CREATE PROCEDURE rsbh
AS
BEGIN
declare @i int
declare @s nvarchar(4000)
set @s = 'SELECT @i=1 FROM p_people WHERE 人员编号 LIKE SUBSTRING(CONVERT(varchar(8),GETDATE(),112),1,8)+''%''' exec sp_executesql @s,N'@i int out',@i out if @i=1
BEGIN
exec('SELECT CONVERT(numeric(12,0), RIGHT(MAX(人员编号), 12)) + 1 AS 编号 FROM p_people WHERE 人员编号 LIKE SUBSTRING(CONVERT(varchar(8),GETDATE(),112),1,17)+''%''')
END
ELSE
exec('SELECT CONVERT(numeric(12,0),CONVERT(varchar(9),GETDATE(),112)+''0000'',112)+1 AS 编号')
END
GO我想让set @s = 'SELECT @i=1 FROM p_people WHERE 人员编号 LIKE SUBSTRING(CONVERT(varchar(8),GETDATE(),112),1,8)+''%'''中间加入个%实现模糊查询可怎么加都不可以
AS
BEGIN
declare @i int
declare @s nvarchar(4000)
set @s = 'SELECT @i=1 FROM p_people WHERE 人员编号 LIKE SUBSTRING(CONVERT(varchar(8),GETDATE(),112),1,8)+''%''' exec sp_executesql @s,N'@i int out',@i out if @i=1
BEGIN
exec('SELECT CONVERT(numeric(12,0), RIGHT(MAX(人员编号), 12)) + 1 AS 编号 FROM p_people WHERE 人员编号 LIKE SUBSTRING(CONVERT(varchar(8),GETDATE(),112),1,17)+''%''')
END
ELSE
exec('SELECT CONVERT(numeric(12,0),CONVERT(varchar(9),GETDATE(),112)+''0000'',112)+1 AS 编号')
END
GO我想让set @s = 'SELECT @i=1 FROM p_people WHERE 人员编号 LIKE SUBSTRING(CONVERT(varchar(8),GETDATE(),112),1,8)+''%'''中间加入个%实现模糊查询可怎么加都不可以
1 :普通SQL语句可以用Exec执行 eg: Select * from tableName
Exec( 'select * from tableName ')
Exec sp_executesql N 'select * from tableName ' -- 请注意字符串前一定要加N 2:字段名,表名,数据库名之类作为变量时,必须用动态SQL eg:
declare @fname varchar(20)
set @fname = 'FiledName '
Select @fname from tableName -- 错误,不会提示错误,但结果为固定值FiledName,并非所要。
Exec( 'select ' + @fname + ' from tableName ') -- 请注意 加号前后的 单引号的边上加空格 当然将字符串改成变量的形式也可
declare @fname varchar(20)
set @fname = 'FiledName ' --设置字段名 declare @s varchar(1000)
set @s = 'select ' + @fname + ' from tableName '
Exec(@s) -- 成功
exec sp_executesql @s -- 此句会报错
declare @s Nvarchar(1000) -- 注意此处改为nvarchar(1000)
set @s = 'select ' + @fname + ' from tableName '
Exec(@s) -- 成功
exec sp_executesql @s -- 此句正确 3. 输出参数
declare @num int, @sql nvarchar(4000)
set @sql= 'select count(*) from tableName '
exec(@sql)
--如何将exec执行结果放入变量中? declare @num int, @sql nvarchar(4000)
set @sql= 'select @a=count(*) from tableName '
exec sp_executesql @sql,N '@a int output ',@num output
select @num
AS
BEGINdeclare @no varchar(100)select @no=convert(numeric(12,0),right(max(人员编号),12))+1 from p_people where 人员编号 lile convert(varchar(8),getdate(),112) + '%'if @no is not null
select @no as 人员编号else
select convert(varchar(8),getdate(),112)+'0001' as 人员编号END
GO
AS
BEGINdeclare @no varchar(100)--> 上面lile笔误:
select @no=convert(numeric(12,0),right(max(人员编号),12))+1 from p_people where 人员编号 like convert(varchar(8),getdate(),112) + '%'if @no is not null
select @no as 人员编号else
select convert(varchar(8),getdate(),112)+'0001' as 人员编号END
GO