Install-DbaMaintenanceSolution - don't drop tables if not readding

[jpomfret]

Type of Change

• Bug fix (non-breaking change, fixes Install-DbaMaintenanceSolution drops existing table CommandLog when using switch parameter -ReplaceExisting and doesn't create a replacement #9553
• New feature (non-breaking change, adds functionality, fixes # )
• Breaking change (affects multiple commands or functionality, fixes # )
• Ran manual Pester test and has passed (Invoke-ManualPester)
• Adding code coverage to existing functionality
• Pester test is included
• If new file reference added for test, has is been added to github.com/dataplat/appveyor-lab ?
• Unit test is included
• Documentation
• Build system

Purpose

Reported in #9553 the CommandLog table is always dropped when ReplaceExisting is specified - this is causing issues if the SPs are calling the LogToTable parameter.

Approach

This change provides more control - the tables will only be dropped if the switches that use them are specified. This way if you want to keep the history in the CommandLog table but update the SPs you can.

I implemented the same logic for the InstallParallel parameter - and the Queue* tables - if the parameter is specified they will be dropped, if not they will remain on the server.

Commands to test

This will drop and replace all the SPs but none of the tables.

$paramHash = @{
  SqlInstance      = $svr
   Database        = 'Maint'
   SqlCredential   = $someCred
   Verbose         = $True
   ReplaceExisting = $True
}
Install-DbaMaintenanceSolution @paramHash

This will drop and replace the SPs and the CommandLog table

$paramHash = @{
  SqlInstance      = $svr
   Database        = 'Maint'
   SqlCredential   = $someCred
   Verbose         = $True
   ReplaceExisting = $True
   LogToTable = $True
}
Install-DbaMaintenanceSolution @paramHash

This will drop and create SPs and all tables.

$paramHash = @{
  SqlInstance      = $svr
   Database        = 'Maint'
   SqlCredential   = $someCred
   Verbose         = $True
   ReplaceExisting = $True
   LogToTable = $True
   InstallParallel = $True
}
Install-DbaMaintenanceSolution @paramHash

[potatoqualitee]

Merci 🙏🏼

[potatoqualitee]

bon 🤩