SQLServer百万级别随机用户账号批量生成存储过程

数据库名DEMO,表名tb_user

用户表格式如下:

uid	user	pass
101200	SDAD34839SF	SJSM843871GD
101201	...	...
101202	...	...
101203	...	...

uid 为自定义的序号，生成时序号段手工输入。user为用户名，不能重复，所以加入唯一索引，忽略重复值，即插入数据若tb_user表中已存在相同的user值，则忽略该条信息，不插入。

USE [DEMO]
GO
/****** 对象:  Index [PK_user_ignore]    脚本日期: 01/22/2013 18:04:30 ******/
CREATE UNIQUE NONCLUSTERED INDEX [PK_user_ignore] ON [dbo].[tb_user] 
(
	[user] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = ON, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]

再创建随机英文字符函数:

--生成随机编号的函数    
CREATE FUNCTION f_RANDBH(@BHLen int)   
RETURNS varchar(50)   
AS   
BEGIN   
    DECLARE @r varchar(50)   
    IF NOT(ISNULL(@BHLen,0) BETWEEN 1 AND 50)   
        SET @BHLen=10   
   
    SELECT @r=CHAR(65   
            +(SUBSTRING(re,1,1)   
            +SUBSTRING(re,2,1)   
            +SUBSTRING(re,3,1))%26)   
        +CHAR(65   
            +(SUBSTRING(re,4,1)   
            +SUBSTRING(re,5,1)   
            +SUBSTRING(re,6,1))%26)   
    FROM v_RAND   
    WHILE LEN(@r)<@BHLen   
        SELECT @r=@r+CHAR(65   
                +(SUBSTRING(re,1,1)   
                +SUBSTRING(re,2,1)   
                +SUBSTRING(re,3,1))%26)   
            +CHAR(65   
                +(SUBSTRING(re,4,1)   
                +SUBSTRING(re,5,1)   
                +SUBSTRING(re,6,1))%26)   
        FROM v_RAND   
    RETURN(LEFT(@r,@BHLen))   
END

存储过程有两个，一个用于生成user和pass字符串，另一个用于生成自定义uid：

USE [DEMO]
GO
/****** 对象:  StoredProcedure [dbo].[pr_AddUser]    脚本日期: 01/22/2013 17:56:19 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE Procedure [dbo].[pr_AddUser]
(   
    @start_uid int,--UID的启始编号
    @end_uid int,--UID的结束编号
    @row int--总记录数
)
AS
SET NOCOUNT OFF
WHILE @row >0
BEGIN
 RAISERROR('need %d rows', 10, 1, @row) WITH NOWAIT
 SET ROWCOUNT @row
 INSERT INTO tb_user(uid,user,pass) SELECT
 uid = @start_uid,
 user = dbo.f_RANDBH(4)+ RIGHT(100000000 + CONVERT(bigint, ABS(CHECKSUM(NEWID()))), 6)+dbo.f_RANDBH(2),
 pass= dbo.f_RANDBH(4)+ RIGHT(100000000 + CONVERT(bigint, ABS(CHECKSUM(NEWID()))), 6)+dbo.f_RANDBH(2)
 --FROM syscolumns c1, syscolumns c2  -- SET NOCOUNT ON 49 Second
 FROM syscolumns c1, sysobjects o -- SET NOCOUNT ON 47 Second
 SET @row = @row - @@ROWCOUNT  --设置下次循环需要插入的记录数量
 
END

USE [DEMO]
GO
/****** 对象:  StoredProcedure [dbo].[pr_AddUserReUID]    脚本日期: 01/22/2013 18:19:26 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO

CREATE PROCEDURE [dbo].[pr_AddUserReUID]
(   
    @start_uid int, --UID的启始编号
    @end_uid int --UID的结束编号
)
AS
BEGIN
    --复制数据到临时表#temp_user
	select * into #temp_user from tb_user where UID >=@start_uid and UID <=@end_uid

	--删除原表数据
	delete from tb_user where UID >=@start_uid and UID <=@end_uid


	--重新给临时表UID编号
	declare @i int
	set @i=@start_uid-1
	update #temp_user
	set UID=@i,@i=@i+1


	--重新编号的临时表复制到原表
	insert into tb_user select * from #temp_user where UID >=@start_uid and UID <=@end_uid  order by uid asc

	drop table #temp_user
END

自测，生成5W数据不到5秒

生成100W数据用时95秒