Question

我有下面的代码，我试图找出上个月使用的前10个服务器，但有问题，不是很好的SQL。如果可能的话，需要一些帮助或建议。

我在前10个应用程序上工作，但无法弄清楚如何让这10个服务器实现这一点。

SELECT TOP 10 dbo_LU_SERVERNAME.SERVERNAME, Count(*) AS SessionNumbers
FROM dbo_LU_SERVERNAME INNER JOIN dbo_SDB_SESSION ON dbo_LU_SERVERNAME.PK_SERVERNAMEID = dbo_SDB_SESSION.FK_SERVERNAMEID
WHERE (((dbo_SDB_SESSION.SESSIONSTART) Between Now() And DateAdd("d",-30,Now())))
GROUP BY dbo_LU_SERVERNAME.SERVERNAME
ORDER BY Count(*) DESC;

UNION ALL SELECT "Other" AS SERVERNAME, Count(*) AS SessionNumbers
FROM (dbo_LU_SERVERNAME
INNER JOIN dbo_SDB_SESSION  
ON dbo_LU_SERVER.PK_SERVERID = dbo_SDB_SESSION.FK_SERVERID)  
LEFT JOIN (SELECT TOP 10 dbo_LU_SERVERNAME.SERVERNAME, Count(*) AS SessionNos 
           FROM dbo_LU_SERVERNAME
           INNER JOIN dbo_SDB_SESSION 
           ON dbo_LU_SERVER.PK_SERVERID = dbo_SDB_SESSION.FK_SERVERID
           WHERE (((dbo_SDB_SESSION.SESSIONSTART) Between Now() And DateAdd("d",-31,Now())))
           GROUP BY dbo_LU_SERVERNAME.SERVERNAME
           ORDER BY Count(*) DESC) AS s  ON dbo_LU_SERVERNAME.SERVERNAME = s.SERVERNAME

WHERE s.SERVERNAME Is Null
GROUP BY "Other";

这是适用于前10名APPS的SQL。

SELECT TOP 10 dbo_LU_APPNAME.APPNAME, Count(*) AS SessionNos
FROM dbo_LU_APPNAME INNER JOIN dbo_SDB_SESSION ON dbo_LU_APPNAME.PK_APPNAMEID = dbo_SDB_SESSION.FK_APPNAMEID
WHERE (((dbo_SDB_SESSION.SESSIONSTART) Between Now() And DateAdd("d",-30,Now())))
GROUP BY dbo_LU_APPNAME.APPNAME
ORDER BY Count(*) DESC;

UNION ALL SELECT "Other" AS APPNAME, Count(*) AS SessionNos 
FROM (dbo_LU_APPNAME
INNER JOIN dbo_SDB_SESSION  
ON dbo_LU_APPNAME.PK_APPNAMEID = dbo_SDB_SESSION.FK_APPNAMEID)  
LEFT JOIN (SELECT TOP 10 dbo_LU_APPNAME.APPNAME, Count(*) AS SessionNos 
           FROM dbo_LU_APPNAME
           INNER JOIN dbo_SDB_SESSION 
           ON dbo_LU_APPNAME.PK_APPNAMEID = dbo_SDB_SESSION.FK_APPNAMEID
           WHERE (((dbo_SDB_SESSION.SESSIONSTART) Between Now() And DateAdd("d",-31,Now())))
           GROUP BY dbo_LU_APPNAME.APPNAME
           ORDER BY Count(*) DESC) AS s  ON dbo_LU_APPNAME.APPNAME = s.APPNAME

WHERE s.APPNAME Is Null
GROUP BY "Other";

请注意，这些表格相关： dbo_LU_SERVER ---＆gt; FK_SERVERNAMEID，PK_SERVERID dbo_LU_SERVERNAME ---＆gt; PK_SERVERNAMEID dbo.SDB.SESSION ---＆gt; FK_SERVERID

我不确定我做错了什么。

请帮助。

谢谢

Answer 1

我设法回答了我的问题。

SELECT TOP 10 dbo_LU_SERVERNAME.SERVERNAME, Count(*) AS SessionNumbers
FROM dbo_LU_SERVERNAME INNER JOIN dbo_SDB_SESSION ON dbo_LU_SERVERNAME.PK_SERVERNAMEID = dbo_SDB_SESSION.FK_SERVERID
WHERE (((dbo_SDB_SESSION.SESSIONSTART) Between Now() And DateAdd("d",-30,Now())))
GROUP BY dbo_LU_SERVERNAME.SERVERNAME
ORDER BY Count(*) DESC;

UNION ALL SELECT "Other" AS SERVERNAME, Count(*) AS SessionNumbers
FROM  (dbo_LU_SERVERNAME INNER JOIN dbo_SDB_SESSION ON dbo_LU_SERVERNAME.PK_SERVERNAMEID = dbo_SDB_SESSION.FK_SERVERID)
LEFT JOIN (SELECT TOP 10 dbo_LU_SERVERNAME.SERVERNAME, Count(*) AS SessionNos 
           FROM dbo_LU_SERVERNAME INNER JOIN dbo_SDB_SESSION ON dbo_LU_SERVERNAME.PK_SERVERNAMEID = dbo_SDB_SESSION.FK_SERVERID
           WHERE (((dbo_SDB_SESSION.SESSIONSTART) Between Now() And DateAdd("d",-31,Now())))
           GROUP BY dbo_LU_SERVERNAME.SERVERNAME
           ORDER BY Count(*) DESC) AS a  ON dbo_LU_SERVERNAME.SERVERNAME = a.SERVERNAME

WHERE a.SERVERNAME Is Null
GROUP BY "Other";

感谢您的评论，我确实在几乎与此相同的时间之前提出了另一个问题，但另一个问题涉及两个相关实体，这是三个相关实体。

再次感谢

干杯：）

SQL TOP 10排名查询帮助必需

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