{"id":200308,"date":"2025-05-06T09:17:47","date_gmt":"2025-05-06T01:17:47","guid":{"rendered":"https:\/\/server.hk\/cnblog\/200308\/"},"modified":"2025-05-06T09:17:47","modified_gmt":"2025-05-06T01:17:47","slug":"sql%e8%af%ad%e5%8f%a5%e4%b8%ad%e5%8f%82%e6%95%b0%e5%8c%96%e6%9f%a5%e8%af%a2%e7%9a%84%e5%86%99%e6%b3%95%ef%bc%9a%e5%a6%82%e4%bd%95%e6%ad%a3%e7%a1%ae%e4%bc%a0%e9%80%92%e5%8f%82%e6%95%b0%e5%b9%b6","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/200308\/","title":{"rendered":"SQL\u8bed\u53e5\u4e2d\u53c2\u6570\u5316\u67e5\u8be2\u7684\u5199\u6cd5\uff1a\u5982\u4f55\u6b63\u786e\u4f20\u9012\u53c2\u6570\u5e76\u907f\u514d\u5b50\u67e5\u8be2\u4e2d\u7684\u9519\u8bef\uff1f"},"content":{"rendered":"

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

SQL\u8bed\u53e5\u4e2d\u53c2\u6570\u5316\u67e5\u8be2\u7684\u5199\u6cd5\uff1a\u5982\u4f55\u6b63\u786e\u4f20\u9012\u53c2\u6570\u5e76\u907f\u514d\u5b50\u67e5\u8be2\u4e2d\u7684\u9519\u8bef\uff1f<\/h1>\n

\u201c\u7eb5\u6709\u75be\u98ce\u6765\uff0c\u4eba\u751f\u4e0d\u8a00\u5f03\u201d\uff0c\u8fd9\u53e5\u8bdd\u9001\u7ed9\u6b63\u5728\u5b66\u4e60\u7684\u670b\u53cb\u4eec\uff0c\u4e5f\u5e0c\u671b\u5728\u9605\u8bfb\u672c\u6587\u540e\uff0c\u80fd\u591f\u771f\u7684\u5e2e\u52a9\u5230\u5927\u5bb6\u3002\u6211\u4e5f\u4f1a\u5728\u540e\u7eed\u7684\u6587\u7ae0\u4e2d\uff0c\u9646\u7eed\u66f4\u65b0\u76f8\u5173\u7684\u6280\u672f\u6587\u7ae0\uff0c\u6709\u597d\u7684\u5efa\u8bae\u6b22\u8fce\u5927\u5bb6\u5728\u8bc4\u8bba\u7559\u8a00\uff0c\u975e\u5e38\u611f\u8c22\uff01<\/p>\n

<\/p>\n

sql\u8bed\u53e5\u4e2d\u53c2\u6570\u5316\u67e5\u8be2\u7684\u5199\u6cd5<\/strong><\/p>\n

\u5728sql\u8bed\u53e5\u4e2d\u4f20\u9012\u53c2\u6570\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u5b89\u5168\u6027\u3002\u4ee5\u4e0b\u793a\u5217\u4e00\u4e2a\u5e26\u6709\u53c2\u6570\u7684sql\u8bed\u53e5\uff1a<\/p>\n

update post set content=(select group_concat(id)ids from article where pid = ?) where id < 720<\/pre>\n
\u5176\u4e2d\uff0c\u95ee\u53f7 (?) \u8868\u793a\u4e00\u4e2a\u53c2\u6570\u5360\u4f4d\u7b26\u3002\u5728\u6267\u884c\u67e5\u8be2\u65f6\uff0c\u9700\u8981\u5c06\u53c2\u6570\u503c\u4f20\u9012\u7ed9\u5b83\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bpython\u4ee3\u7801\u6765\u6267\u884c\u6b64\u67e5\u8be2\uff1a<\/p>\n
import mysqldb\n\nconn = mysqldb.connect(host=\"localhost\", user=\"root\", password=\"\", db=\"test\")\ncursor = conn.cursor()\ncursor.execute(\"update post set content=(select group_concat(id)ids from article where pid = ?) where id < 720\", (18,))\nconn.commit()\ncursor.close()\nconn.close()<\/pre>\n
\u5728\u4e0a\u8ff0\u793a\u4f8b\u4e2d\uff0c\u53c2\u6570\u503c 18 \u88ab\u4f20\u9012\u7ed9\u4e86\u67e5\u8be2\u3002\u4e3a\u4e86\u4f7f\u53c2\u6570\u5316\u67e5\u8be2\u6b63\u5e38\u5de5\u4f5c\uff0c\u5fc5\u987b\u786e\u4fdd\u53c2\u6570\u7684\u987a\u5e8f\u4e0e\u5360\u4f4d\u7b26 (?) \u7684\u987a\u5e8f\u76f8\u5339\u914d\u3002\u5b50\u67e5\u8be2\u4e2d\u7684\u53c2\u6570\u4e5f\u5e94\u4f7f\u7528\u5360\u4f4d\u7b26 (?) \u5e76\u6309\u7167\u6b63\u786e\u7684\u987a\u5e8f\u4f20\u9012\u3002\u56e0\u6b64\uff0c\u4e0a\u8ff0\u67e5\u8be2\u53ef\u4ee5\u4fee\u6539\u4e3a\uff1a<\/p>\n
UPDATE post a SET content=(SELECT group_concat(id)ids FROM article WHERE pid = a.id) WHERE a.id < 720<\/pre>\n
\u8be5\u5b50\u67e5\u8be2\u4e2d\u7684\u5360\u4f4d\u7b26 (?) \u5df2\u88ab a.id \u66ff\u6362\uff0c\u56e0\u4e3a\u5b83\u5f15\u7528\u4e86\u4e3b\u8868 (post \u8868) \u7684 id \u5217\u3002<\/p>\n
\u672c\u7bc7\u5173\u4e8e\u300aSQL\u8bed\u53e5\u4e2d\u53c2\u6570\u5316\u67e5\u8be2\u7684\u5199\u6cd5\uff1a\u5982\u4f55\u6b63\u786e\u4f20\u9012\u53c2\u6570\u5e76\u907f\u514d\u5b50\u67e5\u8be2\u4e2d\u7684\u9519\u8bef\uff1f\u300b\u7684\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\u5566\uff0c\u4f46\u662f\u5b66\u65e0\u6b62\u5883\uff0c\u60f3\u8981\u4e86\u89e3\u5b66\u4e60\u66f4\u591a\u5173\u4e8e\u6570\u636e\u5e93\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u8bf7\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\uff01<\/p>\n
\n
\n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
SQL\u8bed\u53e5\u4e2d\u53c2\u6570\u5316\u67e5\u8be2\u7684\u5199\u6cd5\uff1a\u5982...<\/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-200308","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200308","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=200308"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200308\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=200308"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=200308"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=200308"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}