{"id":199686,"date":"2025-05-06T09:30:04","date_gmt":"2025-05-06T01:30:04","guid":{"rendered":"https:\/\/server.hk\/cnblog\/199686\/"},"modified":"2025-05-06T09:30:04","modified_gmt":"2025-05-06T01:30:04","slug":"%e6%89%a7%e8%a1%8cmysql%e6%9b%b4%e6%96%b0%e6%93%8d%e4%bd%9c","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/199686\/","title":{"rendered":"\u6267\u884cMySQL\u66f4\u65b0\u64cd\u4f5c"},"content":{"rendered":"

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

\u6267\u884cMySQL\u66f4\u65b0\u64cd\u4f5c<\/h1>\n

\u5927\u5bb6\u597d\uff0c\u6211\u4eec\u53c8\u89c1\u9762\u4e86\u554a~\u672c\u6587\u7684\u5185\u5bb9\u4e2d\u5c06\u4f1a\u6d89\u53ca\u5230\u7b49\u7b49\u3002\u5982\u679c\u4f60\u6b63\u5728\u5b66\u4e60\u76f8\u5173\u77e5\u8bc6\uff0c\u6b22\u8fce\u5173\u6ce8\u6211\uff0c\u4ee5\u540e\u4f1a\u7ed9\u5927\u5bb6\u5e26\u6765\u66f4\u591a\u76f8\u5173\u6587\u7ae0\uff0c\u5e0c\u671b\u6211\u4eec\u80fd\u4e00\u8d77\u8fdb\u6b65\uff01\u4e0b\u9762\u5c31\u5f00\u59cb\u672c\u6587\u7684\u6b63\u5f0f\u5185\u5bb9~<\/p>\n

\u6807\u9898\uff1aMySQL UPDATE\u8bed\u53e5\u7684\u4ee3\u7801\u793a\u4f8b<\/p>\n

\u5728MySQL\u6570\u636e\u5e93\u4e2d\uff0cUPDATE\u8bed\u53e5\u7528\u4e8e\u4fee\u6539\u5df2\u5b58\u5728\u7684\u6570\u636e\u8bb0\u5f55\u3002\u672c\u6587\u5c06\u9488\u5bf9UPDATE\u8bed\u53e5\u8fdb\u884c\u8be6\u7ec6\u8bf4\u660e\uff0c\u5e76\u7ed9\u51fa\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n

    \n
  1. UPDATE\u8bed\u53e5\u7684\u8bed\u6cd5\u7ed3\u6784\uff1a
    UPDATE table_name
    SET column1 = value1, column2 = value2, …
    WHERE condition;<\/li>\n
  2. \u4ee3\u7801\u793a\u4f8b\uff1a
    \u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u540d\u4e3a”users”\u7684\u6570\u636e\u8868\uff0c\u5176\u4e2d\u5305\u542b\u4ee5\u4e0b\u5b57\u6bb5\uff1a<\/li>\n
  3. id\uff1a\u7528\u6237ID\uff08\u4e3b\u952e\uff09<\/li>\n
  4. username\uff1a\u7528\u6237\u540d<\/li>\n
  5. email\uff1a\u7528\u6237\u90ae\u7bb1<\/li>\n
  6. age\uff1a\u5e74\u9f84<\/li>\n<\/ol>\n

    \u73b0\u5728\u6211\u4eec\u8981\u5c06ID\u4e3a1\u7684\u7528\u6237\u7684\u90ae\u7bb1\u4fee\u6539\u4e3a”test@gmail.com”\uff0c\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n

    UPDATE users
    SET email = ‘test@gmail.com’
    WHERE id = 1;<\/p>\n

    \u8fd9\u6761SQL\u8bed\u53e5\u5c06\u66f4\u65b0”users”\u8868\u4e2dID\u4e3a1\u7684\u8bb0\u5f55\u7684\u90ae\u7bb1\u5b57\u6bb5\u3002<\/p>\n

      \n
    1. \u6279\u91cf\u66f4\u65b0\u793a\u4f8b\uff1a
      \u5982\u679c\u6211\u4eec\u9700\u8981\u6279\u91cf\u66f4\u65b0\u591a\u6761\u8bb0\u5f55\uff0c\u53ef\u4ee5\u4f7f\u7528UPDATE\u8bed\u53e5\u7684IN\u5173\u952e\u5b57\u3002\u6bd4\u5982\uff0c\u6211\u4eec\u5c06\u5e74\u9f84\u5927\u4e8e18\u5c81\u7684\u7528\u6237\u7684\u90ae\u7bb1\u90fd\u4fee\u6539\u4e3a”test@gmail.com”\uff0c\u4ee3\u7801\u5982\u4e0b\uff1a<\/li>\n<\/ol>\n

