use mytest drop table t1000 go CREATE TABLE t1000 ( c1 INT IDENTITY(1,1) NOT NULL, c2 VARCHAR(100) NOT NULL ) GO set nocount on DECLARE @rows INT DECLARE @row INT SELECT @rows = 1000 SELECT @row = 0 WHILE @row < @rows BEGIN INSERT INTO t1000 ( c2 ) VALUES ( REPLICATE('a',100) ) SELECT @row = @row + 1 END go drop table t10m_1 go CREATE TABLE t10m_1 ( c1 INT IDENTITY(1,1) NOT NULL, c2 VARCHAR(100) NOT NULL ) GO set nocount on DECLARE @rows INT DECLARE @row INT SELECT @rows = 10000000 SELECT @row = 0 WHILE @row < @rows BEGIN INSERT INTO t10m_1 ( c2 ) VALUES ( REPLICATE('a',100) ) SELECT @row = @row + 1 END go