我必须合并来自 3 个具有不同列的不同表的数据，并且我想要的输出应该基于每个表的不同排序条件。
我在下面使用此查询，但此查询根据菜单位置对整体结果进行排序，如何更改此查询以对单个查询的结果进行排序
SELECT DISTINCT
PID, MENU, Handler, PageLangID, ParentID, IssueID, CatID, MenuPosition
FROM (
--Pages Table
SELECT TOP 50
PageId AS PID,SUBSTRING(PageName,0,20) AS MENU,SUBSTRING(PageInternalLinkURL,0,24) AS Handler, PageLangID,PageInheritance AS ParentID, 1 AS IssueID, 1 AS CatID,
PageLinkPosition as MenuPosition FROM pg_Pages WHERE PageLangID = 1 ORDER BY PageLinkPosition DESC
UNION
--Article Category Table
SELECT TOP 20 p.PageID AS PID, SUBSTRING(c.ArticleCategoryName,0,20) AS MENU,SUBSTRING(p.PageInternalLinkURL,0,24) AS Handler,
c.LangID,p.PageID,1, ArticleCategoryID, 1 AS MenuPosition FROM art_Category c JOIN pg_Pages p
ON c.PageID = p.PageID JOIN art_CategoryType ct ON c.Type = ct.CategoryTypeID WHERE c.LangID =1 AND c.Type =1
ORDER BY c.ArticleCategoryName
UNION
--Magazine Table
SELECT TOP 10 p.PageID AS PID, CAST(IssueCode AS varchar(10)),SUBSTRING(p.PageInternalLinkURL,0,24) AS Handler,LangID,p.PageID AS ParentID, m.IssueID AS IssueID, 1,
1 AS MenuPosition FROM Magazine m JOIN pg_pages p ON m.PageID = p.PageID WHERE LangID =1 ORDER BY 2 DESC
) AS T WHERE T.PageLangID = 1 ORDER BY MenuPosition
第二种方式
如果我使用以下查询，那么我会收到以下错误
消息 156，级别 15，状态 1，第 4 行
关键字“UNION”附近的语法不正确。
消息 156，级别 15，状态 1，第 10 行
关键字“UNION”附近的语法不正确。
询问
--Pages Table
SELECT TOP 50 PageId AS PID,SUBSTRING(PageName,0,20) AS MENU,SUBSTRING(PageInternalLinkURL,0,24) AS Handler, PageLangID,PageInheritance AS ParentID, 1 AS IssueID, 1 AS CatID,
PageLinkPosition as MenuPosition FROM pg_Pages WHERE PageLangID = 1 ORDER BY PageLinkPosition DESC
UNION
--Article Category Table
SELECT TOP 20 p.PageID AS PID, SUBSTRING(c.ArticleCategoryName,0,20) AS MENU,SUBSTRING(p.PageInternalLinkURL,0,24) AS Handler,
c.LangID,p.PageID,1, ArticleCategoryID, 1 AS MenuPosition FROM art_Category c JOIN pg_Pages p
ON c.PageID = p.PageID JOIN art_CategoryType ct ON c.Type = ct.CategoryTypeID WHERE c.LangID =1 AND c.Type =1
ORDER BY c.ArticleCategoryName ASC
UNION
--Magazine Table
SELECT TOP 10 p.PageID AS PID, CAST(IssueCode AS varchar(10)),SUBSTRING(p.PageInternalLinkURL,0,24) AS Handler,LangID,p.PageID AS ParentID, m.IssueID AS IssueID, 1,
1 AS MenuPosition FROM Magazine m JOIN pg_pages p ON m.PageID = p.PageID WHERE LangID =1 ORDER BY 2 DESC
样本数据
PID MENU Handler PageLangID ParentID IssueID CatID MenuPosition
----------- -------------------- ------------------------ ----------- ----------- ----------- ----------- ------------
6 Book Review Page.aspx 1 6 1 18 1
6 Business Page.aspx 1 6 1 16 1
6 Culture Page.aspx 1 6 1 3 1
6 Economy Page.aspx 1 6 1 2 1
6 Finance Page.aspx 1 6 1 19 1
6 Infrastructure Page.aspx 1 6 1 17 1
6 Lifestyle Page.aspx 1 6 1 20 1
6 Others Page.aspx 1 6 1 21 1
6 People Page.aspx 1 6 1 7 1
6 Politics Page.aspx 1 6 1 1 1
6 Sports Page.aspx 1 6 1 4 1
12 102 Page.aspx 1 12 3 1 1
12 103 Page.aspx 1 12 4 1 1
12 106 Page.aspx 1 12 1 1 1
12 109 Page.aspx 1 12 5 1 1
1 Home Default.aspx 1 0 1 1 10
11 Video Videos.aspx 1 10 1 1 10
2 About Us Page.aspx 1 0 1 1 20
5 Articles Articles.aspx 1 0 1 1 30
6 Categories Page.aspx 1 0 1 1 40
12 Archive Page.aspx 1 0 1 1 50
3 News News.aspx 1 0 1 1 60
10 Multimedia Multimedia.aspx 1 0 1 1 70
我想要第一个查询排序ORDER BY PageLinkPosition DESC
要排序的第二个查询ORDER BY c.ArticleCategoryName ASC
和第三个查询排序依据ORDER BY IssueCode DESC
我尝试了很多方法，但无法使其正常工作。
感谢这方面的帮助
更新：基于标记解决方案的工作查询，改动很小
SELECT DISTINCT PID, MENU, Handler, PageLangID, ParentID, IssueID, CatID, MenuPosition, block, rNum
FROM
( --Pages Table
SELECT TOP 50
PageId AS PID,SUBSTRING(PageName,0,20) AS MENU,SUBSTRING(PageInternalLinkURL,0,24) AS Handler, PageLangID,PageInheritance AS ParentID, 1 AS IssueID, 1 AS CatID,
PageLinkPosition as MenuPosition
,Block = 1
,rNum = ROW_NUMBER() OVER (ORDER BY PageLinkPosition DESC)
FROM pg_Pages
WHERE PageLangID = 1
UNION ALL -- Better to UNION ALL and then DISTINCT outside
--Article Category Table
SELECT TOP 20
p.PageID AS PID, SUBSTRING(c.ArticleCategoryName,0,20) AS MENU,SUBSTRING(p.PageInternalLinkURL,0,24) AS Handler,
c.LangID,p.PageID,1, ArticleCategoryID, 1 AS MenuPosition
,Block = 2
,rNum = ROW_NUMBER() OVER (ORDER BY c.ArticleCategoryName )
FROM art_Category c
JOIN pg_Pages p ON c.PageID = p.PageID
JOIN art_CategoryType ct ON c.Type = ct.CategoryTypeID
WHERE c.LangID =1 AND c.Type =1
UNION ALL
--Magazine Table
SELECT TOP 10 p.PageID AS PID, CAST(IssueCode AS varchar(10)),SUBSTRING(p.PageInternalLinkURL,0,24) AS Handler,LangID,p.PageID AS ParentID, m.IssueID AS IssueID, 1,
1 AS MenuPosition
,Block = 3
,rNum = ROW_NUMBER() OVER (ORDER BY CAST(IssueCode AS varchar(10))DESC)
FROM Magazine m
JOIN pg_pages p ON m.PageID = p.PageID
WHERE LangID =1
) AS T WHERE T.PageLangID = 1
ORDER BY Block, rNum
MARK 稍后将他的解决方案更新为 CTE 版本，请检查他的答案。