{"id":6794,"date":"2024-11-14T14:02:58","date_gmt":"2024-11-14T06:02:58","guid":{"rendered":"https:\/\/fwq.ai\/blog\/6794\/"},"modified":"2024-11-14T14:02:58","modified_gmt":"2024-11-14T06:02:58","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8-sql-%e6%9f%a5%e8%af%a2%e6%89%be%e5%87%ba%e5%93%aa%e4%ba%9b%e7%94%a8%e6%88%b7%e9%98%85%e8%af%bb%e4%ba%86%e7%89%b9%e5%ae%9a%e6%96%87%e7%ab%a0%e4%bb%a5%e5%8f%8a","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/6794\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528 SQL \u67e5\u8be2\u627e\u51fa\u54ea\u4e9b\u7528\u6237\u9605\u8bfb\u4e86\u7279\u5b9a\u6587\u7ae0\u4ee5\u53ca\u8fd9\u4e9b\u7528\u6237\u6700\u5e38\u6d4f\u89c8\u7684\u5176\u5b83\u6587\u7ae0\uff1f"},"content":{"rendered":"

\"\u5982\u4f55\u4f7f\u7528<\/p>\n

\u4e00\u4e2a sql \u54a8\u8be2<\/strong><\/p>\n

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

\u5982\u4f55\u7f16\u5199 sql \u67e5\u8be2\uff0c\u4ee5\u786e\u5b9a\u54ea\u4e9b\u7528\u6237\u67e5\u770b\u4e86\u7279\u5b9a\u6587\u7ae0\uff0c\u4ee5\u53ca\u8fd9\u4e9b\u7528\u6237\u67e5\u770b\u8fc7\u7684\u5176\u4ed6\u6700\u5e38\u6d4f\u89c8\u7684\u6587\u7ae0\uff1f<\/p>\n

\u80cc\u666f\uff1a<\/strong><\/p>\n

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    \n
  1. \u8ba1\u7b97\u6bcf\u7bc7\u6587\u7ae0\u88ab\u54ea\u4e9b\u7528\u6237\u67e5\u770b\u3002<\/li>\n
  2. \u627e\u51fa\u8fd9\u4e9b\u7528\u6237\u6d4f\u89c8\u8fc7\u7684\u5176\u4ed6\u6587\u7ae0\u4e2d\u6700\u5e38\u6d4f\u89c8\u7684\u51e0\u7bc7\u6587\u7ae0\u3002<\/li>\n
  3. \u6309\u6d4f\u89c8\u6b21\u6570\u964d\u5e8f\u7ed3\u679c\u3002<\/li>\n<\/ol>\n

    \u89e3\u51b3\u65b9\u6848\uff1a<\/strong><\/p>\n

    \u65b9\u6cd5 1\uff1a\u5f02\u6b65\u4efb\u52a1<\/strong><\/p>\n

    \u5bf9\u4e8e\u5927\u91cf\u6570\u636e\uff0c\u4f7f\u7528\u5f02\u6b65\u4efb\u52a1\u5b9a\u65f6\u7edf\u8ba1\u6bcf\u4e2a\u6587\u7ae0\u5173\u8054\u6587\u7ae0\u7684\u6d4f\u89c8\u6b21\u6570\u662f\u4e00\u4e2a\u66f4\u597d\u7684\u9009\u62e9\u3002\u8fd9\u53ef\u4ee5\u907f\u514d\u8fc7\u5ea6\u52a0\u8f7d\u6570\u636e\u5e93\u3002<\/p>\n