      UPDATE users
      SET email = ‘test@gmail.com’
      WHERE age > 18;<\/p>\n

      \u8fd9\u6837\uff0c\u6240\u6709\u5e74\u9f84\u5927\u4e8e18\u5c81\u7684\u7528\u6237\u7684\u90ae\u7bb1\u5b57\u6bb5\u90fd\u4f1a\u88ab\u66f4\u65b0\u3002<\/p>\n

        \n
      1. \u66f4\u65b0\u591a\u4e2a\u5b57\u6bb5\u793a\u4f8b\uff1a
        \u5982\u679c\u6211\u4eec\u9700\u8981\u540c\u65f6\u66f4\u65b0\u591a\u4e2a\u5b57\u6bb5\uff0c\u53ea\u9700\u5728SET\u5b50\u53e5\u4e2d\u6dfb\u52a0\u76f8\u5e94\u7684\u5b57\u6bb5\u548c\u5bf9\u5e94\u7684\u503c\u5373\u53ef\u3002\u4f8b\u5982\uff0c\u6211\u4eec\u5c06ID\u4e3a2\u7684\u7528\u6237\u7684\u7528\u6237\u540d\u4fee\u6539\u4e3a”John”\uff0c\u90ae\u7bb1\u4fee\u6539\u4e3a”john@gmail.com”\uff0c\u4ee3\u7801\u5982\u4e0b\uff1a<\/li>\n<\/ol>\n

        UPDATE users
        SET username = ‘John’, email = ‘john@gmail.com’
        WHERE id = 2;<\/p>\n

        \u8fd9\u6761SQL\u8bed\u53e5\u5c06\u540c\u65f6\u66f4\u65b0ID\u4e3a2\u7684\u7528\u6237\u7684\u7528\u6237\u540d\u548c\u90ae\u7bb1\u5b57\u6bb5\u3002<\/p>\n

          \n
        1. \u6ce8\u610f\u4e8b\u9879\uff1a
          \u5728\u4f7f\u7528UPDATE\u8bed\u53e5\u65f6\uff0c\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u51e0\u70b9\uff1a<\/li>\n
        2. WHERE\u5b50\u53e5\u7528\u4e8e\u6307\u5b9a\u8981\u66f4\u65b0\u7684\u8bb0\u5f55\uff0c\u5982\u679c\u7701\u7565\u8be5\u5b50\u53e5\uff0c\u5c06\u4f1a\u66f4\u65b0\u6574\u4e2a\u8868\u7684\u6240\u6709\u8bb0\u5f55\u3002<\/li>\n
        3. SET\u5b50\u53e5\u7528\u4e8e\u6307\u5b9a\u8981\u66f4\u65b0\u7684\u5b57\u6bb5\u548c\u5bf9\u5e94\u7684\u65b0\u503c\u3002<\/li>\n
        4. \u53ef\u4ee5\u4f7f\u7528\u591a\u4e2a\u6761\u4ef6\u7ec4\u5408\u6765\u9650\u5236\u66f4\u65b0\u8303\u56f4\uff0c\u4f8b\u5982\u4f7f\u7528AND\u548cOR\u64cd\u4f5c\u7b26\u3002<\/li>\n
        5. \u5728\u66f4\u65b0\u6570\u636e\u65f6\uff0c\u8bf7\u786e\u4fdd\u63d0\u4f9b\u51c6\u786e\u7684\u6761\u4ef6\uff0c\u4ee5\u514d\u5f71\u54cd\u5230\u4e0d\u9700\u8981\u66f4\u65b0\u7684\u8bb0\u5f55\u3002<\/li>\n<\/ol>\n

          \u603b\u7ed3\uff1a
          \u672c\u6587\u901a\u8fc7\u7ed9\u51fa\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\uff0c\u8be6\u7ec6\u4ecb\u7ecd\u4e86MySQL\u4e2dUPDATE\u8bed\u53e5\u7684\u7528\u6cd5\u3002\u66f4\u65b0\u6570\u636e\u662f\u6570\u636e\u5e93\u4e2d\u5e38\u89c1\u7684\u64cd\u4f5c\u4e4b\u4e00\uff0c\u719f\u7ec3\u638c\u63e1UPDATE\u8bed\u53e5\u7684\u4f7f\u7528\u65b9\u6cd5\uff0c\u80fd\u591f\u65b9\u4fbf\u5730\u5bf9\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u8fdb\u884c\u4fee\u6539\u548c\u66f4\u65b0\u3002\u5e0c\u671b\u672c\u6587\u5bf9\u8bfb\u8005\u5728\u7f16\u5199MySQL UPDATE\u8bed\u53e5\u65f6\u6709\u6240\u5e2e\u52a9\u3002<\/p>\n

          \u6587\u4e2d\u5173\u4e8emysql,Update,\u8bed\u53e5\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\u6267\u884cMySQL\u66f4\u65b0\u64cd\u4f5c\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":"

          \u6267\u884cMySQL\u66f4\u65b0\u64cd\u4f5c \u5927\u5bb6\u597d\uff0c...<\/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-199686","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199686","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=199686"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199686\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=199686"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=199686"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=199686"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}