Question

我有这个查询。对于作品表中的AWARDED（1）和NOT AWARDED（0）作品，它应返回Count。

        Select Count(w.WorkID)as Total, w.IsAwarded, org.OrganizationName
        From Works w
        Inner Join MC_MemberShip.Membership.Organization org
        ON org.OrganizationID= w.Organization_ID
        where Convert(varchar(11), w.OpeningDate) >= Convert(varchar(11), @FromDate) 
        and  Convert(varchar(11), w.OpeningDate) < DATEADD(day, 1, Convert(varchar(11), @ToDate))
        and w.IsActive=1 and 
        ISNULL(w.IsAwarded,0)= 0 and w.Organization_ID= case when @OrgID= -1 then w.Organization_ID else @OrgID end
        group by org.OrganizationName, w.IsAwarded

现在这个查询返回NOT AWARDED的总计数，即仅0，但我想在同一查询中返回AWARDED的计数。

Organization    TotalAwardedWorks    TotalNotAwardedWorks
Town 1              1                        2
Town 2              44                       33

Answer 1

您的查询应如下所示：

select org.OrganizationName,
       Count(*) as Total,
       sum(case when w.IsAwarded = 0 or w.IsAwarded is null then 1 else 0 end) as TotalNotAward,
       sum(case when w.IsAwarded = 1 then 0 else 1 end) as TotalAward
from Works w Inner Join
     MC_MemberShip.Membership.Organization org
     on org.OrganizationID = w.Organization_ID
where w.OpeningDate >= @FromDate and
      w.OpeningDate < dateadd(day, 1, @ToDate) and
      w.IsActive = 1 and 
      (w.Organization_ID = @OrgId or @OrgID= -1)
group by org.OrganizationName;

注意：

不要将日期转换为字符串以执行比较。这是不正常的。
通常，不鼓励在case子句中使用where。使用or更清楚地表示逻辑。
您可以使用case将条件置于聚合函数中来获得所需内容。

如何在2列中返回计数？

1 个答案: