{"id":199657,"date":"2025-05-06T09:11:55","date_gmt":"2025-05-06T01:11:55","guid":{"rendered":"https:\/\/server.hk\/cnblog\/199657\/"},"modified":"2025-05-06T09:11:55","modified_gmt":"2025-05-06T01:11:55","slug":"%e5%ae%8c%e5%85%a8%e5%88%a0%e9%99%a4mysql%e6%95%b0%e6%8d%ae%e5%ba%93%e4%b8%ad%e7%9a%84%e6%95%b0%e6%8d%ae","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/199657\/","title":{"rendered":"\u5b8c\u5168\u5220\u9664mysql\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e"},"content":{"rendered":"

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

\u5b8c\u5168\u5220\u9664mysql\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e<\/h1>\n

\u4eb2\u7231\u7684\u7f16\u7a0b\u5b66\u4e60\u7231\u597d\u8005\uff0c\u5982\u679c\u4f60\u70b9\u5f00\u4e86\u8fd9\u7bc7\u6587\u7ae0\uff0c\u8bf4\u660e\u4f60\u5bf9\u300a\u5b8c\u5168\u5220\u9664mysql\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u300b\u5f88\u611f\u5174\u8da3\u3002\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u7ed9\u5927\u5bb6\u8be6\u7ec6\u89e3\u6790\u4e00\u4e0b\uff0c\u4e3b\u8981\u4ecb\u7ecd\u4e00\u4e0b\uff0c\u5e0c\u671b\u6240\u6709\u8ba4\u771f\u8bfb\u5b8c\u7684\u7ae5\u978b\u4eec\uff0c\u90fd\u6709\u5b9e\u8d28\u6027\u7684\u63d0\u9ad8\u3002<\/p>\n

MySQL\u5982\u4f55\u5f7b\u5e95\u5220\u9664\u6570\u636e\uff0c\u9700\u8981\u5177\u4f53\u4ee3\u7801\u793a\u4f8b<\/p>\n

\u6982\u8ff0\uff1a
MySQL\u662f\u4e00\u79cd\u5e38\u7528\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff0c\u5220\u9664\u6570\u636e\u662f\u6570\u636e\u5e93\u64cd\u4f5c\u4e2d\u5e38\u89c1\u7684\u9700\u6c42\u4e4b\u4e00\u3002\u4f46\u662f\u7b80\u5355\u7684DELETE\u8bed\u53e5\u53ea\u662f\u5c06\u6570\u636e\u6807\u8bb0\u4e3a\u5220\u9664\uff0c\u800c\u4e0d\u662f\u771f\u6b63\u7684\u5f7b\u5e95\u5220\u9664\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528MySQL\u5f7b\u5e95\u5220\u9664\u6570\u636e\uff0c\u5e76\u63d0\u4f9b\u5177\u4f53\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n

\u65b9\u6cd5\u4e00\uff1a\u4f7f\u7528DELETE\u8bed\u53e5<\/p>\n

    \n
  1. \u6267\u884cDELETE\u8bed\u53e5
    DELETE FROM table_name WHERE condition;
    \u8fd9\u662f\u5e38\u89c1\u7684\u5220\u9664\u6570\u636e\u7684\u8bed\u6cd5\u3002\u5176\u4e2d\uff0ctable_name\u662f\u8981\u5220\u9664\u6570\u636e\u7684\u8868\u540d\uff0ccondition\u662f\u5220\u9664\u7684\u6761\u4ef6\uff0c\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u9700\u6c42\u8fdb\u884c\u8bbe\u7f6e\u3002<\/li>\n
  2. \u67e5\u770b\u5220\u9664\u7ed3\u679c
    SELECT * FROM table_name;
    \u6267\u884c\u4e0a\u8ff0\u67e5\u8be2\u8bed\u53e5\uff0c\u5982\u679c\u5220\u9664\u6210\u529f\uff0c\u76f8\u5173\u7684\u6570\u636e\u5c06\u4e0d\u518d\u663e\u793a\u3002<\/li>\n<\/ol>\n

    \u5c3d\u7ba1\u4f7f\u7528DELETE\u8bed\u53e5\u53ef\u4ee5\u770b\u5230\u6570\u636e\u6ca1\u6709\u663e\u793a\u51fa\u6765\uff0c\u4f46\u5b9e\u9645\u4e0a\u6570\u636e\u5e76\u672a\u5b8c\u5168\u5220\u9664\u3002\u8fd9\u662f\u56e0\u4e3aMySQL\u5177\u6709\u4e8b\u52a1\u7684\u7279\u6027\uff0c\u73b0\u4ee3\u7684MySQL\u7248\u672c\u9ed8\u8ba4\u542f\u7528\u4e86\u4e8b\u52a1\u3002\u5728\u4e8b\u52a1\u4e2d\uff0c\u5f53DELETE\u8bed\u53e5\u6267\u884c\u540e\uff0c\u6570\u636e\u5e93\u5b9e\u9645\u4e0a\u5c06\u6570\u636e\u6807\u8bb0\u4e3a\u5df2\u5220\u9664\uff0c\u4f46\u6570\u636e\u5b9e\u9645\u4e0a\u5e76\u6ca1\u6709\u88ab\u7269\u7406\u5220\u9664\u3002<\/p>\n

    \u65b9\u6cd5\u4e8c\uff1a\u4f7f\u7528TRUNCATE\u8bed\u53e5<\/p>\n

      \n
    1. \u6267\u884cTRUNCATE\u8bed\u53e5
      TRUNCATE TABLE table_name;
      \u4f7f\u7528TRUNCATE\u8bed\u53e5\u53ef\u4ee5\u5f7b\u5e95\u5220\u9664\u6570\u636e\uff0c\u5c06\u8868\u4e2d\u7684\u6240\u6709\u6570\u636e\u6e05\u7a7a\u3002TRUNCATE\u8bed\u53e5\u6267\u884c\u540e\uff0c\u8868\u7684\u7ed3\u6784\u8fd8\u4f1a\u4fdd\u7559\u3002<\/li>\n
    2. \u67e5\u770b\u5220\u9664\u7ed3\u679c
      SELECT * FROM table_name;
      \u6267\u884c\u4e0a\u8ff0\u67e5\u8be2\u8bed\u53e5\uff0c\u5c06\u65e0\u6cd5\u663e\u793a\u4efb\u4f55\u6570\u636e\u3002<\/li>\n<\/ol>\n

      \u76f8\u8f83\u4e8eDELETE\u8bed\u53e5\uff0cTRUNCATE\u8bed\u53e5\u5bf9\u4e8e\u5f7b\u5e95\u5220\u9664\u6570\u636e\u66f4\u52a0\u6709\u6548\u3002\u5b83\u4f1a\u5c06\u6570\u636e\u4ece\u7269\u7406\u5c42\u9762\u4e0a\u5220\u9664\uff0c\u975e\u5e38\u9002\u7528\u4e8e\u9700\u8981\u624b\u52a8\u6e05\u7a7a\u8868\u4e2d\u6570\u636e\u7684\u573a\u666f\u3002\u7136\u800c\uff0cTRUNCATE\u8bed\u53e5\u65e0\u6cd5\u5220\u9664\u7279\u5b9a\u6761\u4ef6\u4e0b\u7684\u6570\u636e\uff0c\u53ea\u80fd\u5220\u9664\u6574\u4e2a\u8868\u7684\u6570\u636e\u3002<\/p>\n

      \u65b9\u6cd5\u4e09\uff1a\u4f7f\u7528DROP\u8bed\u53e5<\/p>\n

        \n
      1. \u6267\u884cDROP\u8bed\u53e5
        DROP TABLE table_name;
        DROP\u8bed\u53e5\u53ef\u4ee5\u5f7b\u5e95\u5220\u9664\u6574\u4e2a\u8868\uff0c\u5305\u62ec\u8868\u7684\u7ed3\u6784\u548c\u6570\u636e\u3002<\/li>\n
      2. \u67e5\u770b\u5220\u9664\u7ed3\u679c
        SELECT * FROM table_name;
        \u6267\u884c\u4e0a\u8ff0\u67e5\u8be2\u8bed\u53e5\uff0c\u5c06\u63d0\u793a\u8868\u4e0d\u5b58\u5728\u7684\u9519\u8bef\u3002<\/li>\n<\/ol>\n

