') <> 5
    BEGIN
      IF EXISTS (SELECT * FROM sys.database_recovery_status WHERE database_id = @CurrentDatabaseID AND database_guid IS NOT NULL)
      BEGIN
        SET @CurrentIsDatabaseAccessible = 1
      END
      ELSE
      BEGIN
        SET @CurrentIsDatabaseAccessible = 0
      END
    END

    IF @Version >= 11 AND @Cluster IS NOT NULL
    BEGIN
      SELECT @CurrentAvailabilityGroup = availability_groups.name,
             @CurrentAvailabilityGroupRole = dm_hadr_availability_replica_states.role_desc
      FROM sys.databases databases
      INNER JOIN sys.availability_databases_cluster availability_databases_cluster ON databases.group_database_id = availability_databases_cluster.group_database_id
      INNER JOIN sys.availability_groups availability_groups ON availability_databases_cluster.group_id = availability_groups.group_id
      INNER JOIN sys.dm_hadr_availability_replica_states dm_hadr_availability_replica_states ON availability_groups.group_id = dm_hadr_availability_replica_states.group_id AND databases.replica_id = dm_hadr_availability_replica_states.replica_id
      WHERE databases.name = @CurrentDatabaseName
    END

    IF SERVERPROPERTY('EngineEdition') <> 5
    BEGIN
      SELECT @CurrentDatabaseMirroringRole = UPPER(mirroring_role_desc)
      FROM sys.database_mirroring
      WHERE database_id = @CurrentDatabaseID
    END

    SELECT @CurrentIsReadOnly = is_read_only
    FROM sys.databases
    WHERE name = @CurrentDatabaseName

    -- Set database message
    SET @DatabaseMessage = 'Date and time: ' + CONVERT(nvarchar,GETDATE(),120) + CHAR(13) + CHAR(10)
    SET @DatabaseMessage = @DatabaseMessage + 'Database: ' + QUOTENAME(@CurrentDatabaseName) + CHAR(13) + CHAR(10)
    SET @DatabaseMessage = @DatabaseMessage + 'Status: ' + CAST(DATABASEPROPERTYEX(@CurrentDatabaseName,'Status') AS nvarchar) + CHAR(13) + CHAR(10)
    SET @DatabaseMessage = @DatabaseMessage + 'Standby: ' + CASE WHEN DATABASEPROPERTYEX(@CurrentDatabaseName,'IsInStandBy') = 1 THEN 'Yes' ELSE 'No' END + CHAR(13) + CHAR(10)
    SET @DatabaseMessage = @DatabaseMessage + 'Updateability: ' + CASE WHEN @CurrentIsReadOnly = 1 THEN 'READ_ONLY' WHEN  @CurrentIsReadOnly = 0 THEN 'READ_WRITE' END + CHAR(13) + CHAR(10)
    SET @DatabaseMessage = @DatabaseMessage + 'User access: ' + CAST(DATABASEPROPERTYEX(@CurrentDatabaseName,'UserAccess') AS nvarchar) + CHAR(13) + CHAR(10)
    IF @CurrentIsDatabaseAccessible IS NOT NULL SET @DatabaseMessage = @DatabaseMessage + 'Is accessible: ' + CASE WHEN @CurrentIsDatabaseAccessible = 1 THEN 'Yes' ELSE 'No' END + CHAR(13) + CHAR(10)
    SET @DatabaseMessage = @DatabaseMessage + 'Recovery model: ' + CAST(DATABASEPROPERTYEX(@CurrentDatabaseName,'Recovery') AS nvarchar) + CHAR(13) + CHAR(10)
    IF @CurrentAvailabilityGroup IS NOT NULL SET @DatabaseMessage = @DatabaseMessage + 'Availability group: ' + @CurrentAvailabilityGroup + CHAR(13) + CHAR(10)
    IF @CurrentAvailabilityGroup IS NOT NULL SET @DatabaseMessage = @DatabaseMessage + 'Availability group role: ' + @CurrentAvailabilityGroupRole + CHAR(13) + CHAR(10)
    IF @CurrentDatabaseMirroringRole IS NOT NULL SET @DatabaseMessage = @DatabaseMessage + 'Database mirroring role: ' + @CurrentDatabaseMirroringRole + CHAR(13) + CHAR(10)
    SET @DatabaseMessage = REPLACE(@DatabaseMessage,'%','%%') + ' '
    RAISERROR(@DatabaseMessage,10,1) WITH NOWAIT

    IF DATABASEPROPERTYEX(@CurrentDatabaseName,'Status') = 'ONLINE'
    AND (@CurrentIsDatabaseAccessible = 1 OR @CurrentIsDatabaseAccessible IS NULL)
    AND DATABASEPROPERTYEX(@CurrentDatabaseName,'Updateability') = 'READ_WRITE'
    BEGIN

      -- Select indexes in the current database
      IF (EXISTS(SELECT * FROM @ActionsPreferred) OR @UpdateStatistics IS NOT NULL) AND (GETDATE() < DATEADD(ss,@TimeLimit,@StartTime) OR @TimeLimit IS NULL)
      BEGIN
        SET @CurrentCommand01 = 'SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED; SELECT SchemaID, SchemaName, ObjectID, ObjectName, ObjectType, IsMemoryOptimized, IndexID, IndexName, IndexType, StatisticsID, StatisticsName, PartitionID, PartitionNumber, PartitionCount, Selected, Completed FROM ('

        IF EXISTS(SELECT * FROM @ActionsPreferred) OR @UpdateStatistics IN('ALL','INDEX')
        BEGIN
          SET @CurrentCommand01 = @CurrentCommand01 + 'SELECT schemas.[schema_id] AS SchemaID, schemas.[name] AS SchemaName, objects.[object_id] AS ObjectID, objects.[name] AS ObjectName, RTRIM(objects.[type]) AS ObjectType, ' + CASE WHEN @Version >= 12 THEN 'tables.is_memory_optimized' ELSE 'NULL' END + ' AS IsMemoryOptimized, indexes.index_id AS IndexID, indexes.[name] AS IndexName, indexes.[type] AS IndexType, stats.stats_id AS StatisticsID, stats.name AS StatisticsName'
          IF @PartitionLevel = 'Y' SET @CurrentCommand01 = @CurrentCommand01 + ', partitions.partition_id AS PartitionID, partitions.partition_number AS PartitionNumber, IndexPartitions.partition_count AS PartitionCount'
          IF @PartitionLevel = 'N' SET @CurrentCommand01 = @CurrentCommand01 + ', NULL AS PartitionID, NULL AS PartitionNumber, NULL AS PartitionCount'
          SET @CurrentCommand01 = @CurrentCommand01 + ', 0 AS Selected, 0 AS Completed FROM ' + QUOTENAME(@CurrentDatabaseName) + '.sys.indexes indexes INNER JOIN ' + QUOTENAME(@CurrentDatabaseName) + '.sys.objects objects ON indexes.[object_id] = objects.[object_id] INNER JOIN ' + QUOTENAME(@CurrentDatabaseName) + '.sys.schemas schemas ON objects.[schema_id] = schemas.[schema_id] LEFT OUTER JOIN ' + QUOTENAME(@CurrentDatabaseName) + '.sys.tables tables ON objects.[object_id] = tables.[object_id] LEFT OUTER JOIN ' + QUOTENAME(@CurrentDatabaseName) + '.sys.stats stats ON indexes.[object_id] = stats.[object_id] AND indexes.[index_id] = stats.[stats_id]'
          IF @PartitionLevel = 'Y' SET @CurrentCommand01 = @CurrentCommand01 + ' LEFT OUTER JOIN ' + QUOTENAME(@CurrentDatabaseName) + '.sys.partitions partitions ON indexes.[object_id] = partitions.[object_id] AND indexes.index_id = partitions.index_id LEFT OUTER JOIN (SELECT partitions.[object_id], partitions.index_id, COUNT(*) AS partition_count FROM ' + QUOTENAME(@CurrentDatabaseName) + '.sys.partitions partitions GROUP BY partitions.[object_id], partitions.index_id) IndexPartitions ON partitions.[object_id] = IndexPartitions.[object_id] AND partitions.[index_id] = IndexPartitions.[index_id]'
          IF @PartitionLevel = 'Y' SET @CurrentCommand01 = @CurrentCommand01 + ' LEFT OUTER JOIN ' + QUOTENAME(@CurrentDatabaseName) + '.sys.dm_db_partition_stats dm_db_partition_stats ON indexes.[object_id] = dm_db_partition_stats.[object_id] AND indexes.[index_id] = dm_db_partition_stats.[index_id] AND partitions.partition_id = dm_db_partition_stats.partition_id'
          IF @PartitionLevel = 'N' SET @CurrentCommand01 = @CurrentCommand01 + ' LEFT OUTER JOIN (SELECT dm_db_partition_stats.[object_id], dm_db_partition_stats.[index_id], SUM(dm_db_partition_stats.in_row_data_page_count) AS in_row_data_page_count FROM ' + QUOTENAME(@CurrentDatabaseName) + '.sys.dm_db_partition_stats dm_db_partition_stats GROUP BY dm_db_partition_stats.[object_id], dm_db_partition_stats.[index_id]) dm_db_partition_stats ON indexes.[object_id] = dm_db_partition_stats.[object_id] AND indexes.[index_id] = dm_db_partition_stats.[index_id]'
          SET @CurrentCommand01 = @CurrentCommand01 + ' WHERE objects.[type] IN(''U'',''V'')' + CASE WHEN @MSShippedObjects = 'N' THEN ' AND objects.is_ms_shipped = 0' ELSE '' END + ' AND indexes.[type] IN(1,2,3,4,5,6,7) AND indexes.is_disabled = 0 AND indexes.is_hypothetical = 0'
          IF (@UpdateStatistics NOT IN('ALL','INDEX') OR @UpdateStatistics IS NULL) AND @PageCountLevel > 0 SET @CurrentCommand01 = @CurrentCommand01 + ' AND (dm_db_partition_stats.in_row_data_page_count >= @ParamPageCountLevel OR dm_db_partition_stats.in_row_data_page_count IS NULL)'
          IF NOT EXISTS(SELECT * FROM @ActionsPreferred) SET @CurrentCommand01 = @CurrentCommand01 + ' AND stats.stats_id IS NOT NULL'
        END

