{"id":959,"date":"2014-08-23T00:03:42","date_gmt":"2014-08-22T16:03:42","guid":{"rendered":"http:\/\/www.yeetrack.com\/?p=959"},"modified":"2014-08-23T00:05:04","modified_gmt":"2014-08-22T16:05:04","slug":"%e4%b8%80%e6%ac%a1%e6%95%b0%e6%8d%ae%e5%ba%93%e8%af%afupdate%e4%b9%8b%e5%90%8e%e7%9a%84%e6%95%b0%e6%8d%ae%e6%81%a2%e5%a4%8d","status":"publish","type":"post","link":"https:\/\/www.yeetrack.com\/?p=959","title":{"rendered":"\u4e00\u6b21\u6570\u636e\u5e93\u8befupdate\u4e4b\u540e\u7684\u6570\u636e\u6062\u590d"},"content":{"rendered":"

\u5de5\u4f5c\u9700\u8981\uff0c\u8981\u5bf9\u6570\u636e\u5e93\uff08mysql\uff09\u6570\u636e\u8fdb\u884c\u5bf9\u6bd4\uff0c\u5199\u5b8c\u6d4b\u8bd5\u811a\u672c\u3002\u60f3\u5728\u8868\u4e2d\u4fee\u6539\u4e00\u6761\u6570\u636e\uff0c\u7136\u540e\u8fd0\u884c\u7a0b\u5e8f\u770b\u770b\u6548\u679c\u3002\u6b63\u786e\u7684sql \u00a0update table1 set amount = 100 where id=123;<\/code>\u3002\u53ef\u662f\u5b9e\u9645\u60c5\u51b5\u662f\u6ca1\u6709\u5199where\u6761\u4ef6\uff0c\u5c31\u6309\u4e0b\u4e86\u56de\u8f66\uff0cshell\u5f88\u5feb\u8fd4\u56de\u201c******\u6761\u6570\u636e\u5df2\u7ecf\u88ab\u4fee\u6539\u201d\uff0c\u6655\u4e86\u3002\u8fd8\u597d\uff0c\u6211\u4e0d\u662fDBA\uff0c\u6211\u53ea\u6709\u6743\u9650\u52a8\u6d4b\u8bd5\u5e93\uff0c\u53ef\u662f\u6d4b\u8bd5\u5e93\u4e5f\u662f\u5341\u51e0\u4e2a\u4eba\u516c\u7528\u7684\u3002\u770b\u4e86\u4e0b\u65f6\u95f421:30\uff0c\u5176\u4ed6\u90fd\u4e0b\u73ed\u4e86\uff0c\u4e0d\u7740\u6025\u81ea\u5df1\u6162\u6162\u641e\u3002<\/p>\n

\u6ca1\u6709\u5907\u4efd<\/h2>\n

\u6570\u636e\u5e93\u8bef\u64cd\u4f5c\uff0c\u6570\u636e\u6062\u590d\u9996\u5148\u60f3\u5230\u5907\u4efd\uff0c\u6d4b\u8bd5\u5e93\u4e00\u822c\u90fd\u662f\u7ebf\u4e0a\u6570\u636e\u7684copy\uff0c\u5f88\u5c11\u6709\u5907\u4efd\uff0c\u65b9\u6cd5\u4e0d\u901a\u3002<\/p>\n

binlog\u5168\u91cf\u6062\u590d\u592a\u56f0\u96be<\/h2>\n

\u5927\u81f4\u77e5\u9053mysql\u7684binlog\u65e5\u5fd7\uff0c\u8bb0\u5f55\u4e0b\u6240\u6709\u7684\u64cd\u4f5c\u3002\u5173\u4e8ebinlog\u6709\u51e0\u6761\u547d\u4ee4\u5f88\u6709\u7528\uff0c\u8bb0\u5f55\u4e0b\uff1a<\/p>\n

    \n
  • show variables like 'log_%';<\/code> \u67e5\u770bbinlog\u662f\u5426\u6253\u5f00\n
      mysql> show variables like 'log_%';\n  +----------------------------------------+----------------------------------------+\n  | Variable_name                          | Value                                  |\n  +----------------------------------------+----------------------------------------+\n  | log_bin                                | ON                                     | \n  | log_bin_basename                       | \/home\/somename\/mysql-bin       | \n  | log_bin_index                          | \/home\/somename\/test\/mysql-bin.index | \n  | log_bin_trust_function_creators        | OFF                                    | \n  | log_bin_use_v1_row_events              | OFF                                    | \n  | log_error                              | \/home\/somename\/test\/err.log         | \n  | log_output                             | FILE                                   | \n  | log_queries_not_using_indexes          | ON                                     | \n  | log_slave_updates                      | ON                                     | \n  | log_slow_admin_statements              | OFF                                    | \n  | log_slow_slave_statements              | OFF                                    | \n  | log_throttle_queries_not_using_indexes | 0                                      | \n  | log_warnings                           | 1                                      | \n  +----------------------------------------+----------------------------------------+\n  13 rows in set (0.00 sec) \n<\/code><\/pre>\n<\/li>\n
  • show binary logs;<\/code> \u67e5\u770bmysql\u6570\u636e\u5e93\u4e2dbinlog\u6587\u4ef6\u5217\u8868(\u8fd9\u4e9blog\u57fa\u672c\u4e0a\u90fd\u5f88\u5927)\n
      mysql> show binary logs;\n  +------------------+------------+\n  | Log_name         | File_size  |\n  +------------------+------------+\n  | mysql-bin.000067 | 1074104507 | \n  | mysql-bin.000068 | 1073900275 | \n  | mysql-bin.000069 | 1073742040 | \n  | mysql-bin.000070 | 1073742234 | \n  | mysql-bin.000071 | 1074693303 | \n  | mysql-bin.000072 | 1074476163 | \n  | mysql-bin.000073 | 1073743892 | \n  | mysql-bin.000074 | 1073742728 | \n  | mysql-bin.000075 |   76346728 | \n  +------------------+------------+\n  9 rows in set (0.01 sec)\n<\/code><\/pre>\n<\/li>\n
  • `show master status \\G;' \u67e5\u770b\u5f53\u524d\u4f7f\u7528\u7684binlog\u6587\u4ef6\n
      mysql> show master status \\G;\n  *************************** 1. row ***************************\n             File: mysql-bin.000075\n          Position: 76352042\n      Binlog_Do_DB: \n  Binlog_Ignore_DB: \n  Executed_Gtid_Set: \n  1 row in set (0.00 sec)\n<\/code><\/pre>\n<\/li>\n
  • `show binlog events;' mysql\u63a7\u5236\u53f0\u67e5\u770b\u5f53\u524d\u4f7f\u7528\u7684binlong\u8fd9\u6761\u547d\u4ee4\u8f93\u5165\u540e\uff0c\u57fa\u672c\u4e0a\u90fd\u662f\u6ee1\u5c4f\u6eda\u52a8\u7684\u65e5\u5fd7\uff0c\u5c06\u8fd11G\u7684\u65e5\u5fd7\u8f93\u51fa\u5728mysql\u63a7\u5236\u53f0\u4e2d\uff0c\u614e\u91cd\u3002\u8fd9\u4e9b\u65e5\u5fd7\u8bb0\u5f55\u4e86\u5bf9\u6570\u636e\u5e93\u6709\u589e\u5220\u6539\u6240\u6709\u64cd\u4f5c\u7684sql\u3001\u65f6\u95f4\u3001\u884c\u6570\u7b49\u4fe1\u606f\u3002<\/li>\n
  • show binlog events in 'mysql-bin.000002';<\/code> \u67e5\u770b\u6307\u5b9a\u7684binlog\u3002<\/li>\n
