{"id":3946,"date":"2019-03-02T18:00:07","date_gmt":"2019-03-02T10:00:07","guid":{"rendered":"http:\/\/www.xttblog.com\/?p=3946"},"modified":"2019-03-02T18:00:07","modified_gmt":"2019-03-02T10:00:07","slug":"mysql%e9%9d%a2%e8%af%95%e9%a2%98%ef%bc%8c%e4%b8%ba%e4%bb%80%e4%b9%88%e6%88%91%e6%8e%a8%e8%8d%90-update-%e8%af%ad%e5%8f%a5%e7%9a%84-where-%e6%9d%a1%e4%bb%b6%e5%8a%a0%e4%b8%8a%e4%b8%bb%e9%94%ae%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.xttblog.com\/?p=3946","title":{"rendered":"MySQL\u9762\u8bd5\u9898\uff0c\u4e3a\u4ec0\u4e48\u6211\u63a8\u8350 update \u8bed\u53e5\u7684 where \u6761\u4ef6\u52a0\u4e0a\u4e3b\u952e\uff1f"},"content":{"rendered":"

\n\t\u524d\u9762\u6211\u63a8\u8350\u4e86\u6781\u5ba2\u65f6\u95f4\u7684 Java \u9ad8\u5e76\u53d1\u8bfe\u7a0b\uff0c\u5f88\u591a\u4eba\u6839\u636e\u8fd9\u7bc7\u6587\u7ae0\u300a2019 Java \u9ad8\u5e76\u53d1\u5b66\u4e60\u8def\u7ebf\u56fe\u548c\u5fc5\u4f1a\u7684 50 \u9053\u9762\u8bd5\u9898\uff01<\/a>\u300b\u7684\u4ecb\u7ecd\u4e70\u4e86\u8bfe\u7a0b\uff0c\u6211\u5e0c\u671b\u5927\u5bb6\u80fd\u591f\u8ba4\u771f\u7684\u770b\uff01\u522b\u628a\u94b1\u6d6a\u8d39\u4e86\uff01\n<\/p>\n

\n\t\u4eca\u5929\uff0c\u6211\u6765\u8bf4\u53e6\u5916\u4e00\u4e2a\u9762\u8bd5\u9898\u3002\u4e3a\u4ec0\u4e48\u63a8\u8350 MySQL \u7684 update \u8bed\u53e5\u4e2d where \u6761\u4ef6\u8981\u6709\u4e3b\u952e\uff1f\n<\/p>\n

\n\t\u770b\u5230\u8fd9\u4e2a\u95ee\u9898\u7684\u670b\u53cb\uff0c\u6211\u76f8\u4fe1\u4e0d\u5c11\u4eba\u6709\u7591\u95ee\uff0c\u6211 where \u4e0d\u52a0\u4e3b\u952e\u8fd8\u4e0d\u80fd\u66f4\u65b0\u4e86\uff1f\n<\/p>\n

\n\t\u4e0d\u662f\u7684\uff0c\u80fd\u66f4\u65b0\uff0c\u4e5f\u80fd\u4f7f\u7528\u3002\u4f46\u662f\u6211\u4e0d\u5efa\u8bae\u4f60\u4eec\u8fd9\u6837\u505a\u3002\u56e0\u4e3a\u6211\u4eec\u5927\u591a\u6570\u4eba\u4f7f\u7528 MySQL \u90fd\u4f7f\u7528\u7684\u662f innodb \u5b58\u50a8\u5f15\u64ce\uff0c\u5b83\u662f\u652f\u6301\u4e8b\u52a1\u7684\u3002\u5982\u679c\u4f60\u7684 where \u6761\u4ef6\u4e0d\u52a0\u4e3b\u952e\uff0c\u90a3\u4e48 innodb \u7684\u884c\u7ea7\u9501\u5c31\u53ef\u80fd\u53d8\u6210\u8868\u7ea7\u9501\u3002\u5982\u679c\u5347\u7ea7\u4e3a\u8868\u7ea7\u9501\uff0c\u90a3\u4e48\u5e76\u53d1\u6027\u5c31\u5c06\u5927\u6253\u6298\u6263\u4e86\u3002\n<\/p>\n

