{"id":43422,"date":"2024-12-01T10:37:36","date_gmt":"2024-12-01T02:37:36","guid":{"rendered":"https:\/\/fwq.ai\/blog\/43422\/"},"modified":"2024-12-01T10:37:36","modified_gmt":"2024-12-01T02:37:36","slug":"%e5%88%86%e6%9e%90mysql%e9%94%81%e7%9a%84%e4%bd%bf%e7%94%a8%e5%9c%ba%e6%99%af","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/43422\/","title":{"rendered":"\u5206\u6790MySQL\u9501\u7684\u4f7f\u7528\u573a\u666f"},"content":{"rendered":"

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

\u5206\u6790MySQL\u9501\u7684\u4f7f\u7528\u573a\u666f<\/h1>\n

IT\u884c\u4e1a\u76f8\u5bf9\u4e8e\u4e00\u822c\u4f20\u7edf\u884c\u4e1a\uff0c\u53d1\u5c55\u66f4\u65b0\u901f\u5ea6\u66f4\u5feb\uff0c\u4e00\u65e6\u505c\u6b62\u4e86\u5b66\u4e60\uff0c\u5f88\u5feb\u5c31\u4f1a\u88ab\u884c\u4e1a\u6240\u6dd8\u6c70\u3002\u6240\u4ee5\u6211\u4eec\u9700\u8981\u8e0f\u8e0f\u5b9e\u5b9e\u7684\u4e0d\u65ad\u5b66\u4e60\uff0c\u7cbe\u8fdb\u81ea\u5df1\u7684\u6280\u672f\uff0c\u5c24\u5176\u662f\u521d\u5b66\u8005\u3002\u4eca\u5929\u7c73\u4e91\u7ed9\u5927\u5bb6\u6574\u7406\u4e86\u300a\u5206\u6790MySQL\u9501\u7684\u4f7f\u7528\u573a\u666f\u300b\uff0c\u804a\u804a\uff0c\u6211\u4eec\u4e00\u8d77\u6765\u770b\u770b\u5427\uff01<\/p>\n

MySQL \u9501\u7684\u5e94\u7528\u573a\u666f\u5206\u6790<\/p>\n

\u5728\u5f00\u53d1\u5e94\u7528\u7a0b\u5e8f\u65f6\uff0c\u5e38\u5e38\u9700\u8981\u5bf9\u6570\u636e\u5e93\u8fdb\u884c\u8bfb\u53d6\u548c\u5199\u5165\u64cd\u4f5c\u3002\u7136\u800c\uff0c\u5f53\u591a\u4e2a\u7528\u6237\u540c\u65f6\u5bf9\u6570\u636e\u5e93\u8fdb\u884c\u64cd\u4f5c\u65f6\uff0c\u5c31\u4f1a\u51fa\u73b0\u5e76\u53d1\u8bbf\u95ee\u7684\u95ee\u9898\u3002\u4e3a\u4e86\u4fdd\u8bc1\u6570\u636e\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\uff0cMySQL \u63d0\u4f9b\u4e86\u9501\u673a\u5236\u6765\u63a7\u5236\u5bf9\u6570\u636e\u5e93\u7684\u5e76\u53d1\u64cd\u4f5c\u3002<\/p>\n

\u672c\u6587\u5c06\u5206\u6790 MySQL \u9501\u7684\u5e94\u7528\u573a\u666f\uff0c\u5e76\u63d0\u4f9b\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n

    \n
  1. \u8868\u7ea7\u9501<\/li>\n<\/ol>\n

    \u8868\u7ea7\u9501\u662f\u6700\u57fa\u672c\u7684\u9501\u673a\u5236\uff0c\u53ef\u4ee5\u9501\u5b9a\u6574\u4e2a\u8868\u3002<\/p>\n

