diff --git a/Project.toml b/Project.toml
index 4f4cd11..355f8f3 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "DuckDB"
 uuid = "d2f5444f-75bc-4fdf-ac35-56f514c445e1"
 authors = ["Kimmo Linna <kimmo.linna@gmail.com>"]
-version = "0.2.1"
+version = "0.2.2"
 
 [deps]
 DataFrames = "a93c6f00-e57d-5684-b7b6-d8193f3e46c0"
diff --git a/src/DuckDB.jl b/src/DuckDB.jl
index 5797d2d..4979544 100644
--- a/src/DuckDB.jl
+++ b/src/DuckDB.jl
@@ -21,7 +21,7 @@ function toDataFrame(result)
             print("invalid type for column - \""*name*"\"") 
         else
             mask = unsafe_wrap(Array,columns[i].nullmask,rows)
-            data = unsafe_wrap(Array,(Ptr{DUCKDB_TYPES[type]}(columns[i].data)),rows)
+            data = unsafe_wrap(Array,Ptr{DUCKDB_TYPES[type]}(columns[i].data),rows)
             bmask=reinterpret(Bool,mask)
 
             if 0!=sum(mask)
@@ -33,6 +33,8 @@ function toDataFrame(result)
                 data = Dates.Time.(Dates.Nanosecond.(data.*1000))
             elseif type == DUCKDB_TYPE_TIMESTAMP
                 data = Dates.epochms2datetime.((data./1000).+62167219200000)
+            elseif type == DUCKDB_TYPE_INTERVAL
+                data = map(x -> Dates.CompoundPeriod(Dates.Month(x.months),Dates.Day(x.days),Dates.Microsecond(x.micros)),data)
             elseif type == DUCKDB_TYPE_VARCHAR
                 data = unsafe_string.(data)
             end   
diff --git a/src/consts.jl b/src/consts.jl
index 9bc3591..9460ece 100644
--- a/src/consts.jl
+++ b/src/consts.jl
@@ -70,7 +70,7 @@ end
 struct duckdb_interval 
 	months::Int32
 	days::Int32
-	micros::Int32
+	micros::Int64
 end
 
 """
@@ -121,8 +121,8 @@ DUCKDB_TYPES = Dict(
 	DUCKDB_TYPE_TIMESTAMP => Int64,
 	DUCKDB_TYPE_DATE => Int32,
 	DUCKDB_TYPE_TIME => Int64,
-	DUCKDB_TYPE_INTERVAL => Ref{duckdb_interval},
-	DUCKDB_TYPE_HUGEINT => Ref{duckdb_hugeint},
+	DUCKDB_TYPE_INTERVAL => duckdb_interval,
+	DUCKDB_TYPE_HUGEINT => duckdb_hugeint,
 	DUCKDB_TYPE_VARCHAR => Ptr{UInt8},
-	DUCKDB_TYPE_BLOB => Ref{duckdb_blob}
+	DUCKDB_TYPE_BLOB => duckdb_blob
 )
\ No newline at end of file
diff --git a/test/runtests.jl b/test/runtests.jl
index 9f09870..8eb4bb6 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -1,10 +1,28 @@
 import DuckDB
 con = DuckDB.connect(":memory:")
-res = DuckDB.execute(con,"CREATE TABLE integers(date DATE, data INTEGER);")
-res = DuckDB.execute(con,"INSERT INTO integers VALUES ('2021-09-27', 4), ('2021-09-28', 6), ('2021-09-29', 8);")
-res = DuckDB.execute(con,"SELECT * FROM integers;")
+
+res = DuckDB.execute(con,"CREATE TABLE interval(interval INTERVAL);")
+res = DuckDB.execute(con,"""
+INSERT INTO interval VALUES 
+(INTERVAL 5 HOUR),
+(INTERVAL 12 MONTH),
+(INTERVAL 12 MICROSECOND),
+(INTERVAL 1 YEAR);
+""")
+res = DuckDB.execute(con,"SELECT * FROM interval;")
 res = DuckDB.toDataFrame(res)
 
+
+res = DuckDB.execute(con,"CREATE TABLE timestamp(timestamp TIMESTAMP, data HUGEINT);")
+res = DuckDB.execute(con,"""
+    INSERT INTO timestamp VALUES 
+    ('2021-09-27 11:30:00.000', -170141183460469231731687303715884105727),
+    ('2021-09-28 12:30:00.000', 0),
+    ('2021-09-29 13:30:00.000', 170141183460469231731687303715884105727);
+    """)
+res = DuckDB.execute(con,"SELECT * FROM timestamp;")
+res = DuckDB.toDataFrame(res)
+    
 res = DuckDB.execute(con,"CREATE TABLE timestamp(timestamp TIMESTAMP , data INTEGER);")
 res = DuckDB.execute(con,"INSERT INTO timestamp VALUES ('2021-09-27 11:30:00.000', 4), ('2021-09-28 12:30:00.000', 6), ('2021-09-29 13:30:00.000', 8);")
 res = DuckDB.execute(con,"SELECT * FROM timestamp;")
@@ -13,4 +31,11 @@ res = DuckDB.toDataFrame(res)
 res = DuckDB.execute(con, "CREATE TABLE items(item VARCHAR, value DECIMAL(10,2), count INTEGER);")
 res = DuckDB.execute(con, "INSERT INTO items VALUES ('jeans', 20.0, 1), ('hammer', 42.2, 2);")
 res = DuckDB.execute(con, "SELECT * FROM items;")
-res = DuckDB.toDataFrame(res)
\ No newline at end of file
+res = DuckDB.toDataFrame(res)
+
+res = DuckDB.execute(con,"CREATE TABLE integers(date DATE, data INTEGER);")
+res = DuckDB.execute(con,"INSERT INTO integers VALUES ('2021-09-27', 4), ('2021-09-28', 6), ('2021-09-29', 8);")
+res = DuckDB.execute(con,"SELECT * FROM integers;")
+res = DuckDB.toDataFrame(res)
+
+DuckDB.disconnect(con)
\ No newline at end of file