\n\t\"\u8fd0\u7ef4\u5de5\u7a0b\u5e08\u9762\u8bd5\"\n<\/p>\n

\n\t\u4e4b\u524d\u4e5f\u6709\u7f51\u53cb\u5728\u6211\u7684\u6587\u7ae0\u91cc\u8bc4\u8bba\u8bf4\uff0c\u884c\u9501\u5347\u7ea7\u4e3a\u8868\u9501\u4e0e\u4e8b\u52a1\u7684\u9694\u79bb\u7ea7\u522b\u6709\u5173\uff0c\u56e0\u4e3a\u4e8b\u52a1\u7684\u9694\u79bb\u6027\u662f\u9760\u52a0\u9501\u6765\u5b9e\u73b0\u7684\uff0c\u800c\u52a0\u9501\u4e0d\u5f53\u52bf\u5fc5\u4f1a\u5f71\u54cd\u5e76\u53d1\u3002\n<\/p>\n

\n\t\u4e0d\u4e00\u6837\u7684\u9501\uff0c\u652f\u6301\u7684\u5e76\u53d1\u4e5f\u662f\u4e0d\u4e00\u6837\u7684\u3002\u800c\u6700\u7ec8\u52a0\u4ec0\u4e48\u6837\u7684\u9501\uff0c\u4e0e\u7d22\u5f15\u4e5f\u6709\u83ab\u5927\u7684\u5173\u7cfb\uff0c\u56e0\u6b64\uff0c\u53ef\u4ee5\u8bf4\u91c7\u7528\u4ec0\u4e48\u6837\u7684\u7d22\u5f15\u51b3\u5b9a\u4e86\u652f\u6301\u591a\u5c11\u5e76\u53d1\u3002\n<\/p>\n

\n\t\u5e38\u7528\u7684\u7d22\u5f15\u6709\u4e09\u7c7b\uff1a\u4e3b\u952e\u3001\u552f\u4e00\u7d22\u5f15\u3001\u666e\u901a\u7d22\u5f15\u3002\u4e3b\u952e\u6211\u5c31\u4e0d\u518d\u7ec6\u8bf4\uff0c\u81ea\u5e26\u6700\u9ad8\u6548\u7684\u7d22\u5f15\u5c5e\u6027\uff1b\u552f\u4e00\u7d22\u5f15\u6307\u7684\u662f\u8be5\u5c5e\u6027\u503c\u91cd\u590d\u7387\u4e3a 0\uff0c\u4e00\u822c\u53ef\u4f5c\u4e3a\u4e1a\u52a1\u4e3b\u952e\uff0c\u4f8b\u5982\u8ba2\u5355\u53f7\uff1b\u666e\u901a\u7d22\u5f15 \u4e0e\u524d\u8005\u4e0d\u540c\u7684\u662f\uff0c\u5c5e\u6027\u503c\u7684\u91cd\u590d\u7387\u5927\u4e8e 0\uff0c\u4e0d\u80fd\u4f5c\u4e3a\u552f\u4e00\u6307\u5b9a\u6761\u4ef6\uff0c\u4f8b\u5982\u8d2d\u4e70\u7528\u6237\u7684\u59d3\u540d\u3002\u4eca\u5929\u6211\u4e3b\u8981\u60f3\u8bf4\u7684\u662f“\u666e\u901a\u7d22\u5f15\u5bf9\u5e76\u53d1\u7684\u5f71\u54cd”\u3002\n<\/p>\n

\n\t\u6ca1\u6709\u7d22\u5f15\u7684\u60c5\u51b5\uff0c\u6211\u5c31\u4e0d\u8bf4\u4e86\uff0c\u90a3\u5bf9\u5e76\u53d1\u6765\u8bf4\u80af\u5b9a\u662f\u707e\u96be\uff0c\u6b7b\u9501\u4f30\u8ba1\u662f\u5e38\u6709\u7684\u4e8b\u3002\n<\/p>\n

\n\t\u4e3a\u4ec0\u4e48\u6211\u63a8\u8350 update \u4e2d where \u6761\u4ef6\u52a0\u5165\u4e3b\u952e\u5462\uff1f\n<\/p>\n