        IF (EXISTS(SELECT * FROM @ActionsPreferred) AND @UpdateStatistics = 'COLUMNS') OR @UpdateStatistics = 'ALL' SET @CurrentCommand01 = @CurrentCommand01 + ' UNION '

        IF @UpdateStatistics IN('ALL','COLUMNS') SET @CurrentCommand01 = @CurrentCommand01 + 'SELECT schemas.[schema_id] AS SchemaID, schemas.[name] AS SchemaName, objects.[object_id] AS ObjectID, objects.[name] AS ObjectName, RTRIM(objects.[type]) AS ObjectType, ' + CASE WHEN @Version >= 12 THEN 'tables.is_memory_optimized' ELSE 'NULL' END + ' AS IsMemoryOptimized, NULL AS IndexID, NULL AS IndexName, NULL AS IndexType, stats.stats_id AS StatisticsID, stats.name AS StatisticsName, NULL AS PartitionID, NULL AS PartitionNumber, NULL AS PartitionCount, 0 AS Selected, 0 AS Completed FROM ' + QUOTENAME(@CurrentDatabaseName) + '.sys.stats stats INNER JOIN ' + QUOTENAME(@CurrentDatabaseName) + '.sys.objects objects ON stats.[object_id] = objects.[object_id] INNER JOIN ' + QUOTENAME(@CurrentDatabaseName) + '.sys.schemas schemas ON objects.[schema_id] = schemas.[schema_id] LEFT OUTER JOIN ' + QUOTENAME(@CurrentDatabaseName) + '.sys.tables tables ON objects.[object_id] = tables.[object_id] WHERE objects.[type] IN(''U'',''V'')' + CASE WHEN @MSShippedObjects = 'N' THEN ' AND objects.is_ms_shipped = 0' ELSE '' END + ' AND NOT EXISTS(SELECT * FROM ' + QUOTENAME(@CurrentDatabaseName) + '.sys.indexes indexes WHERE indexes.[object_id] = stats.[object_id] AND indexes.index_id = stats.stats_id)'

        SET @CurrentCommand01 = @CurrentCommand01 + ') IndexesStatistics ORDER BY SchemaName ASC, ObjectName ASC'
        IF (EXISTS(SELECT * FROM @ActionsPreferred) AND @UpdateStatistics = 'COLUMNS') OR @UpdateStatistics = 'ALL' SET @CurrentCommand01 = @CurrentCommand01 + ', CASE WHEN IndexType IS NULL THEN 1 ELSE 0 END ASC'
        IF EXISTS(SELECT * FROM @ActionsPreferred) OR @UpdateStatistics IN('ALL','INDEX') SET @CurrentCommand01 = @CurrentCommand01 + ', IndexType ASC, IndexName ASC'
        IF @UpdateStatistics IN('ALL','COLUMNS') SET @CurrentCommand01 = @CurrentCommand01 + ', StatisticsName ASC'
        IF @PartitionLevel = 'Y' SET @CurrentCommand01 = @CurrentCommand01 + ', PartitionNumber ASC'

        INSERT INTO @tmpIndexesStatistics (SchemaID, SchemaName, ObjectID, ObjectName, ObjectType, IsMemoryOptimized, IndexID, IndexName, IndexType, StatisticsID, StatisticsName, PartitionID, PartitionNumber, PartitionCount, Selected, Completed)
        EXECUTE sp_executesql @statement = @CurrentCommand01, @params = N'@ParamPageCountLevel int', @ParamPageCountLevel = @PageCountLevel
        SET @Error = @@ERROR
        IF @Error <> 0
        BEGIN
          SET @ReturnCode = @Error
        END
      END

      IF @Indexes IS NULL
      BEGIN
        UPDATE tmpIndexesStatistics
        SET tmpIndexesStatistics.Selected = 1
        FROM @tmpIndexesStatistics tmpIndexesStatistics
      END
      ELSE
      BEGIN
        UPDATE tmpIndexesStatistics
        SET tmpIndexesStatistics.Selected = SelectedIndexes.Selected
        FROM @tmpIndexesStatistics tmpIndexesStatistics
        INNER JOIN @SelectedIndexes SelectedIndexes
        ON @CurrentDatabaseName LIKE REPLACE(SelectedIndexes.DatabaseName,'_','[_]') AND tmpIndexesStatistics.SchemaName LIKE REPLACE(SelectedIndexes.SchemaName,'_','[_]') AND tmpIndexesStatistics.ObjectName LIKE REPLACE(SelectedIndexes.ObjectName,'_','[_]') AND COALESCE(tmpIndexesStatistics.IndexName,tmpIndexesStatistics.StatisticsName) LIKE REPLACE(SelectedIndexes.IndexName,'_','[_]')
        WHERE SelectedIndexes.Selected = 1

        UPDATE tmpIndexesStatistics
        SET tmpIndexesStatistics.Selected = SelectedIndexes.Selected
        FROM @tmpIndexesStatistics tmpIndexesStatistics
        INNER JOIN @SelectedIndexes SelectedIndexes
        ON @CurrentDatabaseName LIKE REPLACE(SelectedIndexes.DatabaseName,'_','[_]') AND tmpIndexesStatistics.SchemaName LIKE REPLACE(SelectedIndexes.SchemaName,'_','[_]') AND tmpIndexesStatistics.ObjectName LIKE REPLACE(SelectedIndexes.ObjectName,'_','[_]') AND COALESCE(tmpIndexesStatistics.IndexName,tmpIndexesStatistics.StatisticsName) LIKE REPLACE(SelectedIndexes.IndexName,'_','[_]')
        WHERE SelectedIndexes.Selected = 0
      END

      WHILE EXISTS (SELECT * FROM @tmpIndexesStatistics WHERE Selected = 1 AND Completed = 0 AND (GETDATE() < DATEADD(ss,@TimeLimit,@StartTime) OR @TimeLimit IS NULL))
      BEGIN

        SELECT TOP 1 @CurrentIxID = ID,
                     @CurrentSchemaID = SchemaID,
                     @CurrentSchemaName = SchemaName,
                     @CurrentObjectID = ObjectID,
                     @CurrentObjectName = ObjectName,
                     @CurrentObjectType = ObjectType,
                     @CurrentIsMemoryOptimized = IsMemoryOptimized,
                     @CurrentIndexID = IndexID,
                     @CurrentIndexName = IndexName,
                     @CurrentIndexType = IndexType,
                     @CurrentStatisticsID = StatisticsID,
                     @CurrentStatisticsName = StatisticsName,
                     @CurrentPartitionID = PartitionID,
                     @CurrentPartitionNumber = PartitionNumber,
                     @CurrentPartitionCount = PartitionCount
        FROM @tmpIndexesStatistics
        WHERE Selected = 1
        AND Completed = 0
        ORDER BY ID ASC

        -- Is the index a partition?
        IF @CurrentPartitionNumber IS NULL OR @CurrentPartitionCount = 1 BEGIN SET @CurrentIsPartition = 0 END ELSE BEGIN SET @CurrentIsPartition = 1 END

