Sql 选择子查询计数，而不是使用'；和'；滤波器

我有下面的查询，它运行得很好。但是，您会注意到注释行，其中我指定了一个特定的条件来过滤结果。不必取消对该行的注释，然后再次运行查询，有没有办法将该行的结果添加为一列，这样我只需运行一次

select 
du.USERID as 'Username', 
du.LIBRARYNAME as 'Home Office', 
count(*) as 'Documents created'
from mhgroup.dochistory dh (nolock)
inner join mhgroup.DOCMASTER dm (nolock)
on (dh.DOCNUM=dm.DOCNUM and dh.VERSION=dm.VERSION)
inner join mhgroup.DOCUSERS du (nolock)
on dh.DOCUSER=du.USERID
where (dh.activity_datetime >= dateadd(dd,-365, getutcdate()))
and du.LIBRARYNAME in ('DEN','HOU')
and dm.TYPE = 'd'
and dh.ACTIVITY = 'Create'
--and dm.C1ALIAS like '9999%'
group by du.USERID, du.LIBRARYNAME
order by count(*) desc

现在，结果如下所示：

Username    Home Office Documents created
User1       HOU         1520
User2       HOU         475
User3       DEN         182
User4       DEN         54

Username    Home Office Documents created Non-Billable Docs
    User1       HOU         1520          500
    User2       HOU         475           250
    User3       DEN         182           82
    User4       DEN         54            34

我想让他们看起来像这样：

Username    Home Office Documents created
User1       HOU         1520
User2       HOU         475
User3       DEN         182
User4       DEN         54

Username    Home Office Documents created Non-Billable Docs
    User1       HOU         1520          500
    User2       HOU         475           250
    User3       DEN         182           82
    User4       DEN         54            34

---

您可以将其添加为总和：

SELECT du.USERID AS 'Username'
     , du.LIBRARYNAME AS 'Home Office'
     , COUNT(*) AS 'Documents created'
     , SUM(   CASE
                  WHEN dm.C1ALIAS LIKE '9999%' THEN
                      1
                  ELSE
                      0
              END
          ) AS [Non-Billable Docs]
FROM mhgroup.dochistory dh
    (NOLOCK)
    INNER JOIN mhgroup.DOCMASTER dm
    (NOLOCK) ON (
                    dh.DOCNUM = dm.DOCNUM
                    AND dh.VERSION = dm.VERSION
                )
    INNER JOIN mhgroup.DOCUSERS du
    (NOLOCK) ON dh.DOCUSER = du.USERID
WHERE (dh.activity_datetime >= DATEADD(dd, -365, GETUTCDATE()))
      AND du.LIBRARYNAME IN ( 'DEN', 'HOU' )
      AND dm.TYPE = 'd'
      AND dh.ACTIVITY = 'Create'
GROUP BY du.USERID
       , du.LIBRARYNAME
ORDER BY COUNT(*) DESC;

---

您可以将其添加为总和：

SELECT du.USERID AS 'Username'
     , du.LIBRARYNAME AS 'Home Office'
     , COUNT(*) AS 'Documents created'
     , SUM(   CASE
                  WHEN dm.C1ALIAS LIKE '9999%' THEN
                      1
                  ELSE
                      0
              END
          ) AS [Non-Billable Docs]
FROM mhgroup.dochistory dh
    (NOLOCK)
    INNER JOIN mhgroup.DOCMASTER dm
    (NOLOCK) ON (
                    dh.DOCNUM = dm.DOCNUM
                    AND dh.VERSION = dm.VERSION
                )
    INNER JOIN mhgroup.DOCUSERS du
    (NOLOCK) ON dh.DOCUSER = du.USERID
WHERE (dh.activity_datetime >= DATEADD(dd, -365, GETUTCDATE()))
      AND du.LIBRARYNAME IN ( 'DEN', 'HOU' )
      AND dm.TYPE = 'd'
      AND dh.ACTIVITY = 'Create'
GROUP BY du.USERID
       , du.LIBRARYNAME
ORDER BY COUNT(*) DESC;

---

对此，可以使用带有SUM的case表达式

我要提醒你注意诺洛克。使用这种暗示几乎从来都不是一个好主意。有那么多不好的事情。不推荐使用WITH关键字作为查询提示

你可能还想看看这个

---

对此，可以使用带有SUM的case表达式

我要提醒你注意诺洛克。使用这种暗示几乎从来都不是一个好主意。有那么多不好的事情。不推荐使用WITH关键字作为查询提示

你可能还想看看这个