Using OUTPUT clause to insert value not in INSERTED

Question

I am writing a stored procedure to process a table belonging to an application and insert values into a table belonging to the same application (so I cannot amend either tab

Answer 1

Use MERGE instead of INSERT:

MERGE
INTO    trn_temp d
USING   (
        SELECT  D.DET_DATE, 'SOMETEXT' AS sometext, SUM(D.DET_NET) AS the_sum
        ...
        ) s
ON      (1 = 0)
WHEN NOT MATCHED THEN
INSERT  (TRN_TRAN_DATE, TRN_DESCRIPTION, TRN_AMT)
VALUES  (det_date, sometext, the_sum)
OUTPUT  s.*

Update:

To work around the GROUP BY problem, use this:

DECLARE @tmp TABLE
        (
        det_primary INT NOT NULL PRIMARY KEY
        )

MERGE
INTO    register r
USING   detail d
ON      (r.det_primary_link = d.det_primary)
WHEN NOT MATCHED THEN
INSERT  (det_primary_link, ins_date)
VALUES  (det_primary, GETDATE())
OUTPUT  d.det_primary
INTO    @tmp;

INSERT
INTO    trn_temp (trn_tran_date, trn_description, trn_amt)
OUTPUT  INSERTED.*
SELECT  det_date, 'sometext', SUM(det_net)
FROM    @tmp t
JOIN    detail d
ON      d.det_primary = t.det_primary
GROUP BY
        det_date

Answer 2

I know this question is nearly a year old, but your insert can work as you have presented it if you select the proper column name from the OUTPUT

The output clause gives us one of two possible virtual tables, inserted or deleted, depending on the operation, an update operation gives both. Since you don't have a field name DET_DATE in your TRN_TEMP table that you just inserted into, it is invalid in the output statement.

INSERT INTO TRN_TEMP (TRN_TRAN_DATE, TRN_DESCRIPTION, TRN_AMT)
OUTPUT INSERTED.TRN_TRAN_DATE, GETDATE() 
INTO REGISTER (DET_PRIMARY_LINK, INS_DATE)
SELECT D.DET_DATE, 'SOMETEXT', SUM(D.DET_NET)
FROM DETAIL D
LEFT JOIN REGISTER R ON D.DET_PRIMARY = R.DET_PRIMARY_LINK
WHERE <MY CONDITIONS> AND R.LINE_ID IS NULL -- TO REMOVE LINES ALREADY PROCESSED
GROUP BY D.DET_DATE