create proc [dbo].[xqCouns]
@kaishijian varchar(50)='2009-12-15',
@endshijian varchar(50)='2009-12-29' ,
@istong bit =1
as declare @strSQL varchar(5000) -- 主语句
begin
if @istong =1
select @strSQL=' select Userinfo.* , isnull(t.cnt,0) counts , isnull(s.cnt,0) countss ,isnull(ss.cnt,0) countsss from Userinfo left join
(select u_code , count(1) cnt from UnitCard where datediff(week,tianxieTime,'+@endshijian+') = 0 and isxiugai =0
group by u_code) t
on Userinfo.u_code = t.u_code left join (select u_code , count(1) cnt from UnitCard where datediff(week,tianxieTime,'+@endshijian+') = 0 and isxiugai =1
group by u_code) s
on Userinfo.u_code = s.u_codeleft join (select U_id , count(1) cnt from UserLoginInfo where datediff(week,shjian,'+@endshijian+') = 0
group by u_id) ss
on Userinfo.u_code = ss.U_id'end
print (@strsql)执行的存储过程结果 select Userinfo.* , isnull(t.cnt,0) counts , isnull(s.cnt,0) countss ,isnull(ss.cnt,0) countsss from Userinfo left join
(select u_code , count(1) cnt from UnitCard where datediff(week,tianxieTime,2009-12-29) = 0 and isxiugai =0
group by u_code) t
on Userinfo.u_code = t.u_code left join (select u_code , count(1) cnt from UnitCard where datediff(week,tianxieTime,2009-12-29) = 0 and isxiugai =1
group by u_code) s
on Userinfo.u_code = s.u_codeleft join (select U_id , count(1) cnt from UserLoginInfo where datediff(week,shjian,2009-12-29) = 0
group by u_id) ss
on Userinfo.u_code = ss.U_id
只要的问题时间这里 没有 ''(单引号)如 '2009-12-29'
@kaishijian varchar(50)='2009-12-15',
@endshijian varchar(50)='2009-12-29' ,
@istong bit =1
as declare @strSQL varchar(5000) -- 主语句 begin
if @istong =1 select @strSQL=' select Userinfo.* , isnull(t.cnt,0) counts , isnull(s.cnt,0) countss ,isnull(ss.cnt,0) countsss from Userinfo left join
(select u_code , count(1) cnt from UnitCard where datediff(week,tianxieTime,'+@endshijian+') = 0 and isxiugai =0
group by u_code) t
on Userinfo.u_code = t.u_code left join (select u_code , count(1) cnt from UnitCard where datediff(week,tianxieTime,'+@endshijian+') = 0 and isxiugai =1
group by u_code) s
on Userinfo.u_code = s.u_code left join (select U_id , count(1) cnt from UserLoginInfo where datediff(week,shjian,'''+@endshijian+''') = 0
group by u_id) ss
on Userinfo.u_code = ss.U_id' end
print (@strsql)
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
--''代表一个'
create proc [dbo].[xqCouns]
@kaishijian varchar(50)='2009-12-15',
@endshijian varchar(50)='2009-12-29' ,
@istong bit =1
as declare @strSQL varchar(5000) -- 主语句 begin
if @istong =1 select @strSQL=' select Userinfo.* , isnull(t.cnt,0) counts , isnull(s.cnt,0) countss ,isnull(ss.cnt,0) countsss from Userinfo left join
(select u_code , count(1) cnt from UnitCard where datediff(week,tianxieTime,'''+@endshijian+''') = 0 and isxiugai =0
group by u_code) t
on Userinfo.u_code = t.u_code left join (select u_code , count(1) cnt from UnitCard where datediff(week,tianxieTime,'''+@endshijian+''') = 0 and isxiugai =1
group by u_code) s
on Userinfo.u_code = s.u_code left join (select U_id , count(1) cnt from UserLoginInfo where datediff(week,shjian,'''+@endshijian+''') = 0
group by u_id) ss
on Userinfo.u_code = ss.U_id' end
print (@strsql)
@kaishijian varchar(50)='2009-12-15',
@endshijian varchar(50)='2009-12-29' ,
@istong bit =1
as
/*
exec [xqCouns] '2009-12-15','2009-12-29',1
*/declare @strSQL varchar(max) -- 主语句 begin
if @istong =1 set @strSQL=' select Userinfo.* , isnull(t.cnt,0) counts , isnull(s.cnt,0) countss ,isnull(ss.cnt,0) countsss from Userinfo left join
(select u_code , count(1) cnt from UnitCard where datediff(week,tianxieTime,'''+@endshijian+''') = 0 and isxiugai =0
group by u_code) t
on Userinfo.u_code = t.u_code left join (select u_code , count(1) cnt from UnitCard where datediff(week,tianxieTime,'''+@endshijian+''') = 0 and isxiugai =1
group by u_code) s
on Userinfo.u_code = s.u_code
left join (select U_id , count(1) cnt from UserLoginInfo where datediff(week,shjian,'''+@endshijian+''') = 0
group by u_id) ss
on Userinfo.u_code = ss.U_id'
print (@strsql) end