\n\t\u56e0\u4e3a\u4e3b\u952e\u662f\u552f\u4e00\u7d22\u5f15\uff0c\u4f60\u7528\u5176\u4ed6\u552f\u4e00\u7d22\u5f15\u4e5f\u53ef\u4ee5\uff0c\u4f46\u662f\u4e00\u822c\u7684\u8868\uff0c\u53ef\u80fd\u53ea\u6709\u4e3b\u952e\u624d\u662f\u552f\u4e00\u7684\u3002\u6240\u4ee5\uff0c\u6211\u5efa\u8bae\u4f60\u66f4\u65b0\u7684\u65f6\u5019\uff0c\u8bb0\u4f4f\u52a0\u4e0a\u4e3b\u952e\u5c31\u884c\u4e86\u3002\n<\/p>\n

\n\t\u4f60\u53ea\u9700\u8981\u8bb0\u4f4f\u4e3b\u952e\u548c\u552f\u4e00\u7d22\u5f15\u662f\u884c\u9501\uff0c\u5176\u4ed6\u7d22\u5f15\u5e76\u4e0d\u4e00\u5b9a\u662f\u884c\u9501\uff0c\u5f88\u53ef\u80fd\u662f\u8868\u9501\u3002\u8fd9\u6837\uff0c\u6b7b\u9501\u7684\u6982\u7387\u5c31\u975e\u5e38\u7684\u9ad8\uff0c\u5e76\u53d1\u4e5f\u5c31\u968f\u4e4b\u4e0b\u964d\u3002\n<\/p>\n

\n\t\u4e0b\u9762\u6211\u4eec\u901a\u8fc7\u4e00\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50\u6765\u770b\u4e00\u4e0b\uff0c\u666e\u901a\u7d22\u5f15\u7684\u60c5\u51b5\u3002\n<\/p>\n

\n\t\u76f8\u5173\u5efa\u8868\u8bed\u53e5\uff0c\u7d22\u5f15\uff0c\u548c\u6570\u636e\u5982\u4e0b\u6240\u793a\uff1a\n<\/p>\n

