{"id":200252,"date":"2025-05-06T09:50:47","date_gmt":"2025-05-06T01:50:47","guid":{"rendered":"https:\/\/server.hk\/cnblog\/200252\/"},"modified":"2025-05-06T09:50:47","modified_gmt":"2025-05-06T01:50:47","slug":"%e5%a6%82%e4%bd%95%e9%80%9a%e8%bf%87-sql-%e6%9f%a5%e8%af%a2%e6%89%be%e5%87%ba%e6%af%8f%e7%af%87%e6%96%87%e7%ab%a0%e8%a2%ab%e5%93%aa%e4%ba%9b%e7%94%a8%e6%88%b7%e7%9c%8b%e8%bf%87%ef%bc%8c%e8%bf%99","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/200252\/","title":{"rendered":"\u5982\u4f55\u901a\u8fc7 SQL \u67e5\u8be2\u627e\u51fa\u6bcf\u7bc7\u6587\u7ae0\u88ab\u54ea\u4e9b\u7528\u6237\u770b\u8fc7\uff0c\u8fd9\u4e9b\u7528\u6237\u8fd8\u770b\u4e86\u54ea\u4e9b\u5176\u4ed6\u6587\u7ae0\uff0c\u5e76\u7edf\u8ba1\u6d4f\u89c8\u6b21\u6570\u6700\u591a\u7684\u6587\u7ae0\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

\u5982\u4f55\u901a\u8fc7 SQL \u67e5\u8be2\u627e\u51fa\u6bcf\u7bc7\u6587\u7ae0\u88ab\u54ea\u4e9b\u7528\u6237\u770b\u8fc7\uff0c\u8fd9\u4e9b\u7528\u6237\u8fd8\u770b\u4e86\u54ea\u4e9b\u5176\u4ed6\u6587\u7ae0\uff0c\u5e76\u7edf\u8ba1\u6d4f\u89c8\u6b21\u6570\u6700\u591a\u7684\u6587\u7ae0\uff1f<\/h1>\n

\u77e5\u8bc6\u70b9\u638c\u63e1\u4e86\uff0c\u8fd8\u9700\u8981\u4e0d\u65ad\u7ec3\u4e60\u624d\u80fd\u719f\u7ec3\u8fd0\u7528\u3002\u4e0b\u9762\u4e3b\u673a\u5b9d\u8d1d\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u4e2a\u6570\u636e\u5e93\u5f00\u53d1\u5b9e\u6218\uff0c\u624b\u628a\u624b\u6559\u5927\u5bb6\u5b66\u4e60\u300a\u5982\u4f55\u901a\u8fc7 SQL \u67e5\u8be2\u627e\u51fa\u6bcf\u7bc7\u6587\u7ae0\u88ab\u54ea\u4e9b\u7528\u6237\u770b\u8fc7\uff0c\u8fd9\u4e9b\u7528\u6237\u8fd8\u770b\u4e86\u54ea\u4e9b\u5176\u4ed6\u6587\u7ae0\uff0c\u5e76\u7edf\u8ba1\u6d4f\u89c8\u6b21\u6570\u6700\u591a\u7684\u6587\u7ae0\uff1f\u300b\uff0c\u5728\u5b9e\u73b0\u529f\u80fd\u7684\u8fc7\u7a0b\u4e2d\u4e5f\u5e26\u5927\u5bb6\u91cd\u65b0\u6e29\u4e60\u76f8\u5173\u77e5\u8bc6\u70b9\uff0c\u6e29\u6545\u800c\u77e5\u65b0\uff0c\u56de\u5934\u770b\u770b\u8bf4\u4e0d\u5b9a\u53c8\u6709\u4e0d\u4e00\u6837\u7684\u611f\u609f\uff01<\/p>\n

<\/p>\n

\u4e00\u4e2a sql \u8bf7\u6559<\/strong><\/p>\n

\u95ee\u9898\uff1a<\/strong><\/p>\n

\u60f3\u901a\u8fc7 sql \u67e5\u8be2\u8ba1\u7b97\u6bcf\u7bc7\u6587\u7ae0\u88ab\u54ea\u4e9b\u7528\u6237\u770b\u8fc7\uff0c\u8fd9\u4e9b\u7528\u6237\u8fd8\u770b\u4e86\u54ea\u4e9b\u5176\u4ed6\u6587\u7ae0\uff0c\u5e76\u7edf\u8ba1\u6d4f\u89c8\u6b21\u6570\u6700\u591a\u7684\u6587\u7ae0\u3002<\/p>\n

\u6b65\u9aa4\uff1a<\/strong><\/p>\n

\u7b2c\u4e00\u6b65\uff1a\u5df2\u6709\u4e00\u5f20\u8868\u8bb0\u5f55\u6bcf\u4e2a\u7528\u6237\u6d4f\u89c8\u8fc7\u7684\u6587\u7ae0\uff08\u5e26 id\uff09\u3002<\/p>\n

\u7b2c\u4e8c\u6b65\uff1a\u9700\u8981\u8ba1\u7b97\u6bcf\u7bc7\u6587\u7ae0\u88ab\u54ea\u4e9b\u7528\u6237\u770b\u8fc7\uff08\u7528\u6237\u96c6\u5408\uff09\u3002<\/p>\n

