存储过程中的top+变量(downmoon)


存储过程中的TOP后跟一个变量会如何?

Create proc getWorkPlan2
(@intCounter int
,@lngUserID int)
  
as
select Top 5 lngWorkID,strWorkName,strExecHumanName,strBeginDate
from worklist where lngExecHumanID= @lngUserID
order by lngWorkID desc

  现在想将这里的Top 5 改为变量· Top @intCounter

  如下

ALTER proc getWorkPlan2
(@intCounter int
,@lngUserID int)
as  
exec ('select Top '+convert(varchar(10),@intCounter)+' lngWorkID,strWorkName,strExecHumanName,strBeginDate from worklist where lngExecHumanID= '
+convert(varchar(10),@lngUserID) +' order by lngWorkID desc '

  老是提示 在关键字 'convert' 附近有语法错误。

  于是改为

ALTER proc getWorkPlan2
(@intCounter int
,@lngUserID int)
  
as
declare @strCounter varchar(10)
set @strCounter=convert(varchar(10),@intCounter)
declare @strUserID varchar(10)
set @strUserID=convert(varchar(10),@lngUserID)
exec ('select Top '+@strCounter+' lngWorkID,strWorkName,strExecHumanName,strBeginDate from worklist where lngExecHumanID= '
+@strUserID +' order by lngWorkID desc '
)

  OK!

  后来,经saucer(思归)大哥提醒,发现可以用以下语句实现:

Alter proc getWorkPlan2
(
@intCounter int
,@lngUserID int
)
as
set rowcount @intCounter
select lngWorkID,strWorkName,strExecHumanName,strBeginDate
from worklist where lngExecHumanID= @lngUserID
order by lngWorkID desc

存储过程中的TOP后跟一个变量会如何?

Create proc getWorkPlan2
(@intCounter int
,@lngUserID int)
  
as
select Top 5 lngWorkID,strWorkName,strExecHumanName,strBeginDate
from worklist where lngExecHumanID= @lngUserID
order by lngWorkID desc

  现在想将这里的Top 5 改为变量· Top @intCounter

  如下

ALTER proc getWorkPlan2
(@intCounter int
,@lngUserID int)
as  
exec ('select Top '+convert(varchar(10),@intCounter)+' lngWorkID,strWorkName,strExecHumanName,strBeginDate from worklist where lngExecHumanID= '
+convert(varchar(10),@lngUserID) +' order by lngWorkID desc '

  老是提示 在关键字 'convert' 附近有语法错误。

  于是改为

ALTER proc getWorkPlan2
(@intCounter int
,@lngUserID int)
  
as
declare @strCounter varchar(10)
set @strCounter=convert(varchar(10),@intCounter)
declare @strUserID varchar(10)
set @strUserID=convert(varchar(10),@lngUserID)
exec ('select Top '+@strCounter+' lngWorkID,strWorkName,strExecHumanName,strBeginDate from worklist where lngExecHumanID= '
+@strUserID +' order by lngWorkID desc '
)

  OK!

  后来,经saucer(思归)大哥提醒,发现可以用以下语句实现:

Alter proc getWorkPlan2
(
@intCounter int
,@lngUserID int
)
as
set rowcount @intCounter
select lngWorkID,strWorkName,strExecHumanName,strBeginDate
from worklist where lngExecHumanID= @lngUserID
order by lngWorkID desc


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