\r\nDROP TABLE IF EXISTS `xttblog_order`;\r\nCREATE TABLE `xttblog_order` (\r\n`ID`  int(5) NOT NULL AUTO_INCREMENT ,\r\n`ORDER_NO`  varchar(16) NOT NULL ,\r\n`CREATE_TIME` datetime NOT NULL DEFAULT now(),\r\n`UPDATE_TIME` datetime NULL DEFAULT now(),\r\nPRIMARY KEY (`ID`)\r\n)ENGINE=InnoDB DEFAULT CHARACTER SET=utf8 COLLATE=utf8_general_ci;\r\n\r\nALTER TABLE `xttblog_order` ADD INDEX index_create_time ( `CREATE_TIME` );\r\n\r\nINSERT INTO `xttblog_order`(`ORDER_NO`,`CREATE_TIME`,`UPDATE_TIME`) VALUE ('00000001','2019-03-01 14:00:00',null);\r\nINSERT INTO `xttblog_order`(`ORDER_NO`,`CREATE_TIME`,`UPDATE_TIME`) VALUE ('00000002','2019-03-01 14:00:00',null);\r\nINSERT INTO `xttblog_order`(`ORDER_NO`,`CREATE_TIME`,`UPDATE_TIME`) VALUE ('00000003','2019-03-01 14:00:00',null);\r\nINSERT INTO `xttblog_order`(`ORDER_NO`,`CREATE_TIME`,`UPDATE_TIME`) VALUE ('00000004','2019-03-01 14:00:00',null);\r\nINSERT INTO `xttblog_order`(`ORDER_NO`,`CREATE_TIME`,`UPDATE_TIME`) VALUE ('00000005','2019-03-02 14:00:00',null);\r\nINSERT INTO `xttblog_order`(`ORDER_NO`,`CREATE_TIME`,`UPDATE_TIME`) VALUE ('00000006','2019-03-02 14:00:00',null);\r\nINSERT INTO `xttblog_order`(`ORDER_NO`,`CREATE_TIME`,`UPDATE_TIME`) VALUE ('00000007','2019-03-02 14:00:00',null);\r\nINSERT INTO `xttblog_order`(`ORDER_NO`,`CREATE_TIME`,`UPDATE_TIME`) VALUE ('00000008','2019-03-02 14:00:00',null);\r\n<\/pre>\n
\n\t\u7136\u540e\u53d6\u6d88\u4e8b\u52a1\u81ea\u52a8\u63d0\u4ea4 set autocommit = off;\n<\/p>\n
\n\t\u5f53\u6211\u4eec\u8868\u91cc\u9762\u521b\u5efa\u65f6\u95f4\u91cd\u590d\u7387\u6bd4\u8f83\u9ad8\u7684\u65f6\u5019\u3002\u5206\u522b\u5f00\u542f\u4e24\u4e2a\u7a97\u53e3\uff0c\u4e24\u4e2a\u4e8b\u52a1\u3002\n<\/p>\n
\r\n-- \u7a97\u53e3 1 \u4e2d\u7684\u4e8b\u52a1\r\nBEGIN;\r\nSELECT t.* FROM `xttblog_order` t WHERE t.`create_time` = '2019-03-01 14:00:00' FOR UPDATE;\r\n\r\n-- \u7a97\u53e3 2 \u4e2d\u7684\u4e8b\u52a1\r\nBEGIN;\r\nSELECT t.* FROM `xttblog_order` t WHERE t.`create_time` = '2019-03-02 14:00:00' FOR UPDATE;<\/pre>\n
\n\t\u4e3a\u4e86\u6f14\u793a\uff0c\u4f60\u53ef\u4ee5\u628a\u6570\u636e\u91cf\u52a0\u591a\u70b9\uff0c\u6bd4\u5982 03-01 \u548c 03-02 \u7684\u6570\u636e\u5404 10 \u4e07\u6761\u3002\n<\/p>\n
\n\t\u4f9d\u6b21\u6267\u884c\u4e24\u4e2a\u7a97\u53e3\u4e2d\u7684 SQL\uff0c\u4f60\u4f1a\u53d1\u73b0\uff0c\u5176\u4e2d\u4e00\u4e2a\u7a97\u53e3\u4e2d\u7684\u66f4\u65b0\u5931\u8d25\u4e86\u3002\u63d0\u793a\uff1a\n<\/p>\n
\n
\n\t\t1205 – Lock wait timeout exceeded; try restarting transaction\n\t<\/p>\n<\/blockquote>\n
\n\t\u770b\u4f3c\u8fd9\u4e24\u4e2a\u4e8b\u52a1\u4e0d\u4e92\u76f8\u5e72\uff0c\u4f46\u662f\u5728\u5176\u4e2d\u4e00\u4e2a\u4e8b\u52a1\u4e2d\u66f4\u65b0\u81ea\u5df1\u9501\u5b9a\u7684\u6570\u636e\u5931\u8d25\u540e\uff0c\u5e94\u8be5\u80fd\u8bf4\u660e\u5728\u6b64\u65f6\u5f15\u53d1\u4e86\u8868\u9501\u3002\u8fd9\u662f\u5728\u975e\u4e3b\u952e\u7d22\u5f15\u6216\u8005\u8bf4\u662f\u552f\u4e00\u7d22\u5f15\uff0c\u5e76\u4e14\u7d22\u5f15\u6570\u636e\u91cd\u590d\u91cf\u6bd4\u8f83\u9ad8\u7684\u60c5\u51b5\u4e0b\uff0c\u4f60\u7684\u66f4\u65b0\u53d1\u751f\u91cf\u8868\u9501\u3002\u5e76\u53d1\u80fd\u529b\u5c31\u4f1a\u5927\u5927\u4e0b\u964d\uff01\n<\/p>\n
