Insert identity dynamically by using insert into

Question

Insert identity dynamically by using insert into

karunakar2351

Right there with Babe

Points: 729
More actions
August 6, 2013 at 7:18 am

#275948

Code:
SELECT
IDENTITY(INT,1,1) AS D_Key,
C_Key,
D_Num,
D_Name,
D_Address
INTO D_Table2
FROM D_Table1
I need to populate a table based on results from a query. If I do:
INSERT INTO table2
SELECT
IDENTITY(INT,1,1) AS D_Key,
C_Key,
D_Num,
D_Name,
D_Address
FROM D_Table1
It gives me the error: The IDENTITY function can only be used when the SELECT statement has an INTO clause?

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Sean Lange SSC Guru Points: 286590 More actions · Answer 1

karunakar2351 (8/6/2013)
Code:
SELECT
IDENTITY(INT,1,1) AS D_Key,
C_Key,
D_Num,
D_Name,
D_Address
INTO D_Table2
FROM D_Table1
I need to populate a table based on results from a query. If I do:
INSERT INTO table2
SELECT
IDENTITY(INT,1,1) AS D_Key,
C_Key,
D_Num,
D_Name,
D_Address
FROM D_Table1
It gives me the error: The IDENTITY function can only be used when the SELECT statement has an INTO clause?

The error message pretty much says it all. You can't do that in a select statement. Maybe you can use ROW_NUMBER?

INSERT INTO table2

SELECT

ROW_NUMBER() over (order by (select null)),

C_Key,

D_Num,

D_Name,

D_Address

FROM D_Table1

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Koen Verbeeck SSC Guru Points: 259105 More actions · Answer 2

Or you can define the IDENTITY property on the D_Key field and then insert the data.

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Eric M Russell SSC Guru Points: 125561 More actions · Answer 3

Perhaps the table column you're inserting into needs an identity property. If you must define number externally, then use row_number() or insert into temp table containing identity column, and then insert table from temp table.

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