方法一:
1.建表
if OBJECT_ID('test') is not null drop table test go create table test (id int identity(1,1),vid int ,v varchar(600), constraint pk_test_id primary key (id)) go
2.第一次插入數據
insert into test(vid,v) select 1,REPLICATE('a',600) union all select 2,REPLICATE('b',600) union all select 3,REPLICATE('c',600) union all select 4,REPLICATE('d',600) union all select 5,REPLICATE('e',600) union all select 6,REPLICATE('f',600) union all select 7,REPLICATE('g',600) union all select 8,REPLICATE('h',600) union all select 9,REPLICATE('i',600) union all select 10,REPLICATE('j',600) go
3.第二次插入數據
begin tran insert into test(vid,v) select vid,v from test commit tran go 18
方法二:
1.建表
學生表: CREATE TABLE [dbo].[Student]( [StudentID] [int] IDENTITY(1,1) NOT NULL, --主鍵 [Number] [varchar](15) NULL, --學號 [Name] [nchar](8) NULL, --學生姓名 [ClassID] [int] NOT NULL --學生所在班級ID )
2.插入數據
插入學生數據: declare @count int =1; while @count < 100 begin insert into Student select @count,'學生'+ convert(varchar,@count,15),cast(ceiling(rand() * 5) as int) set @count = @count + 1; end