        -- Does the index exist?
        IF @CurrentIndexID IS NOT NULL AND EXISTS(SELECT * FROM @ActionsPreferred)
        BEGIN
          SET @CurrentCommand02 = ''
          IF @LockTimeout IS NOT NULL SET @CurrentCommand02 = 'SET LOCK_TIMEOUT ' + CAST(@LockTimeout * 1000 AS nvarchar) + '; '
          IF @CurrentIsPartition = 0 SET @CurrentCommand02 = @CurrentCommand02 + 'IF EXISTS(SELECT * FROM ' + QUOTENAME(@CurrentDatabaseName) + '.sys.indexes indexes INNER JOIN ' + QUOTENAME(@CurrentDatabaseName) + '.sys.objects objects ON indexes.[object_id] = objects.[object_id] INNER JOIN ' + QUOTENAME(@CurrentDatabaseName) + '.sys.schemas schemas ON objects.[schema_id] = schemas.[schema_id] WHERE objects.[type] IN(''U'',''V'')' + CASE WHEN @MSShippedObjects = 'N' THEN ' AND objects.is_ms_shipped = 0' ELSE '' END + ' AND indexes.[type] IN(1,2,3,4,5,6,7) AND indexes.is_disabled = 0 AND indexes.is_hypothetical = 0 AND schemas.[schema_id] = @ParamSchemaID AND schemas.[name] = @ParamSchemaName AND objects.[object_id] = @ParamObjectID AND objects.[name] = @ParamObjectName AND objects.[type] = @ParamObjectType AND indexes.index_id = @ParamIndexID AND indexes.[name] = @ParamIndexName AND indexes.[type] = @ParamIndexType) BEGIN SET @ParamIndexExists = 1 END'
          IF @CurrentIsPartition = 1 SET @CurrentCommand02 = @CurrentCommand02 + 'IF EXISTS(SELECT * FROM ' + QUOTENAME(@CurrentDatabaseName) + '.sys.indexes indexes INNER JOIN ' + QUOTENAME(@CurrentDatabaseName) + '.sys.objects objects ON indexes.[object_id] = objects.[object_id] INNER JOIN ' + QUOTENAME(@CurrentDatabaseName) + '.sys.schemas schemas ON objects.[schema_id] = schemas.[schema_id] INNER JOIN ' + QUOTENAME(@CurrentDatabaseName) + '.sys.partitions partitions ON indexes.[object_id] = partitions.[object_id] AND indexes.index_id = partitions.index_id WHERE objects.[type] IN(''U'',''V'')' + CASE WHEN @MSShippedObjects = 'N' THEN ' AND objects.is_ms_shipped = 0' ELSE '' END + ' AND indexes.[type] IN(1,2,3,4,5,6,7) AND indexes.is_disabled = 0 AND indexes.is_hypothetical = 0 AND schemas.[schema_id] = @ParamSchemaID AND schemas.[name] = @ParamSchemaName AND objects.[object_id] = @ParamObjectID AND objects.[name] = @ParamObjectName AND objects.[type] = @ParamObjectType AND indexes.index_id = @ParamIndexID AND indexes.[name] = @ParamIndexName AND indexes.[type] = @ParamIndexType AND partitions.partition_id = @ParamPartitionID AND partitions.partition_number = @ParamPartitionNumber) BEGIN SET @ParamIndexExists = 1 END'

          EXECUTE sp_executesql @statement = @CurrentCommand02, @params = N'@ParamSchemaID int, @ParamSchemaName sysname, @ParamObjectID int, @ParamObjectName sysname, @ParamObjectType sysname, @ParamIndexID int, @ParamIndexName sysname, @ParamIndexType int, @ParamPartitionID bigint, @ParamPartitionNumber int, @ParamIndexExists bit OUTPUT', @ParamSchemaID = @CurrentSchemaID, @ParamSchemaName = @CurrentSchemaName, @ParamObjectID = @CurrentObjectID, @ParamObjectName = @CurrentObjectName, @ParamObjectType = @CurrentObjectType, @ParamIndexID = @CurrentIndexID, @ParamIndexName = @CurrentIndexName, @ParamIndexType = @CurrentIndexType, @ParamPartitionID = @CurrentPartitionID, @ParamPartitionNumber = @CurrentPartitionNumber, @ParamIndexExists = @CurrentIndexExists OUTPUT
          SET @Error = @@ERROR
          IF @Error = 0 AND @CurrentIndexExists IS NULL SET @CurrentIndexExists = 0
          IF @Error = 1222
          BEGIN
            SET @ErrorMessage = 'The index ' + QUOTENAME(@CurrentIndexName) + ' on the object ' + QUOTENAME(@CurrentDatabaseName) + '.' + QUOTENAME(@CurrentSchemaName) + '.' + QUOTENAME(@CurrentObjectName) + ' is locked. It could not be checked if the index exists.' + CHAR(13) + CHAR(10) + ' '
            SET @ErrorMessage = REPLACE(@ErrorMessage,'%','%%')
            RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
          END
          IF @Error <> 0
          BEGIN
            SET @ReturnCode = @Error
            GOTO NoAction
          END
          IF @CurrentIndexExists = 0 GOTO NoAction
        END

        -- Does the statistics exist?
        IF @CurrentStatisticsID IS NOT NULL AND @UpdateStatistics IS NOT NULL
        BEGIN
          SET @CurrentCommand03 = ''
          IF @LockTimeout IS NOT NULL SET @CurrentCommand03 = 'SET LOCK_TIMEOUT ' + CAST(@LockTimeout * 1000 AS nvarchar) + '; '
          SET @CurrentCommand03 = @CurrentCommand03 + 'IF EXISTS(SELECT * FROM ' + QUOTENAME(@CurrentDatabaseName) + '.sys.stats stats INNER JOIN ' + QUOTENAME(@CurrentDatabaseName) + '.sys.objects objects ON stats.[object_id] = objects.[object_id] INNER JOIN ' + QUOTENAME(@CurrentDatabaseName) + '.sys.schemas schemas ON objects.[schema_id] = schemas.[schema_id] WHERE objects.[type] IN(''U'',''V'')' + CASE WHEN @MSShippedObjects = 'N' THEN ' AND objects.is_ms_shipped = 0' ELSE '' END + ' AND schemas.[schema_id] = @ParamSchemaID AND schemas.[name] = @ParamSchemaName AND objects.[object_id] = @ParamObjectID AND objects.[name] = @ParamObjectName AND objects.[type] = @ParamObjectType AND stats.stats_id = @ParamStatisticsID AND stats.[name] = @ParamStatisticsName) BEGIN SET @ParamStatisticsExists = 1 END'

          EXECUTE sp_executesql @statement = @CurrentCommand03, @params = N'@ParamSchemaID int, @ParamSchemaName sysname, @ParamObjectID int, @ParamObjectName sysname, @ParamObjectType sysname, @ParamStatisticsID int, @ParamStatisticsName sysname, @ParamStatisticsExists bit OUTPUT', @ParamSchemaID = @CurrentSchemaID, @ParamSchemaName = @CurrentSchemaName, @ParamObjectID = @CurrentObjectID, @ParamObjectName = @CurrentObjectName, @ParamObjectType = @CurrentObjectType, @ParamStatisticsID = @CurrentStatisticsID, @ParamStatisticsName = @CurrentStatisticsName, @ParamStatisticsExists = @CurrentStatisticsExists OUTPUT
          SET @Error = @@ERROR
          IF @Error = 0 AND @CurrentStatisticsExists IS NULL SET @CurrentStatisticsExists = 0
          IF @Error = 1222
          BEGIN
            SET @ErrorMessage = 'The statistics ' + QUOTENAME(@CurrentStatisticsName) + ' on the object ' + QUOTENAME(@CurrentDatabaseName) + '.' + QUOTENAME(@CurrentSchemaName) + '.' + QUOTENAME(@CurrentObjectName) + ' is locked. It could not be checked if the statistics exists.' + CHAR(13) + CHAR(10) + ' '
            SET @ErrorMessage = REPLACE(@ErrorMessage,'%','%%')
            RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
          END
          IF @Error <> 0
          BEGIN
            SET @ReturnCode = @Error
            GOTO NoAction
          END
          IF @CurrentStatisticsExists = 0 GOTO NoAction
        END

        -- Is one of the columns in the index an image, text or ntext data type?
        IF @CurrentIndexID IS NOT NULL AND @CurrentIndexType = 1 AND EXISTS(SELECT * FROM @ActionsPreferred)
        BEGIN
          SET @CurrentCommand04 = ''
          IF @LockTimeout IS NOT NULL SET @CurrentCommand04 = 'SET LOCK_TIMEOUT ' + CAST(@LockTimeout * 1000 AS nvarchar) + '; '
          SET @CurrentCommand04 = @CurrentCommand04 + 'IF EXISTS(SELECT * FROM ' + QUOTENAME(@CurrentDatabaseName) + '.sys.columns columns INNER JOIN ' + QUOTENAME(@CurrentDatabaseName) + '.sys.types types ON columns.system_type_id = types.user_type_id WHERE columns.[object_id] = @ParamObjectID AND types.name IN(''image'',''text'',''ntext'')) BEGIN SET @ParamIsImageText = 1 END'