\u7b2c\u4e09\u6b65\uff1a\u627e\u51fa\u8fd9\u4e9b\u7528\u6237\u96c6\u5408\u4e2d\u6bcf\u4e2a\u7528\u6237\u53c8\u6d4f\u89c8\u4e86\u54ea\u4e9b\u5176\u4ed6\u6587\u7ae0\uff08\u4f7f\u7528\u76f8\u540c\u521d\u59cb\u8868\uff09\u3002<\/p>\n

\u7b2c\u56db\u6b65\uff1a\u5bf9\u8fd9\u4e9b\u6587\u7ae0\u8fdb\u884c\u7edf\u8ba1\uff0c\u8ba1\u7b97\u51fa\u73b0\u6b21\u6570\u6700\u591a\uff08\u5173\u8054\u5ea6\u6700\u9ad8\uff09\u7684\u6587\u7ae0\u3002<\/p>\n

\u7b54\u6848\uff1a<\/strong><\/p>\n

\u65b9\u6848 1\uff1a\u5f02\u6b65\u4efb\u52a1\u7edf\u8ba1<\/strong><\/p>\n

\u5bf9\u4e8e\u6570\u636e\u91cf\u8f83\u5927\u7684\u60c5\u51b5\uff0c\u5efa\u8bae\u4f7f\u7528\u5f02\u6b65\u4efb\u52a1\u5b9a\u671f\u7edf\u8ba1\u6570\u636e\uff0c\u907f\u514d\u5bf9\u6570\u636e\u5e93\u9020\u6210\u8d1f\u62c5\u3002<\/p>\n

\u65b9\u6848 2\uff1asql \u5b9e\u73b0<\/strong><\/p>\n

\u5982\u679c\u975e\u8981\u4f7f\u7528 sql \u5b9e\u73b0\uff0c\u53ef\u4ee5\u53c2\u8003\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n

-- \u9875\u9762\u8bbf\u95ee\u65e5\u5fd7\u8868\nCREATE TABLE `read_log` (\n`content_id` int,\n`uid` int\n)\n\n-- \u6bcf\u4e2a\u9875\u9762\u7684\u8bbf\u95ee\u7528\u6237\u8bbf\u95ee\u8fc7\u7684\u9875\u9762\u5728\u8fd9\u4e9b\u7528\u6237\u4e0b\u7684\u8bbf\u95ee\u6b21\u6570\u7edf\u8ba1\nselect\nl.content_id as l_content_id, -- \u6bcf\u4e2a\u9700\u8981\u7edf\u8ba1\u7684\u9875\u9762ID,\n-- l.uid_list as '\u8bbf\u95ee\u8fc7 \u6bcf\u4e2a\u9700\u8981\u7edf\u8ba1\u7684\u9875\u9762ID \u7684\u7528\u6237\u7ec4',\nt.content_id as t_content_id, -- \u8bbf\u95ee\u8fc7 \u6bcf\u4e2a\u9700\u8981\u7edf\u8ba1\u7684\u9875\u9762ID \u7684\u7528\u6237\u7ec4 \u4eff\u95ee\u8fc7\u7684\u9700\u8981\u7edf\u8ba1pv\u7684\u9875\u9762ID\ncount(t.uid) as pv\nfrom read_log t\njoin (\nselect content_id, group_concat(distinct uid, '') as uid_list\nfrom read_log\ngroup by content_id\n) l on find_in_set(t.uid, l.uid_list)\ngroup by l.content_id, t.content_id\norder by l.content_id, pv desc;<\/pre>\n
\u6ce8\u610f\uff1a<\/strong><\/p>\n
\u5982\u679c\u9700\u8981\u53ea\u53d6\u524d n \u6761\u6570\u636e\uff0c\u9700\u8981\u5bf9\u7ed3\u679c\u96c6\u8fdb\u884c\u8fdb\u4e00\u6b65\u7b5b\u9009\u3002<\/p>\n
\u4eca\u5929\u5173\u4e8e\u300a\u5982\u4f55\u901a\u8fc7 SQL \u67e5\u8be2\u627e\u51fa\u6bcf\u7bc7\u6587\u7ae0\u88ab\u54ea\u4e9b\u7528\u6237\u770b\u8fc7\uff0c\u8fd9\u4e9b\u7528\u6237\u8fd8\u770b\u4e86\u54ea\u4e9b\u5176\u4ed6\u6587\u7ae0\uff0c\u5e76\u7edf\u8ba1\u6d4f\u89c8\u6b21\u6570\u6700\u591a\u7684\u6587\u7ae0\uff1f\u300b\u7684\u5185\u5bb9\u5c31\u4ecb\u7ecd\u5230\u8fd9\u91cc\u4e86\uff0c\u662f\u4e0d\u662f\u5b66\u8d77\u6765\u4e00\u76ee\u4e86\u7136\uff01\u60f3\u8981\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u7684\u5185\u5bb9\u8bf7\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\uff01<\/p>\n
\n
\n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
\u5982\u4f55\u901a\u8fc7 SQL \u67e5\u8be2\u627e\u51fa\u6bcf\u7bc7\u6587...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-200252","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200252","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=200252"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200252\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=200252"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=200252"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=200252"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}