    \uff081\uff09\u5e94\u7528\u573a\u666f\uff1a\u5f53\u9700\u8981\u5bf9\u6574\u4e2a\u8868\u8fdb\u884c\u64cd\u4f5c\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u8868\u7ea7\u9501\u3002\u4f8b\u5982\uff0c\u5f53\u9700\u8981\u91cd\u5efa\u8868\u7d22\u5f15\u6216\u8fdb\u884c\u957f\u65f6\u95f4\u7684\u6570\u636e\u5907\u4efd\u65f6\u3002<\/p>\n

    \uff082\uff09\u4ee3\u7801\u793a\u4f8b\uff1a\u9501\u5b9a\u8868\u548c\u91ca\u653e\u8868\u7684\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n

    \u9501\u5b9a\u8868\uff1a<\/p>\n

    LOCK TABLES table_name [AS alias_name] {READ | WRITE}<\/pre>\n
    \u91ca\u653e\u8868\uff1a<\/p>\n
    UNLOCK TABLES<\/pre>\n
      \n
    1. \u884c\u7ea7\u9501<\/li>\n<\/ol>\n
      \u884c\u7ea7\u9501\u662f\u6700\u5e38\u7528\u7684\u9501\u673a\u5236\uff0c\u53ef\u4ee5\u9501\u5b9a\u8868\u4e2d\u7684\u4e00\u884c\u6216\u591a\u884c\u6570\u636e\u3002<\/p>\n
      \uff081\uff09\u5e94\u7528\u573a\u666f\uff1a\u5f53\u9700\u8981\u66f4\u65b0\u6216\u5220\u9664\u67d0\u4e9b\u884c\u6570\u636e\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u884c\u7ea7\u9501\u3002\u4f8b\u5982\uff0c\u5f53\u591a\u4e2a\u7528\u6237\u540c\u65f6\u5c1d\u8bd5\u8d2d\u4e70\u67d0\u4e2a\u5546\u54c1\uff0c\u9700\u8981\u786e\u4fdd\u5546\u54c1\u5e93\u5b58\u4e0d\u4f1a\u51fa\u73b0\u8d1f\u6570\u3002<\/p>\n
      \uff082\uff09\u4ee3\u7801\u793a\u4f8b\uff1a\u9501\u5b9a\u884c\u548c\u91ca\u653e\u884c\u7684\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n
      \u9501\u5b9a\u884c\uff1a<\/p>\n
      SELECT * FROM table_name WHERE condition FOR UPDATE<\/pre>\n
      \u91ca\u653e\u884c\uff1a<\/p>\n
      COMMIT \u6216 ROLLBACK<\/pre>\n
        \n
      1. \u95f4\u9699\u9501<\/li>\n<\/ol>\n
        \u95f4\u9699\u9501\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u884c\u7ea7\u9501\uff0c\u53ef\u4ee5\u9501\u5b9a\u7d22\u5f15\u4e4b\u95f4\u7684\u95f4\u9699\uff0c\u9632\u6b62\u5176\u4ed6\u4e8b\u52a1\u5728\u8be5\u95f4\u9699\u4e2d\u63d2\u5165\u6570\u636e\u3002<\/p>\n
        \uff081\uff09\u5e94\u7528\u573a\u666f\uff1a\u5f53\u9700\u8981\u786e\u4fdd\u67d0\u4e2a\u8303\u56f4\u5185\u7684\u6570\u636e\u4e0d\u4f1a\u88ab\u5176\u4ed6\u4e8b\u52a1\u4fee\u6539\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u95f4\u9699\u9501\u3002\u4f8b\u5982\uff0c\u5f53\u5b9e\u73b0\u8ba2\u5355\u53f7\u7684\u8fde\u7eed\u81ea\u589e\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u95f4\u9699\u9501\u6765\u786e\u4fdd\u6ca1\u6709\u91cd\u590d\u7684\u8ba2\u5355\u53f7\u3002<\/p>\n