  • mysqlbinlog --stop-date=\"2005-04-20 9:59:59\" \/var\/log\/mysql\/bin.123456<\/code> \u4ecebinlog\u6062\u590d\u65e5\u5fd7\uff0cmysqlbinlog\u4e0d\u662fmysql\u63a7\u5236\u53f0\u547d\u4ee4\uff0c\u662fmysql\u63d0\u4f9b\u7684\u6062\u590d\u5de5\u5177\uff0c\u9700\u8981\u5728shell\u6216\u8005cmd\u4e0b\u6267\u884c<\/li>\n<\/ul>\n
    \u7531\u4e8e\u6ca1\u6709\u6743\u9650\u767b\u5f55\u5230mysql\u8fd9\u53f0\u673a\u5668\uff0c\u53ea\u80fd\u901a\u8fc7mysql\u8fde\u63a5\u6267\u884c\u547d\u4ee4\u3002\u65e0\u6cd5\u4ece\u6570\u636e\u5e93\u670d\u52a1\u5668\u76f4\u63a5\u62ff\u5230binlog\u65e5\u5fd7\u3002mysql\u63d0\u4f9b\uff0de\u53c2\u6570\uff08\u4e4b\u524d\u7adf\u4e0d\u77e5\u9053\uff09\uff0cmysql -u root -p root -e \"show binlog events\" > bin.log<\/code>\u5c06\u65e5\u5fd7\u91cd\u5b9a\u5411\u5230\u6587\u4ef6\u3002<\/p>\n
    \u672c\u673a\u62ff\u5230\u4e86\u5f53\u524d\u5e93\u7684binlog\uff0c\u4f46\u662f\u5b8c\u5168\u6ca1\u6709\u5907\u4efd\u7684\u60c5\u51b5\u4e0b\uff0c\u4f7f\u7528binlog\u6062\u590d\u6570\u636e\uff0c\u53ea\u80fd\u5c06\u8be5\u6570\u636e\u5e93\u4ece\u521b\u5efa\u5230\u73b0\u5728\u4ea7\u751f\u7684binlog\u5168\u90e8\u6267\u884c\u4e00\u904d\uff0c\u8fd9\u5c31\u7ea0\u7ed3\u4e86\uff0cbinlog\u592a\u5927\uff1b\u7136\u540e\u5c31\u662f\u5373\u4f7f\u6211\u4eec\u6709\u8010\u5fc3\u548c\u65f6\u95f4\u6267\u884cbinlog\u4e2d\u7684\u5168\u90e8sql\uff0c\u6211\u4eec\u4e5f\u4e0d\u80fd\u4fdd\u8bc1binlog\u4ece\u521b\u5efa\u5230\u73b0\u5728\u6ca1\u6709\u4eba\u5220\u9664\u8fc7\uff0c\u6bd5\u7adf\u5907\u4efd\u7684\u65e5\u5fd7\uff0c\u4e00\u822c\u4e0d\u4f1a\u653e\u592a\u4e45 \ud83d\ude41<\/p>\n
    \u5728mysql-bin.000075<\/strong>\u8fd9\u4e2a700M\u7684\u65e5\u5fd7\u4e2d\u67e5\u5230\u4e86\u90a3\u6761sql\uff0cgrep \"update table1 set amount=100\" mysql-bin.000075<\/code>,\u4e0d\u77e5\u9053\u5982\u4f55\u6062\u590d\u4e86\u3002<\/p>\n
    shell\u4e2d\u7684sql\u8f93\u51fa\u8bb0\u5f55<\/h2>\n
    \u5728mysql\u63a7\u5236\u53f0\u7ffb\u7740\u4e4b\u524d\u7684\u547d\u4ee4\uff0c\u7a81\u7136\u770b\u5230\u4e4b\u524d\u6267\u884c\u8fc7select * from table1;<\/code>\u8fd9\u6837\u7684\u547d\u4ee4\uff0c\u60f3\u5230\u53ef\u4ee5\u901a\u8fc7mysql\u63a7\u5236\u53f0\u7684\u65e5\u5fd7\uff0c\u89e3\u6790\u51fa\u9700\u8981\u7684\u6570\u636e\uff0c\u518d\u4e00\u6761\u6761update\u56de\u53bb\u3002<\/p>\n
    \u60f3\u7740\u662f\u5728shell\u4e2d\u76f4\u63a5\u627e\u5230select *<\/code>\u7684\u8bb0\u5f55\uff0c\u4f46\u662f\u8fd9\u4e2ashell\u7a97\u53e3\u5df2\u7ecf\u6267\u884c\u8fc7\u4e00\u5929\u7684\u547d\u4ee4\uff0c\u4e14\u521a\u624d\u6267\u884c\u4e86show binlog events<\/code>\uff0c\u8f93\u51fa\u4e86\u8fd1G\u7684\u65e5\u5fd7\uff0c\u5728\u754c\u9762\u4e2d\u4f7f\u7528\u67e5\u627e\u57fa\u672c\u5361\u6b7b\u3002\u5c06shell log\u5bfc\u51fa\u5916\u90e8\u6587\u4ef6\uff0c\u770b\u4e86\u4e0b1.7G\uff01(mac\u7535\u8111\u771f\u662f\u5f3a\u608d\uff0c\u7adf\u7136\u5728shell\u8fd9\u4e2a\u63a7\u5236\u53f0\u4e2d\u653e\u4e861.7G\u7684\u4e1c\u897f\uff0c\u6574\u4f53\u8fd8\u4e0d\u7b97\u592a\u5361)<\/p>\n