          EXECUTE sp_executesql @statement = @CurrentCommand04, @params = N'@ParamObjectID int, @ParamIndexID int, @ParamIsImageText bit OUTPUT', @ParamObjectID = @CurrentObjectID, @ParamIndexID = @CurrentIndexID, @ParamIsImageText = @CurrentIsImageText OUTPUT
          SET @Error = @@ERROR
          IF @Error = 0 AND @CurrentIsImageText IS NULL SET @CurrentIsImageText = 0
          IF @Error = 1222
          BEGIN
            SET @ErrorMessage = 'The index ' + QUOTENAME(@CurrentIndexName) + ' on the object ' + QUOTENAME(@CurrentDatabaseName) + '.' + QUOTENAME(@CurrentSchemaName) + '.' + QUOTENAME(@CurrentObjectName) + ' is locked. It could not be checked if the index contains any image, text, or ntext data types.' + CHAR(13) + CHAR(10) + ' '
            SET @ErrorMessage = REPLACE(@ErrorMessage,'%','%%')
            RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
          END
          IF @Error <> 0
          BEGIN
            SET @ReturnCode = @Error
            GOTO NoAction
          END
        END

        -- Is one of the columns in the index an xml, varchar(max), nvarchar(max), varbinary(max) or large CLR data type?
        IF @CurrentIndexID IS NOT NULL AND @CurrentIndexType IN(1,2) AND EXISTS(SELECT * FROM @ActionsPreferred)
        BEGIN
          SET @CurrentCommand05 = ''
          IF @LockTimeout IS NOT NULL SET @CurrentCommand05 = 'SET LOCK_TIMEOUT ' + CAST(@LockTimeout * 1000 AS nvarchar) + '; '
          IF @CurrentIndexType = 1 SET @CurrentCommand05 = @CurrentCommand05 + 'IF EXISTS(SELECT * FROM ' + QUOTENAME(@CurrentDatabaseName) + '.sys.columns columns INNER JOIN ' + QUOTENAME(@CurrentDatabaseName) + '.sys.types types ON columns.system_type_id = types.user_type_id OR (columns.user_type_id = types.user_type_id AND types.is_assembly_type = 1) WHERE columns.[object_id] = @ParamObjectID AND (types.name IN(''xml'') OR (types.name IN(''varchar'',''nvarchar'',''varbinary'') AND columns.max_length = -1) OR (types.is_assembly_type = 1 AND columns.max_length = -1))) BEGIN SET @ParamIsNewLOB = 1 END'
          IF @CurrentIndexType = 2 SET @CurrentCommand05 = @CurrentCommand05 + 'IF EXISTS(SELECT * FROM ' + QUOTENAME(@CurrentDatabaseName) + '.sys.index_columns index_columns INNER JOIN ' + QUOTENAME(@CurrentDatabaseName) + '.sys.columns columns ON index_columns.[object_id] = columns.[object_id] AND index_columns.column_id = columns.column_id INNER JOIN ' + QUOTENAME(@CurrentDatabaseName) + '.sys.types types ON columns.system_type_id = types.user_type_id OR (columns.user_type_id = types.user_type_id AND types.is_assembly_type = 1) WHERE index_columns.[object_id] = @ParamObjectID AND index_columns.index_id = @ParamIndexID AND (types.[name] IN(''xml'') OR (types.[name] IN(''varchar'',''nvarchar'',''varbinary'') AND columns.max_length = -1) OR (types.is_assembly_type = 1 AND columns.max_length = -1))) BEGIN SET @ParamIsNewLOB = 1 END'

          EXECUTE sp_executesql @statement = @CurrentCommand05, @params = N'@ParamObjectID int, @ParamIndexID int, @ParamIsNewLOB bit OUTPUT', @ParamObjectID = @CurrentObjectID, @ParamIndexID = @CurrentIndexID, @ParamIsNewLOB = @CurrentIsNewLOB OUTPUT
          SET @Error = @@ERROR
          IF @Error = 0 AND @CurrentIsNewLOB IS NULL SET @CurrentIsNewLOB = 0
          IF @Error = 1222
          BEGIN
            SET @ErrorMessage = 'The index ' + QUOTENAME(@CurrentIndexName) + ' on the object ' + QUOTENAME(@CurrentDatabaseName) + '.' + QUOTENAME(@CurrentSchemaName) + '.' + QUOTENAME(@CurrentObjectName) + ' is locked. It could not be checked if the index contains any xml, varchar(max), nvarchar(max), varbinary(max), or large CLR data types.' + CHAR(13) + CHAR(10) + ' '
            SET @ErrorMessage = REPLACE(@ErrorMessage,'%','%%')
            RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
          END
          IF @Error <> 0
          BEGIN
            SET @ReturnCode = @Error
            GOTO NoAction
          END
        END

        -- Is one of the columns in the index a file stream column?
        IF @CurrentIndexID IS NOT NULL AND @CurrentIndexType = 1 AND EXISTS(SELECT * FROM @ActionsPreferred)
        BEGIN
          SET @CurrentCommand06 = ''
          IF @LockTimeout IS NOT NULL SET @CurrentCommand06 = 'SET LOCK_TIMEOUT ' + CAST(@LockTimeout * 1000 AS nvarchar) + '; '
          SET @CurrentCommand06 = @CurrentCommand06 + 'IF EXISTS(SELECT * FROM ' + QUOTENAME(@CurrentDatabaseName) + '.sys.columns columns WHERE columns.[object_id] = @ParamObjectID  AND columns.is_filestream = 1) BEGIN SET @ParamIsFileStream = 1 END'

          EXECUTE sp_executesql @statement = @CurrentCommand06, @params = N'@ParamObjectID int, @ParamIndexID int, @ParamIsFileStream bit OUTPUT', @ParamObjectID = @CurrentObjectID, @ParamIndexID = @CurrentIndexID, @ParamIsFileStream = @CurrentIsFileStream OUTPUT
          SET @Error = @@ERROR
          IF @Error = 0 AND @CurrentIsFileStream IS NULL SET @CurrentIsFileStream = 0
          IF @Error = 1222
          BEGIN
            SET @ErrorMessage = 'The index ' + QUOTENAME(@CurrentIndexName) + ' on the object ' + QUOTENAME(@CurrentDatabaseName) + '.' + QUOTENAME(@CurrentSchemaName) + '.' + QUOTENAME(@CurrentObjectName) + ' is locked. It could not be checked if the index contains any file stream columns.' + CHAR(13) + CHAR(10) + ' '
            SET @ErrorMessage = REPLACE(@ErrorMessage,'%','%%')
            RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
          END
          IF @Error <> 0
          BEGIN
            SET @ReturnCode = @Error
            GOTO NoAction
          END
        END

        -- Is there a columnstore index on the table?
        IF @CurrentIndexID IS NOT NULL AND EXISTS(SELECT * FROM @ActionsPreferred) AND @Version >= 11
        BEGIN
          SET @CurrentCommand07 = ''
          IF @LockTimeout IS NOT NULL SET @CurrentCommand07 = 'SET LOCK_TIMEOUT ' + CAST(@LockTimeout * 1000 AS nvarchar) + '; '
          SET @CurrentCommand07 = @CurrentCommand07 + 'IF EXISTS(SELECT * FROM ' + QUOTENAME(@CurrentDatabaseName) + '.sys.indexes indexes WHERE indexes.[object_id] = @ParamObjectID AND [type] IN(5,6)) BEGIN SET @ParamIsColumnStore = 1 END'

          EXECUTE sp_executesql @statement = @CurrentCommand07, @params = N'@ParamObjectID int, @ParamIsColumnStore bit OUTPUT', @ParamObjectID = @CurrentObjectID, @ParamIsColumnStore = @CurrentIsColumnStore OUTPUT
          SET @Error = @@ERROR
          IF @Error = 0 AND @CurrentIsColumnStore IS NULL SET @CurrentIsColumnStore = 0
          IF @Error = 1222
          BEGIN
            SET @ErrorMessage = 'The index ' + QUOTENAME(@CurrentIndexName) + ' on the object ' + QUOTENAME(@CurrentDatabaseName) + '.' + QUOTENAME(@CurrentSchemaName) + '.' + QUOTENAME(@CurrentObjectName) + ' is locked. It could not be checked if there is a columnstore index on the table.' + CHAR(13) + CHAR(10) + ' '
            SET @ErrorMessage = REPLACE(@ErrorMessage,'%','%%')
            RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
          END
          IF @Error <> 0
          BEGIN
            SET @ReturnCode = @Error
            GOTO NoAction
          END
        END