        \uff082\uff09\u4ee3\u7801\u793a\u4f8b\uff1a\u9501\u5b9a\u95f4\u9699\u548c\u91ca\u653e\u95f4\u9699\u7684\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n
        \u9501\u5b9a\u95f4\u9699\uff1a<\/p>\n
        SELECT * FROM table_name WHERE index_column >= start_value AND index_column <= end_value FOR UPDATE<\/pre>\n
        \u91ca\u653e\u95f4\u9699\uff1a<\/p>\n
        COMMIT \u6216 ROLLBACK<\/pre>\n
          \n
        1. \u5171\u4eab\u9501\u548c\u6392\u4ed6\u9501<\/li>\n<\/ol>\n
          \u5171\u4eab\u9501\uff08Shared lock\uff09\u662f\u4e00\u79cd\u8bfb\u9501\uff0c\u591a\u4e2a\u4e8b\u52a1\u53ef\u4ee5\u540c\u65f6\u83b7\u53d6\u5171\u4eab\u9501\uff0c\u4f46\u4e0d\u80fd\u83b7\u53d6\u6392\u4ed6\u9501\u3002\u6392\u4ed6\u9501\uff08Exclusive lock\uff09\u662f\u4e00\u79cd\u5199\u9501\uff0c\u53ea\u6709\u4e00\u4e2a\u4e8b\u52a1\u53ef\u4ee5\u83b7\u53d6\u6392\u4ed6\u9501\u3002<\/p>\n
          \uff081\uff09\u5e94\u7528\u573a\u666f\uff1a\u5f53\u9700\u8981\u5bf9\u6570\u636e\u8fdb\u884c\u8bfb\u64cd\u4f5c\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u5171\u4eab\u9501\u3002\u5f53\u9700\u8981\u5bf9\u6570\u636e\u8fdb\u884c\u5199\u64cd\u4f5c\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u6392\u4ed6\u9501\u3002<\/p>\n
          \uff082\uff09\u4ee3\u7801\u793a\u4f8b\uff1a\u83b7\u53d6\u5171\u4eab\u9501\u548c\u6392\u4ed6\u9501\u7684\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n
          \u83b7\u53d6\u5171\u4eab\u9501\uff1a<\/p>\n
          SELECT * FROM table_name WHERE condition LOCK IN SHARE MODE;<\/pre>\n
          \u83b7\u53d6\u6392\u4ed6\u9501\uff1a<\/p>\n
          SELECT * FROM table_name WHERE condition FOR UPDATE;<\/pre>\n
          \u4ee5\u4e0a\u662f MySQL \u9501\u7684\u4e3b\u8981\u5e94\u7528\u573a\u666f\u548c\u76f8\u5e94\u7684\u4ee3\u7801\u793a\u4f8b\u3002\u6839\u636e\u5177\u4f53\u7684\u4e1a\u52a1\u9700\u6c42\uff0c\u6211\u4eec\u53ef\u4ee5\u9009\u62e9\u4e0d\u540c\u7684\u9501\u673a\u5236\u6765\u786e\u4fdd\u5e76\u53d1\u8bbf\u95ee\u7684\u6570\u636e\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u3002\u5f53\u7136\uff0c\u9501\u7684\u4f7f\u7528\u9700\u8981\u8c28\u614e\uff0c\u8fc7\u591a\u6216\u8fc7\u957f\u65f6\u95f4\u7684\u9501\u5b9a\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6027\u80fd\u95ee\u9898\u3002\u56e0\u6b64\uff0c\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d\uff0c\u9700\u8981\u6839\u636e\u5b9e\u9645\u60c5\u51b5\u9009\u62e9\u5408\u9002\u7684\u9501\u673a\u5236\uff0c\u5e76\u5bf9\u9501\u7684\u4f7f\u7528\u8fdb\u884c\u4f18\u5316\u548c\u8c03\u6574\u3002<\/p>\n
