Question

这是我的代码：

ALTER PROCEDURE [db_owner].[get_checkin_likes]
@likes integer
AS
Select count(*) 
from
(
  select checkin_id as Checkin, users_id as 'Liked by'
  from checkin_likes
  where @likes = checkin_id
)

当我执行此命令时，我期待两件事：

我希望得到所有喜欢我选择的特定签到的用户的列表
我希望能够计算出特定支票的用户数量

但是，当我尝试运行该命令时，它返回：

Msg 102, Level 15, State 1, Procedure get_checkin_likes, Line 9
Incorrect syntax near ')'.

关于如何解决这个问题或者为什么会发生这种情况的任何建议？

Answer 1

您需要命名您的子查询;尝试在最后的括号后面放一些东西：

ALTER PROCEDURE [db_owner].[get_checkin_likes]
@likes integer
AS
Select count(*) 
from
(
  select checkin_id as Checkin, users_id as 'Liked by'
  from checkin_likes
  where @likes = checkin_id
) a

我可能应该提一下，当您运行此查询时，您只会获得倒计时。我不确定你的用例在这里，但是你可以做一个OVER并在最后用一个计数返回所有内容

编辑：

我个人会这样做并将其全部记录在一个记录集中：

ALTER PROCEDURE [db_owner].[get_checkin_likes]
@likes integer
AS

  select checkin_id as Checkin
    , users_id as 'Liked by'
    , COUNT(checkin_id) OVER () AS total_rows, 
  from checkin_likes
  where @likes = checkin_id

为什么我的计数返回语法错误？

1 个答案: