ssis - Insert a single row and return its primary key

Question

In SSIS, How do I use the execute SQL task to insert a single row with no parameters and get the primary key back so I can set it to user variable? My insert query is simply:

INSERT INTO [AdWords.ImportData] (EndDate) VALUES (null)

Answer 1

Good question, took me a few tries to figure it out. Declare an SSIS variable of type Int32 (unless you need sizing for a bigint or numeric). I chose tablePk as mine.

Option 1

Execute SQL Task

• General tab

ResultSet: None

SQL

INSERT INTO dbo.ImportData (EndDate) VALUES (NULL);
SELECT ? = SCOPE_IDENTITY()

• Parameter Mapping tab

Variable Name: User::tablePk

Direction: Output

Data Type: Long

Parameter Name: 0

Parameter Size: -1

Option 2

This was the original solution as I couldn't grok how to get the placeholder ? in a normal query. It couldn't as simple as what I had above, except it was.

The only difference is the query used

SQL

DECLARE @sql nvarchar(500)
, @paramDef nvarchar(500)

SELECT
    @sql = N'INSERT INTO dbo.ImportData (EndDate) VALUES (NULL);
    SELECT @ident = SCOPE_IDENTITY();'
,   @paramDef = N'@ident int OUTPUT'
EXECUTE sp_executesql @sql, @paramDef, @ident = ? OUTPUT

Option 3

If you're using a data flow, I outline an approach on How to Add the Result Set from a T-SQL Statement to a Data Flow? In short, you need to add a column into the data flow prior to an OLE DB Command. Within the OLE DB Command, you will map that empty column into a OUTPUT parameter from your stored procedure and then as the stored procedure fires, it will replace the column with the value from the procedure.