          \u7ec8\u4e8e\u4ecb\u7ecd\u5b8c\u5566\uff01\u5c0f\u4f19\u4f34\u4eec\uff0c\u8fd9\u7bc7\u5173\u4e8e\u300a\u5206\u6790MySQL\u9501\u7684\u4f7f\u7528\u573a\u666f\u300b\u7684\u4ecb\u7ecd\u5e94\u8be5\u8ba9\u4f60\u6536\u83b7\u591a\u591a\u4e86\u5427\uff01\u6b22\u8fce\u5927\u5bb6\u6536\u85cf\u6216\u5206\u4eab\u7ed9\u66f4\u591a\u9700\u8981\u5b66\u4e60\u7684\u670b\u53cb\u5427~\u7c73\u4e91\u516c\u4f17\u53f7\u4e5f\u4f1a\u53d1\u5e03\u6570\u636e\u5e93\u76f8\u5173\u77e5\u8bc6\uff0c\u5feb\u6765\u5173\u6ce8\u5427\uff01<\/p>\n
          \n
          \n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
          \u5206\u6790MySQL\u9501\u7684\u4f7f\u7528\u573a\u666f IT\u884c\u4e1a\u76f8\u5bf9\u4e8e\u4e00\u822c\u4f20\u7edf\u884c\u4e1a\uff0c\u53d1\u5c55\u66f4\u65b0\u901f\u5ea6\u66f4\u5feb\uff0c\u4e00\u65e6\u505c\u6b62\u4e86\u5b66\u4e60\uff0c\u5f88\u5feb\u5c31\u4f1a\u88ab\u884c\u4e1a\u6240\u6dd8\u6c70\u3002\u6240\u4ee5\u6211\u4eec\u9700\u8981\u8e0f\u8e0f\u5b9e\u5b9e\u7684\u4e0d\u65ad\u5b66\u4e60\uff0c\u7cbe\u8fdb\u81ea\u5df1\u7684\u6280\u672f\uff0c\u5c24\u5176\u662f\u521d\u5b66\u8005\u3002\u4eca\u5929\u7c73\u4e91\u7ed9\u5927\u5bb6\u6574\u7406\u4e86\u300a\u5206\u6790MySQL\u9501\u7684\u4f7f\u7528\u573a\u666f\u300b\uff0c\u804a\u804a\uff0c\u6211\u4eec\u4e00\u8d77\u6765\u770b\u770b\u5427\uff01 MySQL \u9501\u7684\u5e94\u7528\u573a\u666f\u5206\u6790 \u5728\u5f00\u53d1\u5e94\u7528\u7a0b\u5e8f\u65f6\uff0c\u5e38\u5e38\u9700\u8981\u5bf9\u6570\u636e\u5e93\u8fdb\u884c\u8bfb\u53d6\u548c\u5199\u5165\u64cd\u4f5c\u3002\u7136\u800c\uff0c\u5f53\u591a\u4e2a\u7528\u6237\u540c\u65f6\u5bf9\u6570\u636e\u5e93\u8fdb\u884c\u64cd\u4f5c\u65f6\uff0c\u5c31\u4f1a\u51fa\u73b0\u5e76\u53d1\u8bbf\u95ee\u7684\u95ee\u9898\u3002\u4e3a\u4e86\u4fdd\u8bc1\u6570\u636e\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\uff0cMySQL \u63d0\u4f9b\u4e86\u9501\u673a\u5236\u6765\u63a7\u5236\u5bf9\u6570\u636e\u5e93\u7684\u5e76\u53d1\u64cd\u4f5c\u3002 \u672c\u6587\u5c06\u5206\u6790 MySQL \u9501\u7684\u5e94\u7528\u573a\u666f\uff0c\u5e76\u63d0\u4f9b\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u3002 \u8868\u7ea7\u9501 \u8868\u7ea7\u9501\u662f\u6700\u57fa\u672c\u7684\u9501\u673a\u5236\uff0c\u53ef\u4ee5\u9501\u5b9a\u6574\u4e2a\u8868\u3002 \uff081\uff09\u5e94\u7528\u573a\u666f\uff1a\u5f53\u9700\u8981\u5bf9\u6574\u4e2a\u8868\u8fdb\u884c\u64cd\u4f5c\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u8868\u7ea7\u9501\u3002\u4f8b\u5982\uff0c\u5f53\u9700\u8981\u91cd\u5efa\u8868\u7d22\u5f15\u6216\u8fdb\u884c\u957f\u65f6\u95f4\u7684\u6570\u636e\u5907\u4efd\u65f6\u3002 \uff082\uff09\u4ee3\u7801\u793a\u4f8b\uff1a\u9501\u5b9a\u8868\u548c\u91ca\u653e\u8868\u7684\u8bed\u6cd5\u5982\u4e0b\uff1a \u9501\u5b9a\u8868\uff1a LOCK TABLES table_name [AS alias_name] {READ | WRITE} \u91ca\u653e\u8868\uff1a UNLOCK TABLES \u884c\u7ea7\u9501 \u884c\u7ea7\u9501\u662f\u6700\u5e38\u7528\u7684\u9501\u673a\u5236\uff0c\u53ef\u4ee5\u9501\u5b9a\u8868\u4e2d\u7684\u4e00\u884c\u6216\u591a\u884c\u6570\u636e\u3002 \uff081\uff09\u5e94\u7528\u573a\u666f\uff1a\u5f53\u9700\u8981\u66f4\u65b0\u6216\u5220\u9664\u67d0\u4e9b\u884c\u6570\u636e\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u884c\u7ea7\u9501\u3002\u4f8b\u5982\uff0c\u5f53\u591a\u4e2a\u7528\u6237\u540c\u65f6\u5c1d\u8bd5\u8d2d\u4e70\u67d0\u4e2a\u5546\u54c1\uff0c\u9700\u8981\u786e\u4fdd\u5546\u54c1\u5e93\u5b58\u4e0d\u4f1a\u51fa\u73b0\u8d1f\u6570\u3002 \uff082\uff09\u4ee3\u7801\u793a\u4f8b\uff1a\u9501\u5b9a\u884c\u548c\u91ca\u653e\u884c\u7684\u8bed\u6cd5\u5982\u4e0b\uff1a \u9501\u5b9a\u884c\uff1a SELECT * FROM table_name WHERE condition FOR UPDATE \u91ca\u653e\u884c\uff1a COMMIT \u6216 ROLLBACK \u95f4\u9699\u9501 \u95f4\u9699\u9501\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u884c\u7ea7\u9501\uff0c\u53ef\u4ee5\u9501\u5b9a\u7d22\u5f15\u4e4b\u95f4\u7684\u95f4\u9699\uff0c\u9632\u6b62\u5176\u4ed6\u4e8b\u52a1\u5728\u8be5\u95f4\u9699\u4e2d\u63d2\u5165\u6570\u636e\u3002 \uff081\uff09\u5e94\u7528\u573a\u666f\uff1a\u5f53\u9700\u8981\u786e\u4fdd\u67d0\u4e2a\u8303\u56f4\u5185\u7684\u6570\u636e\u4e0d\u4f1a\u88ab\u5176\u4ed6\u4e8b\u52a1\u4fee\u6539\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u95f4\u9699\u9501\u3002\u4f8b\u5982\uff0c\u5f53\u5b9e\u73b0\u8ba2\u5355\u53f7\u7684\u8fde\u7eed\u81ea\u589e\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u95f4\u9699\u9501\u6765\u786e\u4fdd\u6ca1\u6709\u91cd\u590d\u7684\u8ba2\u5355\u53f7\u3002 \uff082\uff09\u4ee3\u7801\u793a\u4f8b\uff1a\u9501\u5b9a\u95f4\u9699\u548c\u91ca\u653e\u95f4\u9699\u7684\u8bed\u6cd5\u5982\u4e0b\uff1a \u9501\u5b9a\u95f4\u9699\uff1a SELECT * FROM table_name WHERE index_column >= start_value 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