        -- Is Allow_Page_Locks set to On?
        IF @CurrentIndexID IS NOT NULL AND EXISTS(SELECT * FROM @ActionsPreferred)
        BEGIN
          SET @CurrentCommand08 = ''
          IF @LockTimeout IS NOT NULL SET @CurrentCommand08 = 'SET LOCK_TIMEOUT ' + CAST(@LockTimeout * 1000 AS nvarchar) + '; '
          SET @CurrentCommand08 = @CurrentCommand08 + 'IF EXISTS(SELECT * FROM ' + QUOTENAME(@CurrentDatabaseName) + '.sys.indexes indexes WHERE indexes.[object_id] = @ParamObjectID AND indexes.[index_id] = @ParamIndexID AND indexes.[allow_page_locks] = 1) BEGIN SET @ParamAllowPageLocks = 1 END'

          EXECUTE sp_executesql @statement = @CurrentCommand08, @params = N'@ParamObjectID int, @ParamIndexID int, @ParamAllowPageLocks bit OUTPUT', @ParamObjectID = @CurrentObjectID, @ParamIndexID = @CurrentIndexID, @ParamAllowPageLocks = @CurrentAllowPageLocks OUTPUT
          SET @Error = @@ERROR
          IF @Error = 0 AND @CurrentAllowPageLocks IS NULL SET @CurrentAllowPageLocks = 0
          IF @Error = 1222
          BEGIN
            SET @ErrorMessage = 'The index ' + QUOTENAME(@CurrentIndexName) + ' on the object ' + QUOTENAME(@CurrentDatabaseName) + '.' + QUOTENAME(@CurrentSchemaName) + '.' + QUOTENAME(@CurrentObjectName) + ' is locked. It could not be checked if page locking is enabled on the index.' + CHAR(13) + CHAR(10) + ' '
            SET @ErrorMessage = REPLACE(@ErrorMessage,'%','%%')
            RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
          END
          IF @Error <> 0
          BEGIN
            SET @ReturnCode = @Error
            GOTO NoAction
          END
        END

        -- Is No_Recompute set to On?
        IF @CurrentStatisticsID IS NOT NULL AND @UpdateStatistics IS NOT NULL
        BEGIN
          SET @CurrentCommand09 = ''
          IF @LockTimeout IS NOT NULL SET @CurrentCommand09 = 'SET LOCK_TIMEOUT ' + CAST(@LockTimeout * 1000 AS nvarchar) + '; '
          SET @CurrentCommand09 = @CurrentCommand09 + 'IF EXISTS(SELECT * FROM ' + QUOTENAME(@CurrentDatabaseName) + '.sys.stats stats WHERE stats.[object_id] = @ParamObjectID AND stats.[stats_id] = @ParamStatisticsID AND stats.[no_recompute] = 1) BEGIN SET @ParamNoRecompute = 1 END'

          EXECUTE sp_executesql @statement = @CurrentCommand09, @params = N'@ParamObjectID int, @ParamStatisticsID int, @ParamNoRecompute bit OUTPUT', @ParamObjectID = @CurrentObjectID, @ParamStatisticsID = @CurrentStatisticsID, @ParamNoRecompute = @CurrentNoRecompute OUTPUT
          SET @Error = @@ERROR
          IF @Error = 0 AND @CurrentNoRecompute IS NULL SET @CurrentNoRecompute = 0
          IF @Error = 1222
          BEGIN
            SET @ErrorMessage = 'The statistics ' + QUOTENAME(@CurrentStatisticsName) + ' on the object ' + QUOTENAME(@CurrentDatabaseName) + '.' + QUOTENAME(@CurrentSchemaName) + '.' + QUOTENAME(@CurrentObjectName) + ' is locked. It could not be checked if automatic statistics update is enabled.' + CHAR(13) + CHAR(10) + ' '
            SET @ErrorMessage = REPLACE(@ErrorMessage,'%','%%')
            RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
          END
          IF @Error <> 0
          BEGIN
            SET @ReturnCode = @Error
            GOTO NoAction
          END
        END

        -- Has the data in the statistics been modified since the statistics was last updated?
        IF @CurrentStatisticsID IS NOT NULL AND @UpdateStatistics IS NOT NULL AND @OnlyModifiedStatistics = 'Y'
        BEGIN
          SET @CurrentCommand10 = ''
          IF @LockTimeout IS NOT NULL SET @CurrentCommand10 = 'SET LOCK_TIMEOUT ' + CAST(@LockTimeout * 1000 AS nvarchar) + '; '
          IF (@Version >= 10.504000 AND @Version < 11) OR @Version >= 11.03000
          BEGIN
            SET @CurrentCommand10 = @CurrentCommand10 + 'USE ' + QUOTENAME(@CurrentDatabaseName) + '; IF EXISTS(SELECT * FROM sys.dm_db_stats_properties (@ParamObjectID, @ParamStatisticsID) WHERE modification_counter > 0) BEGIN SET @ParamStatisticsModified = 1 END'
          END
          ELSE
          BEGIN
            SET @CurrentCommand10 = @CurrentCommand10 + 'IF EXISTS(SELECT * FROM ' + QUOTENAME(@CurrentDatabaseName) + '.sys.sysindexes sysindexes WHERE sysindexes.[id] = @ParamObjectID AND sysindexes.[indid] = @ParamStatisticsID AND sysindexes.[rowmodctr] <> 0) BEGIN SET @ParamStatisticsModified = 1 END'
          END

          EXECUTE sp_executesql @statement = @CurrentCommand10, @params = N'@ParamObjectID int, @ParamStatisticsID int, @ParamStatisticsModified bit OUTPUT', @ParamObjectID = @CurrentObjectID, @ParamStatisticsID = @CurrentStatisticsID, @ParamStatisticsModified = @CurrentStatisticsModified OUTPUT
          SET @Error = @@ERROR
          IF @Error = 0 AND @CurrentStatisticsModified IS NULL SET @CurrentStatisticsModified = 0
          IF @Error = 1222
          BEGIN
            SET @ErrorMessage = 'The statistics ' + QUOTENAME(@CurrentStatisticsName) + ' on the object ' + QUOTENAME(@CurrentDatabaseName) + '.' + QUOTENAME(@CurrentSchemaName) + '.' + QUOTENAME(@CurrentObjectName) + ' is locked. It could not be checked if any rows has been modified since the most recent statistics update.' + CHAR(13) + CHAR(10) + ' '
            SET @ErrorMessage = REPLACE(@ErrorMessage,'%','%%')
            RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
          END
          IF @Error <> 0
          BEGIN
            SET @ReturnCode = @Error
            GOTO NoAction
          END
        END

        -- Is the index on a read-only filegroup?
        IF @CurrentIndexID IS NOT NULL AND EXISTS(SELECT * FROM @ActionsPreferred)
        BEGIN
          SET @CurrentCommand11 = ''
          IF @LockTimeout IS NOT NULL SET @CurrentCommand11 = 'SET LOCK_TIMEOUT ' + CAST(@LockTimeout * 1000 AS nvarchar) + '; '
          SET @CurrentCommand11 = @CurrentCommand11 + 'IF EXISTS(SELECT * FROM (SELECT filegroups.data_space_id FROM ' + QUOTENAME(@CurrentDatabaseName) + '.sys.indexes indexes INNER JOIN ' + QUOTENAME(@CurrentDatabaseName) + '.sys.destination_data_spaces destination_data_spaces ON indexes.data_space_id = destination_data_spaces.partition_scheme_id INNER JOIN ' + QUOTENAME(@CurrentDatabaseName) + '.sys.filegroups filegroups ON destination_data_spaces.data_space_id = filegroups.data_space_id WHERE filegroups.is_read_only = 1 AND indexes.[object_id] = @ParamObjectID AND indexes.[index_id] = @ParamIndexID'
          IF @CurrentIsPartition = 1 SET @CurrentCommand11 = @CurrentCommand11 + ' AND destination_data_spaces.destination_id = @ParamPartitionNumber'
          SET @CurrentCommand11 = @CurrentCommand11 + ' UNION SELECT filegroups.data_space_id FROM ' + QUOTENAME(@CurrentDatabaseName) + '.sys.indexes indexes INNER JOIN ' + QUOTENAME(@CurrentDatabaseName) + '.sys.filegroups filegroups ON indexes.data_space_id = filegroups.data_space_id WHERE filegroups.is_read_only = 1 AND indexes.[object_id] = @ParamObjectID AND indexes.[index_id] = @ParamIndexID'
          IF @CurrentIndexType = 1 SET @CurrentCommand11 = @CurrentCommand11 + ' UNION SELECT filegroups.data_space_id FROM ' + QUOTENAME(@CurrentDatabaseName) + '.sys.tables tables INNER JOIN ' + QUOTENAME(@CurrentDatabaseName) + '.sys.filegroups filegroups ON tables.lob_data_space_id = filegroups.data_space_id WHERE filegroups.is_read_only = 1 AND tables.[object_id] = @ParamObjectID'
          SET @CurrentCommand11 = @CurrentCommand11 + ') ReadOnlyFileGroups) BEGIN SET @ParamOnReadOnlyFileGroup = 1 END'

