SQL2008中的Sequence

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CREATE
TABLE
dbo.GlobalSequence

(

id
INT
IDENTITY(1, 1)

)

GO

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CREATE
PROC
seq
(
@id INT
OUTPUT
)

AS

BEGIN

BEGIN
TRAN

DECLARE
@NewSequenceValue
TABLE (
ID INT
);

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INSERT
INTO
dbo.GlobalSequence

OUTPUT
inserted.id

INTO
@NewSequenceValue

DEFAULT
VALUES

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ROLLBACK
TRAN

SELECT
@id
=
id

FROM
@NewSequenceValue

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END

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-- test

DECLARE
@id
INT

EXEC
seq
@id OUTPUT

SELECT
@id