Do Inserted Records Always Receive Contiguous Identity Values

Question

Consider the following SQL:

CREATE TABLE Foo
(
    ID int IDENTITY(1,1),
    Data nvarchar(max)
)

INSERT INTO Foo (Data)
SELECT TOP 1000 Data
FROM SomeOther         


        

Answer 1

If you want the Identity values for multiple rows use OUTPUT:

DECLARE @NewIDs table (PKColumn int)
INSERT INTO Foo (Data)
    OUTPUT INSERTED.PKColumn
    INTO @NewIDs
SELECT TOP 1000 Data
FROM SomeOtherTable
WHERE SomeColumn = @SomeParameter

you now have the entire set of values in the @NewIDs table. You can add any columns from the Foo table into the @NewIDs table and insert those columns as well.