T-SQL MERGE - finding out which action it took
- by IanC
I need to know if a MERGE statement performed an INSERT. In my scenario, the insert is either 0 or 1 rows.
Test code:
DECLARE @t table (C1 int, C2 int)
DECLARE @C1 INT, @C2 INT
set @c1 = 1
set @c2 = 1
MERGE @t as tgt
USING (SELECT @C1, @C2) AS src (C1, C2)
ON (tgt.C1 = src.C1)
WHEN MATCHED AND tgt.C2 != src.C2 THEN
UPDATE SET tgt.C2 = src.C2
WHEN NOT MATCHED BY TARGET THEN
INSERT VALUES (src.C1, src. C2)
OUTPUT deleted.*, $action, inserted.*;
SELECT inserted.*
The last line doesn't compile (no scope, unlike a trigger). I can't get access to @action, or the output. Actually, I don't want any output meta data.
How can I do this?