        \u4f7f\u7528DROP\u8bed\u53e5\u9700\u8981\u614e\u91cd\uff0c\u56e0\u4e3a\u5b83\u4e0d\u4ec5\u4f1a\u5220\u9664\u6570\u636e\uff0c\u8fd8\u4f1a\u5220\u9664\u6574\u4e2a\u8868\u53ca\u5176\u7ed3\u6784\u3002\u5728\u4f7f\u7528DROP\u8bed\u53e5\u4e4b\u524d\uff0c\u8bf7\u52a1\u5fc5\u5907\u4efd\u91cd\u8981\u7684\u6570\u636e\u3002<\/p>\n

        \u7efc\u4e0a\u6240\u8ff0\uff0c\u4f7f\u7528DELETE\u8bed\u53e5\u3001TRUNCATE\u8bed\u53e5\u548cDROP\u8bed\u53e5\u5747\u53ef\u5b9e\u73b0\u5220\u9664\u6570\u636e\u7684\u6548\u679c\u3002\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u3002\u4e0b\u9762\u7ed9\u51fa\u4e00\u4e2a\u5177\u4f53\u7684\u793a\u4f8b\uff1a<\/p>\n

        \u793a\u4f8b\uff1a\u4f7f\u7528DELETE\u8bed\u53e5\u5220\u9664\u7279\u5b9a\u6761\u4ef6\u4e0b\u7684\u6570\u636e<\/p>\n

        DELETE FROM employees WHERE age > 30;
        \u8be5\u793a\u4f8b\u4e2d\uff0c\u5220\u9664\u4e86employees\u8868\u4e2d\u5e74\u9f84\u5927\u4e8e30\u7684\u5458\u5de5\u6570\u636e\u3002<\/p>\n

        \u603b\u7ed3\uff1a
        \u5220\u9664\u6570\u636e\u662f\u6570\u636e\u5e93\u64cd\u4f5c\u4e2d\u5e38\u89c1\u7684\u9700\u6c42\uff0cMySQL\u63d0\u4f9b\u4e86\u591a\u79cd\u65b9\u6cd5\u6765\u5b9e\u73b0\u5f7b\u5e95\u5220\u9664\u6570\u636e\u7684\u6548\u679c\u3002\u4f7f\u7528DELETE\u8bed\u53e5\u3001TRUNCATE\u8bed\u53e5\u548cDROP\u8bed\u53e5\u5747\u53ef\u5b9e\u73b0\u5220\u9664\u6570\u636e\u7684\u6548\u679c\u3002\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\uff0c\u5e76\u5728\u64cd\u4f5c\u524d\u5907\u4efd\u91cd\u8981\u7684\u6570\u636e\u3002<\/p>\n

        \u6587\u4e2d\u5173\u4e8eMySQL\u5220\u9664,\u5220\u9664\u6570\u636e,\u6570\u636e\u5f7b\u5e95\u5220\u9664\u7684\u77e5\u8bc6\u4ecb\u7ecd\uff0c\u5e0c\u671b\u5bf9\u4f60\u7684\u5b66\u4e60\u6709\u6240\u5e2e\u52a9\uff01\u82e5\u662f\u53d7\u76ca\u532a\u6d45\uff0c\u90a3\u5c31\u52a8\u52a8\u9f20\u6807\u6536\u85cf\u8fd9\u7bc7\u300a\u5b8c\u5168\u5220\u9664mysql\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u300b\u6587\u7ae0\u5427\uff0c\u4e5f\u53ef\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\u4e86\u89e3\u76f8\u5173\u6280\u672f\u6587\u7ae0\u3002<\/p>\n

        \n
        \n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"

        \u5b8c\u5168\u5220\u9664mysql\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e...<\/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-199657","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199657","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=199657"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199657\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=199657"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=199657"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=199657"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}