{"id":6767,"date":"2024-11-14T14:05:08","date_gmt":"2024-11-14T06:05:08","guid":{"rendered":"https:\/\/fwq.ai\/blog\/6767\/"},"modified":"2024-11-14T14:05:08","modified_gmt":"2024-11-14T06:05:08","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:\/\/fwq.ai\/blog\/6767\/","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":"

\"\u5982\u4f55\u901a\u8fc7<\/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
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\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
\u4ee5\u4e0a\u5c31\u662f\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\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4e00\u4e2a sql \u8bf7\u6559 \u95ee\u9898\uff1a \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 \u6b65\u9aa4\uff1a \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 \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 \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 \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 \u7b54\u6848\uff1a \u65b9\u6848 1\uff1a\u5f02\u6b65\u4efb\u52a1\u7edf\u8ba1 \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 \u65b9\u6848 2\uff1asql \u5b9e\u73b0 \u5982\u679c\u975e\u8981\u4f7f\u7528 sql \u5b9e\u73b0\uff0c\u53ef\u4ee5\u53c2\u8003\u4ee5\u4e0b\u4ee3\u7801\uff1a — \u9875\u9762\u8bbf\u95ee\u65e5\u5fd7\u8868 CREATE TABLE `read_log` ( `content_id` int, `uid` int ) — \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 select l.content_id as l_content_id, — \u6bcf\u4e2a\u9700\u8981\u7edf\u8ba1\u7684\u9875\u9762ID, — l.uid_list as ‘\u8bbf\u95ee\u8fc7 \u6bcf\u4e2a\u9700\u8981\u7edf\u8ba1\u7684\u9875\u9762ID \u7684\u7528\u6237\u7ec4’, t.content_id as t_content_id, — \u8bbf\u95ee\u8fc7 \u6bcf\u4e2a\u9700\u8981\u7edf\u8ba1\u7684\u9875\u9762ID \u7684\u7528\u6237\u7ec4 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-6767","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/6767","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=6767"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/6767\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=6767"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=6767"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=6767"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}