存储过程中有这样的语句
SELECT @recordCount = count(*) from temp_userskills where skillid in (@Param);
正确的格式应该为SELECT @recordCount = count(*) from temp_userskills where skillid in (29,30,153,176); skillid为int型@Param应该设为什么类型?传什么样的数据进?
SELECT @recordCount = count(*) from temp_userskills where skillid in (@Param);
正确的格式应该为SELECT @recordCount = count(*) from temp_userskills where skillid in (29,30,153,176); skillid为int型@Param应该设为什么类型?传什么样的数据进?
declare @s varchar(1000),@值列表 varchar(1000)
set @值列表= '''aa'',''bb'',''cc'''
set @s='select * from 表名 where 字段 in (' + @值列表 + ')'
print @s
exec (@s)
--第二种方法:使用charindex
declare @值列表 varchar(1000)
set @值列表='aa,bb,cc'
select * from 表名 where charindex(',' + 字段 + ',',',' + @值列表 + ',') > 0--------------------------------------------------------------------------
--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,
@sqls nvarchar(4000)
set @sqls='select count(*) from tableName'
exec(@sqls)
--如何将exec执行结果放入变量中? declare @num int,
@sqls nvarchar(4000)
set @sqls='select @a=count(*) from tableName '
exec sp_executesql @sqls,N'@a int output',@num output
select @num
Declare @Param Varchar(100)
Set @Param='1,2,3'
SELECT @recordCount =count(*) from temp_userskills where CharIndex(','+Rtrim(skillid)+',',','+@Param+',')>0
insert into temp_userskills select 1
insert into temp_userskills select 2
insert into temp_userskills select 3
insert into temp_userskills select 4
insert into temp_userskills select 5
insert into temp_userskills select 6
godeclare @Param varchar(10)
set @Param='1,2,3,4'
declare @recordCount int
declare @sql Nvarchar(1000)
set @sql=N'SELECT @recordCount = count(*) from temp_userskills where skillid in ('+@Param+')'
exec sp_executesql @sql,N'@recordCount int output',@recordCount output
select @recordCountdrop table temp_userskills
N'是什么意思?