Question

I am trying to copy multiple records using one query using insert select from.

Insert into tab_A(colId, col1, col2, col3)
Select colId, col1, col2, col3  form tab_A
Where colId in ( 2,4,6)

Would it be possible to assign different colId for new entries? For example colid 2 should be replaced with 23, 4 with 24 and 6 with 25. How could I achieve it in a single query?

Answer 1

this would work

Insert into tab_A(colId, col1, col2, col3)
Select 23 , col1, col2, col3  form tab_A Where colId = 2 UNION ALL
Select 24 , col1, col2, col3  form tab_A Where colId = 4 UNION ALL
Select 25 , col1, col2, col3  form tab_A Where colId = 6 

If you give some more info I could provide somthing more reusable. Should/is colId (be) an identity column?

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EDIT

This would work in this very specialised case

Insert into tab_A(colId, col1, col2, col3)
Select ((colId - 4) * (-1)) + colId + 20 , col1, col2, col3  
    form tab_A Where colId IN (2, 4, 6)

The function newId = ((oldId - 4) * (-1)) + oldId + 20 is obviously specific to the stated problem.

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EDIT2

I suspect somthing like this is more generic approach is appropriate.

DECLARE @MaxColID INT

BEGIN TRANSACTION

SELECT @MaxColID = MAX(ColID) FROM tab_A

INSERT tab_A(colId, col1, col2, col3)
SELECT row + @MaxColID, col1, col2, col3
    FROM
    (
        SELECT ROW_NUMBER() OVER (ORDER BY ColID) row, col1, col2, col3
        FROM tab_A WHERE colID IN (2, 4, 6)
    )

COMMIT

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EDIT 3

If you think EDIT 2 is actually what you want then you really want to make ColID an IDENTITY column, then you could do this.

INSERT tab_A (col1, col2, col3)
SELECT col1, col2, col3  FROM tab_A WHERE colId IN (2, 4, 6)