PROC中用到了多选的参数 所以要用EXEC('....playchannel in ('频道1','频道2','频道3') )但是同时用到SELECT @A=...............所以就要EXEC('SELECT @A=...............playchannel in ('频道1','频道2','频道3') )但没有执行,现在烦坏了,这种多选的参数,有没有方法解决上面的查询?
--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
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
set @sql='select @m1 =sum(isnull(getmoney,0)) from paydetialall_view p where (select theyear from account_view where stime<=p.paydate and etime>=p.paydate )='+cast(@selyear as varchar) +' and buskind in ('+@buskind+') and playchannel='''+@playchannelx+''' and (select themonth from account_view where stime<=p.paydate and etime>=p.paydate)=1 ' exec sp_executesql @sql,N'@m1 decimal(18,2) output',@m1 output
set @sql='select @a=count(*) from tableName '
exec sp_executesql @sql,N'@a int output',@num output
select @num
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
(select theyear from account_view where stime<=p.paydate and etime>=p.paydate )='+cast(@selyear as varchar) +' and buskind
in ('+@buskind+') and playchannel='''+@playchannelx+''' and (select themonth from account_view where stime<=p.paydate and etime>=p.paydate)=1 '
exec sp_executesql @sql,N'@m1 decimal(18,2) output',@m1 output
就可以,谢谢,太感谢大哥了,还有我发现
数字的东西有一点区别'+cast(@selyear as varchar) +'
而在EXEC(....'+@selyear+')就可以了