\n\t\u4f60\u4eec\u53ef\u4ee5\u8bd5\u4e00\u4e0b\uff0c\u5982\u679c\u6b64\u65f6\u4f7f\u7528\u4e3b\u952e\u6216\u552f\u4e00\u7d22\u5f15\u4f1a\u4e0d\u4f1a\u8fd9\u6837\u3002\n<\/p>\n
\n\t\"\u4f1a\u5e76\u53d1\u7a0b\u5e8f\u5458\u7684\u85aa\u8d44\"\n<\/p>\n
\n\t\u5728\u6211\u4eec\u7684\u7535\u5546\u7cfb\u7edf\u4e2d\uff0c\u8fd9\u6837\u7684\u4ee3\u7801\u5e76\u4e0d\u5c11\u3002\u5728\u4e00\u4e9b\u70ed\u95e8\u5546\u54c1\u548c\u79d2\u6740\u3001\u4f18\u60e0\u3001\u6253\u6298\u7b49\u6d3b\u52a8\u4e2d\u7ecf\u5e38\u4f1a\u53d1\u751f\u4e00\u4e9b\u83ab\u540d\u5176\u5999\u7684\u5f02\u5e38\uff0c\u5bfc\u81f4\u7528\u6237\u4f53\u9a8c\u5927\u6253\u6298\u6263\u3002\n<\/p>\n
\n\t\u4e0a\u9762\u7684\u6d4b\u8bd5\u6570\u636e\uff0c\u4f60\u628a\u5b83\u4eec\u5168\u90e8\u5220\u9664\uff0c\u7136\u540e\u518d\u65b0\u589e\u4e00\u4e9b\u6570\u636e\uff0c\u8fd9\u4e9b\u6570\u636e\u4e2d\u5728 create_time \u91cd\u590d\u7387\u4e3a 0 \u7684\u60c5\u51b5\u4e0b\uff0c\u4f60\u4f1a\u53d1\u73b0\u4e24\u4e2a\u4e8b\u52a1\u5c31\u90fd\u80fd\u6210\u529f\u4e86\u3002\u8fd9\u8bf4\u660e\u5b83\u4eec\u8fd9\u65f6\u7528\u7684\u5e94\u8be5\u662f\u884c\u7ea7\u9501\uff0c\u6548\u7387\u66f4\u9ad8\u3002\n<\/p>\n
\n\t\u4ee5\u4e0a\uff0c\u6d4b\u8bd5\u8bf4\u660e\u5728\u66f4\u65b0\u6570\u636e\u65f6\uff0c\u5c3d\u91cf\u4f7f\u7528\u4e3b\u952e\u6216\u552f\u4e00\u7d22\u5f15\u3002\u4f46\u662f\u552f\u4e00\u7d22\u5f15\u5e76\u4e0d\u5c11\u6bcf\u4e2a\u8868\u90fd\u6709\u7684\uff0c\u800c\u4e3b\u952e\u5fc5\u987b\u662f\u6bcf\u4e2a\u8868\u90fd\u5fc5\u987b\u6709\u7684\u3002\u6240\u4ee5\uff0c\u6211\u5efa\u8bae\u4f60\u4eec\u5728\u66f4\u65b0\u6570\u636e\u65f6\uff0c\u90fd\u5e26\u4e0a\u4e3b\u952e\uff01<\/p>\n
\"\u4e1a\u4f59\u8349\u516c\u4f17\u53f7\"\/<\/p>
\u6700\u540e\uff0c\u6b22\u8fce\u5173\u6ce8\u6211\u7684\u4e2a\u4eba\u5fae\u4fe1\u516c\u4f17\u53f7\uff1a\u4e1a\u4f59\u8349\uff08yyucao\uff09\uff01\u53ef\u52a0\u4f5c\u8005\u5fae\u4fe1\u53f7\uff1axttblog2<\/font>\u3002\u5907\u6ce8\uff1a\u201c1\u201d\uff0c\u6dfb\u52a0\u535a\u4e3b\u5fae\u4fe1\u62c9\u4f60\u8fdb\u5fae\u4fe1\u7fa4\u3002\u5907\u6ce8\u9519\u8bef\u4e0d\u4f1a\u540c\u610f\u597d\u53cb\u7533\u8bf7\u3002<\/b>\u518d\u6b21\u611f\u8c22\u60a8\u7684\u5173\u6ce8\uff01\u540e\u7eed\u6709\u7cbe\u5f69\u5185\u5bb9\u4f1a\u7b2c\u4e00\u65f6\u95f4\u53d1\u7ed9\u60a8\uff01\u539f\u521b\u6587\u7ae0\u6295\u7a3f\u8bf7\u53d1\u9001\u81f3532009913@qq.com\u90ae\u7bb1\u3002\u5546\u52a1\u5408\u4f5c\u4e5f\u53ef\u6dfb\u52a0\u4f5c\u8005\u5fae\u4fe1\u8fdb\u884c\u8054\u7cfb\uff01<\/p>
\u672c\u6587\u539f\u6587\u51fa\u5904\uff1a\u4e1a\u4f59\u8349<\/a>\uff1a » MySQL\u9762\u8bd5\u9898\uff0c\u4e3a\u4ec0\u4e48\u6211\u63a8\u8350 update \u8bed\u53e5\u7684 where \u6761\u4ef6\u52a0\u4e0a\u4e3b\u952e\uff1f<\/a><\/p>","protected":false},"excerpt":{"rendered":"
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