          EXECUTE sp_executesql @statement = @CurrentCommand11, @params = N'@ParamObjectID int, @ParamIndexID int, @ParamPartitionNumber int, @ParamOnReadOnlyFileGroup bit OUTPUT', @ParamObjectID = @CurrentObjectID, @ParamIndexID = @CurrentIndexID, @ParamPartitionNumber = @CurrentPartitionNumber, @ParamOnReadOnlyFileGroup = @CurrentOnReadOnlyFileGroup OUTPUT
          SET @Error = @@ERROR
          IF @Error = 0 AND @CurrentOnReadOnlyFileGroup IS NULL SET @CurrentOnReadOnlyFileGroup = 0
          IF @Error = 1222
          BEGIN
            SET @ErrorMessage = 'The index ' + QUOTENAME(@CurrentIndexName) + ' on the object ' + QUOTENAME(@CurrentDatabaseName) + '.' + QUOTENAME(@CurrentSchemaName) + '.' + QUOTENAME(@CurrentObjectName) + ' is locked. It could not be checked if the index is on a read-only filegroup.' + CHAR(13) + CHAR(10) + ' '
            SET @ErrorMessage = REPLACE(@ErrorMessage,'%','%%')
            RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
          END
          IF @Error <> 0
          BEGIN
            SET @ReturnCode = @Error
            GOTO NoAction
          END
        END

        -- Is the index fragmented?
        IF @CurrentIndexID IS NOT NULL
        AND @CurrentOnReadOnlyFileGroup = 0
        AND EXISTS(SELECT * FROM @ActionsPreferred)
        AND (EXISTS(SELECT [Priority], [Action], COUNT(*) FROM @ActionsPreferred GROUP BY [Priority], [Action] HAVING COUNT(*) <> 3) OR @PageCountLevel > 0)
        BEGIN
          SET @CurrentCommand12 = ''
          IF @LockTimeout IS NOT NULL SET @CurrentCommand12 = 'SET LOCK_TIMEOUT ' + CAST(@LockTimeout * 1000 AS nvarchar) + '; '
          SET @CurrentCommand12 = @CurrentCommand12 + 'SELECT @ParamFragmentationLevel = MAX(avg_fragmentation_in_percent), @ParamPageCount = SUM(page_count) FROM sys.dm_db_index_physical_stats(@ParamDatabaseID, @ParamObjectID, @ParamIndexID, @ParamPartitionNumber, ''LIMITED'') WHERE alloc_unit_type_desc = ''IN_ROW_DATA'' AND index_level = 0'

          EXECUTE sp_executesql @statement = @CurrentCommand12, @params = N'@ParamDatabaseID int, @ParamObjectID int, @ParamIndexID int, @ParamPartitionNumber int, @ParamFragmentationLevel float OUTPUT, @ParamPageCount bigint OUTPUT', @ParamDatabaseID = @CurrentDatabaseID, @ParamObjectID = @CurrentObjectID, @ParamIndexID = @CurrentIndexID, @ParamPartitionNumber = @CurrentPartitionNumber, @ParamFragmentationLevel = @CurrentFragmentationLevel OUTPUT, @ParamPageCount = @CurrentPageCount OUTPUT
          SET @Error = @@ERROR
          IF @Error = 1222
          BEGIN
            SET @ErrorMessage = 'The index ' + QUOTENAME(@CurrentIndexName) + ' on the object ' + QUOTENAME(@CurrentDatabaseName) + '.' + QUOTENAME(@CurrentSchemaName) + '.' + QUOTENAME(@CurrentObjectName) + ' is locked. The size and fragmentation of the index could not be checked.' + CHAR(13) + CHAR(10) + ' '
            SET @ErrorMessage = REPLACE(@ErrorMessage,'%','%%')
            RAISERROR(@ErrorMessage,16,1) WITH NOWAIT
          END
          IF @Error <> 0
          BEGIN
            SET @ReturnCode = @Error
            GOTO NoAction
          END
        END

        -- Select fragmentation group
        IF @CurrentIndexID IS NOT NULL AND @CurrentOnReadOnlyFileGroup = 0 AND EXISTS(SELECT * FROM @ActionsPreferred)
        BEGIN
          SET @CurrentFragmentationGroup = CASE
          WHEN @CurrentFragmentationLevel >= @FragmentationLevel2 THEN 'High'
          WHEN @CurrentFragmentationLevel >= @FragmentationLevel1 AND @CurrentFragmentationLevel < @FragmentationLevel2 THEN 'Medium'
          WHEN @CurrentFragmentationLevel < @FragmentationLevel1 THEN 'Low'
          END
        END

        -- Which actions are allowed?
        IF @CurrentIndexID IS NOT NULL AND EXISTS(SELECT * FROM @ActionsPreferred)
        BEGIN
          IF @CurrentOnReadOnlyFileGroup = 0 AND @CurrentIndexType IN (1,2,3,4,5) AND (@CurrentIsMemoryOptimized = 0 OR @CurrentIsMemoryOptimized IS NULL) AND (@CurrentAllowPageLocks = 1 OR @CurrentIndexType = 5)
          BEGIN
            INSERT INTO @CurrentActionsAllowed ([Action])
            VALUES ('INDEX_REORGANIZE')
          END
          IF @CurrentOnReadOnlyFileGroup = 0 AND @CurrentIndexType IN (1,2,3,4,5) AND (@CurrentIsMemoryOptimized = 0 OR @CurrentIsMemoryOptimized IS NULL)
          BEGIN
            INSERT INTO @CurrentActionsAllowed ([Action])
            VALUES ('INDEX_REBUILD_OFFLINE')
          END
          IF @CurrentOnReadOnlyFileGroup = 0
          AND (@CurrentIsMemoryOptimized = 0 OR @CurrentIsMemoryOptimized IS NULL)
          AND (@CurrentIsPartition = 0 OR @Version >= 12)
          AND ((@CurrentIndexType = 1 AND @CurrentIsImageText = 0 AND @CurrentIsNewLOB = 0)
          OR (@CurrentIndexType = 2 AND @CurrentIsNewLOB = 0)
          OR (@CurrentIndexType = 1 AND @CurrentIsImageText = 0 AND @CurrentIsFileStream = 0 AND @Version >= 11)
          OR (@CurrentIndexType = 2 AND @Version >= 11))
          AND (@CurrentIsColumnStore = 0 OR @Version < 11)
          AND SERVERPROPERTY('EngineEdition') IN (3,5)
          BEGIN
            INSERT INTO @CurrentActionsAllowed ([Action])
            VALUES ('INDEX_REBUILD_ONLINE')
          END
        END

        -- Decide action
        IF @CurrentIndexID IS NOT NULL
        AND EXISTS(SELECT * FROM @ActionsPreferred)
        AND (@CurrentPageCount >= @PageCountLevel OR @PageCountLevel = 0)
        BEGIN
          IF EXISTS(SELECT [Priority], [Action], COUNT(*) FROM @ActionsPreferred GROUP BY [Priority], [Action] HAVING COUNT(*) <> 3)
          BEGIN
            SELECT @CurrentAction = [Action]
            FROM @ActionsPreferred
            WHERE FragmentationGroup = @CurrentFragmentationGroup
            AND [Priority] = (SELECT MIN([Priority])
                              FROM @ActionsPreferred
                              WHERE FragmentationGroup = @CurrentFragmentationGroup
                              AND [Action] IN (SELECT [Action] FROM @CurrentActionsAllowed))
          END
          ELSE
          BEGIN
            SELECT @CurrentAction = [Action]
            FROM @ActionsPreferred
            WHERE [Priority] = (SELECT MIN([Priority])
                                FROM @ActionsPreferred
                                WHERE [Action] IN (SELECT [Action] FROM @CurrentActionsAllowed))
          END
        END

        -- Workaround for limitation in SQL Server, http://support.microsoft.com/kb/2292737
        IF @CurrentIndexID IS NOT NULL
        BEGIN
          SET @CurrentMaxDOP = @MaxDOP
          IF @CurrentAction = 'INDEX_REBUILD_ONLINE' AND @CurrentAllowPageLocks = 0
          BEGIN
            SET @CurrentMaxDOP = 1
          END
        END