    \u65b9\u6cd5 2\uff1asql \u67e5\u8be2<\/strong><\/p>\n

    \u5982\u679c\u5fc5\u987b\u4f7f\u7528 sql \u4e00\u6b21\u6027\u89e3\u51b3\u6240\u6709\u95ee\u9898\uff0c\u53ef\u4ee5\u4f7f\u7528\u5982\u4e0b\u67e5\u8be2\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\n  l.content_id AS l_content_id, -- \u6bcf\u4e2a\u9700\u8981\u7edf\u8ba1\u7684\u9875\u9762ID,\n  --      l.uid_list    l.uid_list AS '\u8bbf\u95ee\u8fc7 \u6bcf\u4e2a\u9700\u8981\u7edf\u8ba1\u7684\u9875\u9762ID \u7684\u7528\u6237\u7ec4',\n  t.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\n  COUNT(t.uid) AS pv\nFROM read_log t\nJOIN (\n  SELECT\n    content_id,\n    GROUP_CONCAT(DISTINCT uid, '') AS uid_list\n  FROM read_log\n  GROUP BY\n    content_id\n) l\nON FIND_IN_SET(t.uid, l.uid_list)\nGROUP BY\n  l.content_id,\n  t.content_id\nORDER BY\n  l.content_id,\n  pv DESC;<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u6ce8\u610f\uff1a<\/strong>\u5982\u679c\u9700\u8981\u5728\u6392\u540d\u540e\u53ea\u83b7\u53d6\u524d n \u6761\u6570\u636e\uff0c\u8bf7\u4f7f\u7528\u989d\u5916\u7684\u5d4c\u5957\u67e5\u8be2\u3002<\/p>\n
    \u4ee5\u4e0a\u5c31\u662f\u5982\u4f55\u4f7f\u7528 SQL \u67e5\u8be2\u627e\u51fa\u54ea\u4e9b\u7528\u6237\u9605\u8bfb\u4e86\u7279\u5b9a\u6587\u7ae0\u4ee5\u53ca\u8fd9\u4e9b\u7528\u6237\u6700\u5e38\u6d4f\u89c8\u7684\u5176\u5b83\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 \u54a8\u8be2 \u95ee\u9898\uff1a \u5982\u4f55\u7f16\u5199 sql \u67e5\u8be2\uff0c\u4ee5\u786e\u5b9a\u54ea\u4e9b\u7528\u6237\u67e5\u770b\u4e86\u7279\u5b9a\u6587\u7ae0\uff0c\u4ee5\u53ca\u8fd9\u4e9b\u7528\u6237\u67e5\u770b\u8fc7\u7684\u5176\u4ed6\u6700\u5e38\u6d4f\u89c8\u7684\u6587\u7ae0\uff1f \u80cc\u666f\uff1a \u5b58\u5728\u4e00\u5f20\u8bb0\u5f55\u6bcf\u4e2a\u7528\u6237\u6d4f\u89c8\u7684\u6587\u7ae0\uff08\u542b id\uff09\u7684\u8868\u683c\u3002\u9700\u6c42\u5982\u4e0b\uff1a \u8ba1\u7b97\u6bcf\u7bc7\u6587\u7ae0\u88ab\u54ea\u4e9b\u7528\u6237\u67e5\u770b\u3002 \u627e\u51fa\u8fd9\u4e9b\u7528\u6237\u6d4f\u89c8\u8fc7\u7684\u5176\u4ed6\u6587\u7ae0\u4e2d\u6700\u5e38\u6d4f\u89c8\u7684\u51e0\u7bc7\u6587\u7ae0\u3002 \u6309\u6d4f\u89c8\u6b21\u6570\u964d\u5e8f\u7ed3\u679c\u3002 \u89e3\u51b3\u65b9\u6848\uff1a \u65b9\u6cd5 1\uff1a\u5f02\u6b65\u4efb\u52a1 \u5bf9\u4e8e\u5927\u91cf\u6570\u636e\uff0c\u4f7f\u7528\u5f02\u6b65\u4efb\u52a1\u5b9a\u65f6\u7edf\u8ba1\u6bcf\u4e2a\u6587\u7ae0\u5173\u8054\u6587\u7ae0\u7684\u6d4f\u89c8\u6b21\u6570\u662f\u4e00\u4e2a\u66f4\u597d\u7684\u9009\u62e9\u3002\u8fd9\u53ef\u4ee5\u907f\u514d\u8fc7\u5ea6\u52a0\u8f7d\u6570\u636e\u5e93\u3002 \u65b9\u6cd5 2\uff1asql \u67e5\u8be2 \u5982\u679c\u5fc5\u987b\u4f7f\u7528 sql \u4e00\u6b21\u6027\u89e3\u51b3\u6240\u6709\u95ee\u9898\uff0c\u53ef\u4ee5\u4f7f\u7528\u5982\u4e0b\u67e5\u8be2\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 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 […]<\/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-6794","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/6794","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=6794"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/6794\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=6794"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=6794"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=6794"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}