{"id":199631,"date":"2025-05-06T08:55:45","date_gmt":"2025-05-06T00:55:45","guid":{"rendered":"https:\/\/server.hk\/cnblog\/199631\/"},"modified":"2025-05-06T08:55:45","modified_gmt":"2025-05-06T00:55:45","slug":"%e4%bc%98%e5%8c%96mysql%e9%94%81%e7%9a%84%e5%b9%b6%e5%8f%91%e6%8e%a7%e5%88%b6%e4%bb%a5%e6%8f%90%e5%8d%87%e6%80%a7%e8%83%bd","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/199631\/","title":{"rendered":"\u4f18\u5316MySQL\u9501\u7684\u5e76\u53d1\u63a7\u5236\u4ee5\u63d0\u5347\u6027\u80fd"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>\u4f18\u5316MySQL\u9501\u7684\u5e76\u53d1\u63a7\u5236\u4ee5\u63d0\u5347\u6027\u80fd<\/h1>\n<p>\u4f60\u5728\u5b66\u4e60\u76f8\u5173\u7684\u77e5\u8bc6\u5417\uff1f\u672c\u6587\uff0c\u4e3b\u8981\u4ecb\u7ecd\u7684\u5185\u5bb9\u5c31\u6d89\u53ca\u5230\uff0c\u5982\u679c\u4f60\u60f3\u63d0\u5347\u81ea\u5df1\u7684\u5f00\u53d1\u80fd\u529b\uff0c\u5c31\u4e0d\u8981\u9519\u8fc7\u8fd9\u7bc7\u6587\u7ae0\uff0c\u5927\u5bb6\u8981\u77e5\u9053\u7f16\u7a0b\u7406\u8bba\u57fa\u7840\u548c\u5b9e\u6218\u64cd\u4f5c\u90fd\u662f\u4e0d\u53ef\u6216\u7f3a\u7684\u54e6\uff01<\/p>\n<p>MySQL \u9501\u7684\u5e76\u53d1\u63a7\u5236\u4e0e\u6027\u80fd\u4f18\u5316\uff0c\u9700\u8981\u5177\u4f53\u4ee3\u7801\u793a\u4f8b<\/p>\n<p>\u6458\u8981\uff1a<br \/>\u5728MySQL\u6570\u636e\u5e93\u4e2d\uff0c\u9501\u7684\u5e76\u53d1\u63a7\u5236\u662f\u975e\u5e38\u91cd\u8981\u7684\uff0c\u5b83\u80fd\u591f\u786e\u4fdd\u6570\u636e\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u3002\u672c\u6587\u5c06\u8be6\u7ec6\u4ecb\u7ecdMySQL\u4e2d\u9501\u7684\u79cd\u7c7b\u548c\u4f7f\u7528\u573a\u666f\uff0c\u4ee5\u53ca\u5982\u4f55\u4f18\u5316\u9501\u7684\u6027\u80fd\u3002\u540c\u65f6\uff0c\u8fd8\u4f1a\u63d0\u4f9b\u4e00\u4e9b\u5b9e\u9645\u7684\u4ee3\u7801\u793a\u4f8b\uff0c\u4ee5\u5e2e\u52a9\u8bfb\u8005\u66f4\u597d\u5730\u7406\u89e3\u548c\u5e94\u7528\u8fd9\u4e9b\u6280\u672f\u3002<\/p>\n<p>\u5f15\u8a00\uff1a<br \/>\u5728\u6570\u636e\u5e93\u64cd\u4f5c\u4e2d\uff0c\u540c\u65f6\u6709\u591a\u4e2a\u7528\u6237\u8fdb\u884c\u8bfb\u5199\u64cd\u4f5c\u662f\u975e\u5e38\u5e38\u89c1\u7684\u60c5\u51b5\u3002\u4e3a\u4e86\u4fdd\u8bc1\u6570\u636e\u7684\u4e00\u81f4\u6027\uff0c\u907f\u514d\u51fa\u73b0\u4e22\u5931\u3001\u9519\u8bef\u6216\u6df7\u4e71\u7684\u6570\u636e\uff0c\u6570\u636e\u5e93\u4e2d\u5f15\u5165\u4e86\u9501\u673a\u5236\u3002\u9501\u673a\u5236\u901a\u8fc7\u5bf9\u6570\u636e\u64cd\u4f5c\u8fdb\u884c\u63a7\u5236\uff0c\u4fdd\u8bc1\u591a\u4e2a\u7528\u6237\u64cd\u4f5c\u6570\u636e\u65f6\u7684\u4e92\u65a5\u6027\u548c\u53ef\u89c1\u6027\u3002\u7136\u800c\uff0c\u8fc7\u591a\u7684\u9501\u64cd\u4f5c\u4f1a\u9020\u6210\u6570\u636e\u5e93\u7684\u6027\u80fd\u95ee\u9898\uff0c\u56e0\u6b64\uff0c\u6211\u4eec\u9700\u8981\u5bf9\u9501\u8fdb\u884c\u4f18\u5316\u3002<\/p>\n<p>\u4e00\u3001MySQL\u4e2d\u7684\u9501\u7c7b\u578b<\/p>\n<ol>\n<li>\u4e50\u89c2\u9501<br \/>\u4e50\u89c2\u9501\u662f\u4e00\u79cd\u4e0d\u52a0\u9501\u7684\u673a\u5236\uff0c\u5b83\u901a\u8fc7\u5728\u6570\u636e\u64cd\u4f5c\u524d\u68c0\u67e5\u6570\u636e\u7684\u7248\u672c\u53f7\u6216\u65f6\u95f4\u6233\uff0c\u6765\u5224\u65ad\u6570\u636e\u662f\u5426\u53d1\u751f\u4e86\u53d8\u5316\u3002\u5982\u679c\u6570\u636e\u6ca1\u6709\u53d1\u751f\u53d8\u5316\uff0c\u5219\u64cd\u4f5c\u53ef\u4ee5\u7ee7\u7eed\u8fdb\u884c\uff1b\u5982\u679c\u6570\u636e\u53d1\u751f\u4e86\u53d8\u5316\uff0c\u5219\u64cd\u4f5c\u4f1a\u88ab\u56de\u6eda\u3002\u4e50\u89c2\u9501\u9002\u7528\u4e8e\u8bfb\u591a\u5199\u5c11\u7684\u573a\u666f\uff0c\u5e76\u4e14\u5bf9\u4e8e\u6570\u636e\u51b2\u7a81\u4e0d\u9891\u7e41\u7684\u60c5\u51b5\u6548\u679c\u66f4\u597d\u3002<\/li>\n<li>\u60b2\u89c2\u9501<br \/>\u60b2\u89c2\u9501\u662f\u4e00\u79cd\u52a0\u9501\u7684\u673a\u5236\uff0c\u5b83\u5047\u8bbe\u6570\u636e\u4f1a\u88ab\u5e76\u53d1\u64cd\u4f5c\uff0c\u56e0\u6b64\u5728\u64cd\u4f5c\u6570\u636e\u4e4b\u524d\uff0c\u4f1a\u5148\u52a0\u9501\uff0c\u4fdd\u8bc1\u64cd\u4f5c\u7684\u72ec\u5360\u6027\u3002\u5728MySQL\u4e2d\uff0c\u5e38\u7528\u7684\u60b2\u89c2\u9501\u5305\u62ec\u884c\u7ea7\u9501\u548c\u8868\u7ea7\u9501\u3002<\/li>\n<\/ol>\n<p>2.1 \u884c\u7ea7\u9501<br \/>\u884c\u7ea7\u9501\u662f\u5bf9\u4e00\u884c\u6570\u636e\u8fdb\u884c\u52a0\u9501\uff0c\u5176\u4ed6\u4e8b\u52a1\u65e0\u6cd5\u5bf9\u8be5\u884c\u6570\u636e\u8fdb\u884c\u4fee\u6539\u6216\u5220\u9664\u64cd\u4f5c\u3002MySQL\u4e2d\uff0c\u884c\u7ea7\u9501\u662f\u901a\u8fc7InnoDB\u5b58\u50a8\u5f15\u64ce\u5b9e\u73b0\u7684\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u884c\u7ea7\u9501\u53ea\u5728\u4e8b\u52a1\u64cd\u4f5c\u4e2d\u6709\u6548\u3002<\/p>\n<p>2.2 \u8868\u7ea7\u9501<br \/>\u8868\u7ea7\u9501\u662f\u5bf9\u6574\u4e2a\u8868\u8fdb\u884c\u52a0\u9501\uff0c\u5176\u4ed6\u4e8b\u52a1\u65e0\u6cd5\u5bf9\u8be5\u8868\u8fdb\u884c\u4efb\u4f55\u8bfb\u5199\u64cd\u4f5c\u3002MySQL\u4e2d\uff0c\u8868\u7ea7\u9501\u662f\u901a\u8fc7MyISAM\u5b58\u50a8\u5f15\u64ce\u5b9e\u73b0\u7684\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u8868\u7ea7\u9501\u4f1a\u9020\u6210\u5927\u91cf\u7684\u963b\u585e\uff0c\u4e0d\u9002\u5408\u9ad8\u5e76\u53d1\u7684\u573a\u666f\u3002<\/p>\n<p>\u4e8c\u3001MySQL\u9501\u7684\u4f7f\u7528\u573a\u666f<\/p>\n<ol>\n<li>\u5e76\u53d1\u8bfb\u5199\u6570\u636e<br \/>\u5f53\u6709\u591a\u4e2a\u7528\u6237\u540c\u65f6\u5bf9\u540c\u4e00\u884c\u6570\u636e\u8fdb\u884c\u8bfb\u5199\u64cd\u4f5c\u65f6\uff0c\u9700\u8981\u4f7f\u7528\u884c\u7ea7\u9501\u6765\u4fdd\u8bc1\u64cd\u4f5c\u7684\u4e92\u65a5\u6027\u3002<\/li>\n<\/ol>\n<p>\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre>-- \u4e8b\u52a11\nSTART TRANSACTION;\nSELECT * FROM table_name WHERE id = 1 FOR UPDATE;\nUPDATE table_name SET column_name = value WHERE id = 1;\nCOMMIT;\n\n-- \u4e8b\u52a12\nSTART TRANSACTION;\nSELECT * FROM table_name WHERE id = 1 FOR UPDATE;\nUPDATE table_name SET column_name = value WHERE id = 1;\nCOMMIT;<\/pre>\n<ol>\n<li>\u63d2\u5165\u552f\u4e00\u6570\u636e<br \/>\u5f53\u9700\u8981\u63d2\u5165\u4e00\u6761\u552f\u4e00\u6570\u636e\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e50\u89c2\u9501\u6765\u5224\u65ad\u6570\u636e\u662f\u5426\u5df2\u7ecf\u5b58\u5728\u3002<\/li>\n<\/ol>\n<p>\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre>-- \u4e8b\u52a11\nSTART TRANSACTION;\nSELECT * FROM table_name WHERE unique_column = value;\nIF EXISTS (SELECT * FROM table_name WHERE unique_column = value) THEN\n    ROLLBACK;\nELSE\n    INSERT INTO table_name (unique_column, other_column) VALUES (value, other_value);\n    COMMIT;\nEND IF;\n\n-- \u4e8b\u52a12\nSTART TRANSACTION;\nSELECT * FROM table_name WHERE unique_column = value;\nIF EXISTS (SELECT * FROM table_name WHERE unique_column = value) THEN\n    ROLLBACK;\nELSE\n    INSERT INTO table_name (unique_column, other_column) VALUES (value, other_value);\n    COMMIT;\nEND IF;<\/pre>\n<p>\u4e09\u3001MySQL\u9501\u7684\u6027\u80fd\u4f18\u5316<\/p>\n<ol>\n<li>\u51cf\u5c11\u9501\u7684\u7c92\u5ea6<br \/>\u5728\u4f7f\u7528\u60b2\u89c2\u9501\u65f6\uff0c\u5c3d\u91cf\u4f7f\u7528\u884c\u7ea7\u9501\u800c\u4e0d\u662f\u8868\u7ea7\u9501\uff0c\u8fd9\u6837\u53ef\u4ee5\u51cf\u5c11\u9501\u7684\u7c92\u5ea6\uff0c\u63d0\u5347\u5e76\u53d1\u6027\u80fd\u3002<\/li>\n<li>\u7f29\u77ed\u9501\u7684\u6301\u6709\u65f6\u95f4<br \/>\u5c3d\u91cf\u7f29\u77ed\u4e8b\u52a1\u4e2d\u5bf9\u6570\u636e\u7684\u64cd\u4f5c\u65f6\u95f4\uff0c\u51cf\u5c11\u9501\u7684\u6301\u6709\u65f6\u95f4\uff0c\u964d\u4f4e\u9501\u7684\u7ade\u4e89\u3002<\/li>\n<li>\u9002\u5f53\u8c03\u6574\u4e8b\u52a1\u9694\u79bb\u7ea7\u522b<br \/>\u5728MySQL\u4e2d\uff0c\u6709\u591a\u4e2a\u4e8b\u52a1\u9694\u79bb\u7ea7\u522b\u53ef\u4f9b\u9009\u62e9\u3002\u9009\u62e9\u5408\u9002\u7684\u9694\u79bb\u7ea7\u522b\u53ef\u4ee5\u51cf\u5c11\u9501\u7684\u4f7f\u7528\uff0c\u63d0\u5347\u6027\u80fd\u3002<\/li>\n<\/ol>\n<p>\u7ed3\u675f\u8bed\uff1a<br \/>MySQL\u4e2d\u9501\u7684\u5e76\u53d1\u63a7\u5236\u662f\u975e\u5e38\u91cd\u8981\u7684\uff0c\u5b83\u80fd\u591f\u4fdd\u8bc1\u6570\u636e\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u3002\u672c\u6587\u4ecb\u7ecd\u4e86MySQL\u4e2d\u7684\u9501\u7c7b\u578b\u548c\u4f7f\u7528\u573a\u666f\uff0c\u5e76\u63d0\u4f9b\u4e86\u4e00\u4e9b\u5b9e\u9645\u7684\u4ee3\u7801\u793a\u4f8b\u3002\u540c\u65f6\uff0c\u5bf9\u4e8e\u9501\u7684\u6027\u80fd\u4f18\u5316\u4e5f\u7ed9\u51fa\u4e86\u4e00\u4e9b\u5efa\u8bae\u3002\u5e0c\u671b\u672c\u6587\u5bf9\u8bfb\u8005\u5728MySQL\u6570\u636e\u5e93\u4e2d\u4f7f\u7528\u9501\u548c\u8fdb\u884c\u6027\u80fd\u4f18\u5316\u65b9\u9762\u6709\u6240\u5e2e\u52a9\u3002<\/p>\n<p>\u597d\u4e86\uff0c\u672c\u6587\u5230\u6b64\u7ed3\u675f\uff0c\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u300a\u4f18\u5316MySQL\u9501\u7684\u5e76\u53d1\u63a7\u5236\u4ee5\u63d0\u5347\u6027\u80fd\u300b\uff0c\u5e0c\u671b\u672c\u6587\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff01\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\uff0c\u7ed9\u5927\u5bb6\u5206\u4eab\u66f4\u591a\u6570\u636e\u5e93\u77e5\u8bc6\uff01<\/p>\n<dl>\n<dt>\n 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