        -- Update statistics?
        IF @CurrentStatisticsID IS NOT NULL
        AND ((@UpdateStatistics = 'ALL' AND (@CurrentIndexType IN (1,2,3,4,7) OR @CurrentIndexID IS NULL)) OR (@UpdateStatistics = 'INDEX' AND @CurrentIndexID IS NOT NULL AND @CurrentIndexType IN (1,2,3,4,7)) OR (@UpdateStatistics = 'COLUMNS' AND @CurrentIndexID IS NULL))
        AND (@CurrentStatisticsModified = 1 OR @OnlyModifiedStatistics = 'N' OR @CurrentIsMemoryOptimized = 1)
        AND ((@CurrentIsPartition = 0 AND (@CurrentAction NOT IN('INDEX_REBUILD_ONLINE','INDEX_REBUILD_OFFLINE') OR @CurrentAction IS NULL)) OR (@CurrentIsPartition = 1 AND @CurrentPartitionNumber = @CurrentPartitionCount))
        BEGIN
          SET @CurrentUpdateStatistics = 'Y'
        END
        ELSE
        BEGIN
          SET @CurrentUpdateStatistics = 'N'
        END

        SET @CurrentStatisticsSample = @StatisticsSample
        SET @CurrentStatisticsResample = @StatisticsResample

        -- Memory-optimized tables only supports FULLSCAN and RESAMPLE in SQL Server 2014
        IF @CurrentIsMemoryOptimized = 1 AND @Version >= 12 AND @Version < 13 AND (@CurrentStatisticsSample <> 100 OR @CurrentStatisticsSample IS NULL)
        BEGIN
          SET @CurrentStatisticsSample = NULL
          SET @CurrentStatisticsResample = 'Y'
        END

        -- Create comment
        IF @CurrentIndexID IS NOT NULL
        BEGIN
          SET @CurrentComment = 'ObjectType: ' + CASE WHEN @CurrentObjectType = 'U' THEN 'Table' WHEN @CurrentObjectType = 'V' THEN 'View' ELSE 'N/A' END + ', '
          SET @CurrentComment = @CurrentComment + 'IndexType: ' + CASE WHEN @CurrentIndexType = 1 THEN 'Clustered' WHEN @CurrentIndexType = 2 THEN 'NonClustered' WHEN @CurrentIndexType = 3 THEN 'XML' WHEN @CurrentIndexType = 4 THEN 'Spatial' WHEN @CurrentIndexType = 5 THEN 'Clustered Columnstore' WHEN @CurrentIndexType = 6 THEN 'NonClustered Columnstore' WHEN @CurrentIndexType = 7 THEN 'NonClustered Hash' ELSE 'N/A' END + ', '
          SET @CurrentComment = @CurrentComment + 'ImageText: ' + CASE WHEN @CurrentIsImageText = 1 THEN 'Yes' WHEN @CurrentIsImageText = 0 THEN 'No' ELSE 'N/A' END + ', '
          SET @CurrentComment = @CurrentComment + 'NewLOB: ' + CASE WHEN @CurrentIsNewLOB = 1 THEN 'Yes' WHEN @CurrentIsNewLOB = 0 THEN 'No' ELSE 'N/A' END + ', '
          SET @CurrentComment = @CurrentComment + 'FileStream: ' + CASE WHEN @CurrentIsFileStream = 1 THEN 'Yes' WHEN @CurrentIsFileStream = 0 THEN 'No' ELSE 'N/A' END + ', '
          IF @Version >= 11 SET @CurrentComment = @CurrentComment + 'ColumnStore: ' + CASE WHEN @CurrentIsColumnStore = 1 THEN 'Yes' WHEN @CurrentIsColumnStore = 0 THEN 'No' ELSE 'N/A' END + ', '
          SET @CurrentComment = @CurrentComment + 'AllowPageLocks: ' + CASE WHEN @CurrentAllowPageLocks = 1 THEN 'Yes' WHEN @CurrentAllowPageLocks = 0 THEN 'No' ELSE 'N/A' END + ', '
          SET @CurrentComment = @CurrentComment + 'PageCount: ' + ISNULL(CAST(@CurrentPageCount AS nvarchar),'N/A') + ', '
          SET @CurrentComment = @CurrentComment + 'Fragmentation: ' + ISNULL(CAST(@CurrentFragmentationLevel AS nvarchar),'N/A')
        END

        IF @CurrentIndexID IS NOT NULL AND (@CurrentPageCount IS NOT NULL OR @CurrentFragmentationLevel IS NOT NULL)
        BEGIN
        SET @CurrentExtendedInfo = (SELECT *
                                    FROM (SELECT CAST(@CurrentPageCount AS nvarchar) AS [PageCount],
                                                 CAST(@CurrentFragmentationLevel AS nvarchar) AS Fragmentation
                                    ) ExtendedInfo FOR XML AUTO, ELEMENTS)
        END

        IF @CurrentIndexID IS NOT NULL AND @CurrentAction IS NOT NULL AND (GETDATE() < DATEADD(ss,@TimeLimit,@StartTime) OR @TimeLimit IS NULL)
        BEGIN
          SET @CurrentCommandType13 = 'ALTER_INDEX'

          SET @CurrentCommand13 = ''
          IF @LockTimeout IS NOT NULL SET @CurrentCommand13 = 'SET LOCK_TIMEOUT ' + CAST(@LockTimeout * 1000 AS nvarchar) + '; '
          SET @CurrentCommand13 = @CurrentCommand13 + 'ALTER INDEX ' + QUOTENAME(@CurrentIndexName) + ' ON ' + QUOTENAME(@CurrentDatabaseName) + '.' + QUOTENAME(@CurrentSchemaName) + '.' + QUOTENAME(@CurrentObjectName)

          IF @CurrentAction IN('INDEX_REBUILD_ONLINE','INDEX_REBUILD_OFFLINE')
          BEGIN
            SET @CurrentCommand13 = @CurrentCommand13 + ' REBUILD'
            IF @CurrentIsPartition = 1 SET @CurrentCommand13 = @CurrentCommand13 + ' PARTITION = ' + CAST(@CurrentPartitionNumber AS nvarchar)
            SET @CurrentCommand13 = @CurrentCommand13 + ' WITH ('
            IF @SortInTempdb = 'Y' AND @CurrentIndexType IN(1,2,3,4) SET @CurrentCommand13 = @CurrentCommand13 + 'SORT_IN_TEMPDB = ON'
            IF @SortInTempdb = 'N' AND @CurrentIndexType IN(1,2,3,4) SET @CurrentCommand13 = @CurrentCommand13 + 'SORT_IN_TEMPDB = OFF'
            IF @CurrentIndexType IN(1,2,3,4) AND (@CurrentIsPartition = 0 OR @Version >= 12) SET @CurrentCommand13 = @CurrentCommand13 + ', '
            IF @CurrentAction = 'INDEX_REBUILD_ONLINE' AND (@CurrentIsPartition = 0 OR @Version >= 12) SET @CurrentCommand13 = @CurrentCommand13 + 'ONLINE = ON'
            IF @CurrentAction = 'INDEX_REBUILD_ONLINE' AND @WaitAtLowPriorityMaxDuration IS NOT NULL SET @CurrentCommand13 = @CurrentCommand13 + ' (WAIT_AT_LOW_PRIORITY (MAX_DURATION = ' + CAST(@WaitAtLowPriorityMaxDuration AS nvarchar) + ', ABORT_AFTER_WAIT = ' + UPPER(@WaitAtLowPriorityAbortAfterWait) + '))'
            IF @CurrentAction = 'INDEX_REBUILD_OFFLINE' AND (@CurrentIsPartition = 0 OR @Version >= 12) SET @CurrentCommand13 = @CurrentCommand13 + 'ONLINE = OFF'
            IF @CurrentMaxDOP IS NOT NULL SET @CurrentCommand13 = @CurrentCommand13 + ', MAXDOP = ' + CAST(@CurrentMaxDOP AS nvarchar)
            IF @FillFactor IS NOT NULL AND @CurrentIsPartition = 0 AND @CurrentIndexType IN(1,2,3,4) SET @CurrentCommand13 = @CurrentCommand13 + ', FILLFACTOR = ' + CAST(@FillFactor AS nvarchar)
            IF @PadIndex = 'Y' AND @CurrentIsPartition = 0 AND @CurrentIndexType IN(1,2,3,4) SET @CurrentCommand13 = @CurrentCommand13 + ', PAD_INDEX = ON'
            IF @PadIndex = 'N' AND @CurrentIsPartition = 0 AND @CurrentIndexType IN(1,2,3,4) SET @CurrentCommand13 = @CurrentCommand13 + ', PAD_INDEX = OFF'
            SET @CurrentCommand13 = @CurrentCommand13 + ')'
          END

