Question

Is This Possible?

Here is something I’m looking for, executed together:

First, it would execute the INSERT based on how many rows in the SELECT

  INSERT INTO TABLE2 (xID, NAME)
  SELECT xID, NAME FROM TABLE

Then getting the @@IDENTITY of each INSERTED ROW, it would create a new Insert including the same data of the first SELECT statement:

  INSERT INTO TABLE3 (xID, NAME, ID)
  SELECT xID, NAME, ID as Scope_IdentitY()

If not, what the best way without using cursor or while?

Answer 1

You have, at least, two options:

1) The OUTPUT…INTO target_table clause (SQL2005+)

2) Or you could write composable DML(SQL2008+).

Example:

DECLARE @Table2 TABLE(
    ID  INT IDENTITY PRIMARY KEY, --IDENTITY 
    xID INT NOT NULL,
    NAME VARCHAR(25) NOT NULL
);

DECLARE @Table3 TABLE(
    ID  INT PRIMARY KEY, --No IDENTITY 
    xID INT NOT NULL,
    NAME VARCHAR(25) NOT NULL
);

--First solution: OUTPUT ... INTO
INSERT  INTO @Table2 (xID, NAME)
OUTPUT  inserted.xID, inserted.NAME, inserted.ID INTO @Table3(xID, NAME, ID)
SELECT  t.Col1, t.Col2
FROM    (SELECT 11,'A' UNION ALL SELECT 22,'B' UNION ALL SELECT 33,'C') AS t(Col1,Col2);

--Second solution: composable DML
INSERT  INTO @Table3(xID, NAME, ID)
SELECT  src.xID, src.NAME, src.ID
FROM
(
        INSERT  INTO @Table2 (xID, NAME)
        OUTPUT  inserted.xID, inserted.NAME, inserted.ID 
        SELECT  t.Col1, t.Col2
        FROM    (VALUES(44,'D'),(55,'E'),(66,'F')) AS t(Col1,Col2)
) src

SELECT * FROM @Table2 
SELECT * FROM @Table3