\n\u4f7f\u7528\u884c\u8f6c\u5217\u5e38\u89c1\u7684\u5c31\u662f\u6570\u5b57\u7c7b\u7684\uff0c\u4e00\u822c\u7528sum\u51fd\u6570\u5c31\u53ef\u4ee5\u5b9e\u73b0\uff0c\u6700\u8fd1\u9047\u5230\u4e86\u4e00\u4e2a\u7eaf\u6587\u672c\u5f62\u5f0f\u7684\uff0c\u65e0\u6cd5\u901a\u8fc7sum\u6765\u5b9e\u73b0
\n\u540e\u6765\u53d1\u73b0max\u51fd\u6570\u5c45\u7136\u4e5f\u53ef\u4ee5(min\u540c\u6837\u53ef\u4ee5)\uff0cmax\u76f8\u5f53\u4e8e\u6309\u9996\u5b57\u6bcd\u6392\u5e8f
\n\u5199\u4e0b\u6765\u8bb0\u5f55\u4e00\u4e0b<\/p>\n
\u793a\u4f8b\u5982\u4e0b\uff1a
\n–\u5148\u521b\u5efa\u4e00\u4e2a\u4e34\u65f6\u8868\uff0c\u4e09\u4e2a\u5b57\u6bb5\u5206\u522b\u4e3aID\uff0c\u6587\u672c\uff0c\u5e8f\u53f7
\n\u5e8f\u53f7\u975e\u5fc5\u9700\uff0c\u4e5f\u53ef\u4ee5\u901a\u8fc7ROW_NUMBER() OVER (PARTITION BY \u3002\u3002ORDER BY\u3002\u3002 \uff09\u6765\u6dfb\u52a0\u5e8f\u53f7
\nCREATE TABLE #test (id INT,texttt NVARCHAR(50),num INT)
\nINSERT INTO #test ( id, texttt ,num)
\nVALUES
\n(1,N’\u4e00’,1)
\n,(1,N’\u4e8c’,2)
\n,(1,N’\u4e09’,3)
\n,(1,N’\u56db’,4)
\n,(1,N’\u4e00\u4e8c’,5)
\n,(1,N’\u4e09\u56db’,6)
\n,(2,N’\u4e00’,1)
\n,(2,N’\u4e8c’,2)
\n,(2,N’\u4e09’,3)
\n,(2,N’\u56db’,4)
\n,(2,N’\u4e00\u4e8c’,5)
\n,(2,N’\u4e09\u56db’,6)
\n,(3,N’\u4e00’,1)
\n,(3,N’\u4e8c’,2)
\n,(3,N’\u4e09’,3)
\n,(3,N’\u56db’,4)
\n,(3,N’\u4e00\u4e8c’,5)
\n,(3,N’\u4e09\u56db’,6)
\n,(4,N’\u4e00’,1)
\n,(4,N’\u4e8c’,2)
\n,(4,N’\u4e09’,3)
\n,(4,N’\u56db’,4)
\n,(4,N’\u4e00\u4e8c’,5)
\n,(4,N’\u4e09\u56db’,6)
\n,(5,N’\u4e00’,1)
\n,(5,N’\u4e8c’,2)
\n,(5,N’\u4e09’,3)
\n,(5,N’\u56db’,4)
\n,(5,N’\u4e00\u4e8c’,5)
\n,(5,N’\u4e09\u56db’,6)<\/p>\n
SELECT * FROM #test <\/span>–\u770b\u4e0b\u4e34\u65f6\u8868\u5185\u5bb9<\/p>\n SELECT * FROM #test a MAX(texttt) \uff1a\u805a\u5408\u9700\u8981\u884c\u8f6c\u5217\u7684\u5b57\u6bb5 num IN ([6],[5],[4],[3],[2],[1])\uff1a\u5b57\u6bb5\u503c\u987a\u5e8f\u53d1\u751f\u53d8\u5316<\/p>\n <\/p>\n","protected":false},"excerpt":{"rendered":" \u4f7f\u7528\u884c\u8f6c\u5217\u5e38\u89c1\u7684\u5c31\u662f\u6570\u5b57\u7c7b\u7684\uff0c\u4e00\u822c\u7528sum\u51fd\u6570\u5c31\u53ef\u4ee5\u5b9e\u73b0\uff0c\u6700\u8fd1\u9047\u5230\u4e86\u4e00\u4e2a\u7eaf\u6587\u672c\u5f62\u5f0f\u7684\uff0c\u65e0\u6cd5\u901a\u8fc7sum\u6765\u5b9e\u73b0 \u540e … \u9605\u8bfb\u66f4\u591a<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[54,68,69],"class_list":["post-223","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-microsoft","tag-server","tag-sql"],"_links":{"self":[{"href":"https:\/\/yeslq.com\/index.php?rest_route=\/wp\/v2\/posts\/223","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/yeslq.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yeslq.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yeslq.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yeslq.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=223"}],"version-history":[{"count":1,"href":"https:\/\/yeslq.com\/index.php?rest_route=\/wp\/v2\/posts\/223\/revisions"}],"predecessor-version":[{"id":275,"href":"https:\/\/yeslq.com\/index.php?rest_route=\/wp\/v2\/posts\/223\/revisions\/275"}],"wp:attachment":[{"href":"https:\/\/yeslq.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=223"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yeslq.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=223"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yeslq.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=223"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nPIVOT (MAX(texttt) FOR num IN ([1],[2],[3],[4],[5],[6]) ) b<\/p>\n
\nnum IN ([1],[2],[3],[4],[5],[6]) \uff1a\u5c06\u5e8f\u53f7\u5217\u5bf9\u5e94\u5185\u5bb9\u8f6c\u53d8\u4e3a\u5b57\u6bb5\u503c<\/p>\n