Nesouhlasím s přijatou odpovědí. To lze snadno otestovat a vyvrátit spuštěním následujícího.
Nastavení
USE tempdb
CREATE TABLE Foo
(
ID int IDENTITY(1,1),
Data nvarchar(max)
)
Připojení 1
USE tempdb
SET NOCOUNT ON
WHILE NOT EXISTS(SELECT * FROM master..sysprocesses WHERE context_info = CAST('stop' AS VARBINARY(128) ))
BEGIN
INSERT INTO Foo (Data)
VALUES ('blah')
END
Připojení 2
USE tempdb
SET NOCOUNT ON
SET CONTEXT_INFO 0x
DECLARE @Output TABLE(ID INT)
WHILE 1 = 1
BEGIN
/*Clear out table variable from previous loop*/
DELETE FROM @Output
/*Insert 1000 records*/
INSERT INTO Foo (Data)
OUTPUT inserted.ID INTO @Output
SELECT TOP 1000 NEWID()
FROM sys.all_columns
IF EXISTS(SELECT * FROM @Output HAVING MAX(ID) - MIN(ID) <> 999 )
BEGIN
/*Set Context Info so other connection inserting
a single record in a loop terminates itself*/
DECLARE @stop VARBINARY(128)
SET @stop = CAST('stop' AS VARBINARY(128))
SET CONTEXT_INFO @stop
/*Return results for inspection*/
SELECT ID, DENSE_RANK() OVER (ORDER BY Grp) AS ContigSection
FROM
(SELECT ID, ID - ROW_NUMBER() OVER (ORDER BY [ID]) AS Grp
FROM @Output) O
ORDER BY ID
RETURN
END
END