PROCEDURE Test
(
@PeopleList ntext
)
ASSELECT UserID
From UserTable
WHERE
UserID IN (' + @PeopleList + ')上面是错误的, 怎么解决
如:我的参数是(C#): command.Parameters.Add("@PeopleList", SqlDbType.NText).Value = "3,5,2";
(
@PeopleList ntext
)
ASSELECT UserID
From UserTable
WHERE
UserID IN (' + @PeopleList + ')上面是错误的, 怎么解决
如:我的参数是(C#): command.Parameters.Add("@PeopleList", SqlDbType.NText).Value = "3,5,2";
(
@PeopleList ntext
)
AS
EXEC('
SELECT UserID
From UserTable
WHERE
UserID IN (' + @PeopleList + ')
')
create PROCEDURE Test
(
@PeopleList ntext
)
ASEXEC('SELECT UserID From UserTable WHERE UserID IN (' + @PeopleList + ')')
动态sql语句基本语法
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
PROCEDURE Test (@PeopleList ntext)
AS
SELECT UserID From UserTable
WHERE charindex(N',' + UserID + N',',N',' + @PeopleList + N',') > 0
GO
AS
SELECT UserID From UserTable
WHERE charindex(N',' + UserID + N',',N',' + @PeopleList + N',') > 0
GO
--还可以
PROCEDURE Test (@PeopleList ntext)
AS
SELECT UserID From UserTable
WHERE patindex(N'%,' + UserID + N',%',N',' + @PeopleList + N',') > 0
GOPROCEDURE Test (@PeopleList ntext)
AS
SELECT UserID From UserTable
WHERE N',' + UserID + N',' like N',' + @PeopleList + N','
GO