          IF @CurrentAction IN('INDEX_REORGANIZE')
          BEGIN
            SET @CurrentCommand13 = @CurrentCommand13 + ' REORGANIZE'
            IF @CurrentIsPartition = 1 SET @CurrentCommand13 = @CurrentCommand13 + ' PARTITION = ' + CAST(@CurrentPartitionNumber AS nvarchar)
            SET @CurrentCommand13 = @CurrentCommand13 + ' WITH ('
            IF @LOBCompaction = 'Y' SET @CurrentCommand13 = @CurrentCommand13 + 'LOB_COMPACTION = ON'
            IF @LOBCompaction = 'N' SET @CurrentCommand13 = @CurrentCommand13 + 'LOB_COMPACTION = OFF'
            SET @CurrentCommand13 = @CurrentCommand13 + ')'
          END

          EXECUTE @CurrentCommandOutput13 = [dbo].[CommandExecute] @Command = @CurrentCommand13, @CommandType = @CurrentCommandType13, @Mode = 2, @Comment = @CurrentComment, @DatabaseName = @CurrentDatabaseName, @SchemaName = @CurrentSchemaName, @ObjectName = @CurrentObjectName, @ObjectType = @CurrentObjectType, @IndexName = @CurrentIndexName, @IndexType = @CurrentIndexType, @PartitionNumber = @CurrentPartitionNumber, @ExtendedInfo = @CurrentExtendedInfo, @LogToTable = @LogToTable, @Execute = @Execute
          SET @Error = @@ERROR
          IF @Error <> 0 SET @CurrentCommandOutput13 = @Error
          IF @CurrentCommandOutput13 <> 0 SET @ReturnCode = @CurrentCommandOutput13

          IF @Delay > 0
          BEGIN
            SET @CurrentDelay = DATEADD(ss,@Delay,'1900-01-01')
            WAITFOR DELAY @CurrentDelay
          END
        END

        IF @CurrentStatisticsID IS NOT NULL AND @CurrentUpdateStatistics = 'Y' AND (GETDATE() < DATEADD(ss,@TimeLimit,@StartTime) OR @TimeLimit IS NULL)
        BEGIN
          SET @CurrentCommandType14 = 'UPDATE_STATISTICS'

          SET @CurrentCommand14 = ''
          IF @LockTimeout IS NOT NULL SET @CurrentCommand14 = 'SET LOCK_TIMEOUT ' + CAST(@LockTimeout * 1000 AS nvarchar) + '; '
          SET @CurrentCommand14 = @CurrentCommand14 + 'UPDATE STATISTICS ' + QUOTENAME(@CurrentDatabaseName) + '.' + QUOTENAME(@CurrentSchemaName) + '.' + QUOTENAME(@CurrentObjectName) + ' ' + QUOTENAME(@CurrentStatisticsName)
          IF @CurrentStatisticsSample IS NOT NULL OR @CurrentStatisticsResample = 'Y' OR @CurrentNoRecompute = 1 SET @CurrentCommand14 = @CurrentCommand14 + ' WITH'
          IF @CurrentStatisticsSample = 100 SET @CurrentCommand14 = @CurrentCommand14 + ' FULLSCAN'
          IF @CurrentStatisticsSample IS NOT NULL AND @CurrentStatisticsSample <> 100 SET @CurrentCommand14 = @CurrentCommand14 + ' SAMPLE ' + CAST(@CurrentStatisticsSample AS nvarchar) + ' PERCENT'
          IF @CurrentStatisticsResample = 'Y' SET @CurrentCommand14 = @CurrentCommand14 + ' RESAMPLE'
          IF (@CurrentStatisticsSample IS NOT NULL OR @CurrentStatisticsResample = 'Y') AND @CurrentNoRecompute = 1 SET @CurrentCommand14 = @CurrentCommand14 + ','
          IF @CurrentNoRecompute = 1 SET @CurrentCommand14 = @CurrentCommand14 + ' NORECOMPUTE'

          EXECUTE @CurrentCommandOutput14 = [dbo].[CommandExecute] @Command = @CurrentCommand14, @CommandType = @CurrentCommandType14, @Mode = 2, @DatabaseName = @CurrentDatabaseName, @SchemaName = @CurrentSchemaName, @ObjectName = @CurrentObjectName, @ObjectType = @CurrentObjectType, @IndexName = @CurrentIndexName, @IndexType = @CurrentIndexType, @StatisticsName = @CurrentStatisticsName, @LogToTable = @LogToTable, @Execute = @Execute
          SET @Error = @@ERROR
          IF @Error <> 0 SET @CurrentCommandOutput14 = @Error
          IF @CurrentCommandOutput14 <> 0 SET @ReturnCode = @CurrentCommandOutput14
        END

        NoAction:

        -- Update that the index is completed
        UPDATE @tmpIndexesStatistics
        SET Completed = 1
        WHERE Selected = 1
        AND Completed = 0
        AND ID = @CurrentIxID

        -- Clear variables
        SET @CurrentCommand02 = NULL
        SET @CurrentCommand03 = NULL
        SET @CurrentCommand04 = NULL
        SET @CurrentCommand05 = NULL
        SET @CurrentCommand06 = NULL
        SET @CurrentCommand07 = NULL
        SET @CurrentCommand08 = NULL
        SET @CurrentCommand09 = NULL
        SET @CurrentCommand10 = NULL
        SET @CurrentCommand11 = NULL
        SET @CurrentCommand12 = NULL
        SET @CurrentCommand13 = NULL
        SET @CurrentCommand14 = NULL

        SET @CurrentCommandOutput13 = NULL
        SET @CurrentCommandOutput14 = NULL

        SET @CurrentCommandType13 = NULL
        SET @CurrentCommandType14 = NULL

        SET @CurrentIxID = NULL
        SET @CurrentSchemaID = NULL
        SET @CurrentSchemaName = NULL
        SET @CurrentObjectID = NULL
        SET @CurrentObjectName = NULL
        SET @CurrentObjectType = NULL
        SET @CurrentIsMemoryOptimized = NULL
        SET @CurrentIndexID = NULL
        SET @CurrentIndexName = NULL
        SET @CurrentIndexType = NULL
        SET @CurrentStatisticsID = NULL
        SET @CurrentStatisticsName = NULL
        SET @CurrentPartitionID = NULL
        SET @CurrentPartitionNumber = NULL
        SET @CurrentPartitionCount = NULL
        SET @CurrentIsPartition = NULL
        SET @CurrentIndexExists = NULL
        SET @CurrentStatisticsExists = NULL
        SET @CurrentIsImageText = NULL
        SET @CurrentIsNewLOB = NULL
        SET @CurrentIsFileStream = NULL
        SET @CurrentIsColumnStore = NULL
        SET @CurrentAllowPageLocks = NULL
        SET @CurrentNoRecompute = NULL
        SET @CurrentStatisticsModified = NULL
        SET @CurrentOnReadOnlyFileGroup = NULL
        SET @CurrentFragmentationLevel = NULL
        SET @CurrentPageCount = NULL
        SET @CurrentFragmentationGroup = NULL
        SET @CurrentAction = NULL
        SET @CurrentMaxDOP = NULL
        SET @CurrentUpdateStatistics = NULL
        SET @CurrentStatisticsSample = NULL
        SET @CurrentStatisticsResample = NULL
        SET @CurrentComment = NULL
        SET @CurrentExtendedInfo = NULL

        DELETE FROM @CurrentActionsAllowed

      END

    END

    -- Update that the database is completed
    UPDATE @tmpDatabases
    SET Completed = 1
    WHERE Selected = 1
    AND Completed = 0
    AND ID = @CurrentDBID

    -- Clear variables
    SET @CurrentDBID = NULL
    SET @CurrentDatabaseID = NULL
    SET @CurrentDatabaseName = NULL
    SET @CurrentIsDatabaseAccessible = NULL
    SET @CurrentAvailabilityGroup = NULL
    SET @CurrentAvailabilityGroupRole = NULL
    SET @CurrentDatabaseMirroringRole = NULL
    SET @CurrentIsReadOnly = NULL

    SET @CurrentCommand01 = NULL

    DELETE FROM @tmpIndexesStatistics

  END

  ----------------------------------------------------------------------------------------------------
  --// Log completing information                                                                 //--
  ----------------------------------------------------------------------------------------------------

  Logging:
  SET @EndMessage = 'Date and time: ' + CONVERT(nvarchar,GETDATE(),120)
  SET @EndMessage = REPLACE(@EndMessage,'%','%%')
  RAISERROR(@EndMessage,10,1) WITH NOWAIT

  IF @ReturnCode <> 0
  BEGIN
    RETURN @ReturnCode
  END

  ----------------------------------------------------------------------------------------------------

END

GO