    \u627e\u5230\u65b9\u6cd5\u4e86\u5f00\u59cb\u5e72\u6d3b\uff1a<\/p>\n
      \n
    1. \u65e5\u5fd7\u5207\u5272\uff0csplit -b 100m mysql-bin.000075<\/code> \u5c06700M\u7684\u65e5\u5fd7\uff0c\u5207\u6210100M\u5927\u5c0f\u7684\u3002<\/li>\n
    2. \u5728\u5207\u6210\u7684\u65e5\u5fd7\u4e2d\uff0c\u67e5\u627e\u6211\u4eec\u9700\u8981\u7684\u8bb0\u5f55 grep 'update table1 set amount=100' xsa<\/code> (xsa\u662f\u5207\u5272\u51fa\u6765\u7684\u4e00\u4e2a\u6587\u4ef6)\uff0c\u5b9a\u4f4d\u5230\u6211\u4eec\u9700\u8981\u7684\u90a3\u4e2a<\/li>\n
    3. \u4f7f\u7528head\u3001cat\u7b49\u547d\u4ee4\u5b9a\u4f4d\u5230\u6211\u4eec\u9700\u8981\u7684\u884c\u6570\u533a\u95f4<\/li>\n
    4. sed\u547d\u4ee4\u5c06\u884c\u6570\u533a\u95f4\u91cd\u5b9a\u5411\u5230\u6587\u4ef6sed -n \"N1,N2p\" xsa > data.txt<\/code><\/li>\n
    5. \u5199java\u7a0b\u5e8f\uff0c\u89e3\u6790data.txt\uff0c\u6784\u9020sql\uff0c\u4e00\u4e2a\u4e00\u4e2aupdate\u56de\u53bb\uff0c\u5475\u5475\u3002<\/li>\n<\/ol>\n
      \u64cd\u4f5c\u6570\u636e\u5e93\u4e00\u5b9a\u8c28\u614e\uff0c\u6d89\u53ca\u5230\u589e\u5220\u6539\u4e00\u5b9a\u8981\u5c0f\u5fc3\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
      \u5de5\u4f5c\u9700\u8981\uff0c\u8981\u5bf9\u6570\u636e\u5e93\uff08mysql\uff09\u6570\u636e\u8fdb\u884c\u5bf9\u6bd4\uff0c\u5199\u5b8c\u6d4b\u8bd5\u811a\u672c\u3002\u60f3\u5728\u8868\u4e2d\u4fee\u6539\u4e00\u6761\u6570\u636e\uff0c\u7136\u540e\u8fd0\u884c\u7a0b\u5e8f\u770b\u770b\u6548\u679c\u3002\u6b63\u786e\u7684sql \u00a0update table1 set amount = 100 where id...<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"pgc_sgb_lightbox_settings":"","footnotes":""},"categories":[32],"tags":[8,11,7,5,42,41],"class_list":["post-959","post","type-post","status-publish","format-standard","hentry","category-internet","tag-java","tag-linux","tag-7","tag-5","tag-42","tag-41"],"views":5596,"_links":{"self":[{"href":"https:\/\/www.yeetrack.com\/index.php?rest_route=\/wp\/v2\/posts\/959","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.yeetrack.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.yeetrack.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.yeetrack.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.yeetrack.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=959"}],"version-history":[{"count":1,"href":"https:\/\/www.yeetrack.com\/index.php?rest_route=\/wp\/v2\/posts\/959\/revisions"}],"predecessor-version":[{"id":960,"href":"https:\/\/www.yeetrack.com\/index.php?rest_route=\/wp\/v2\/posts\/959\/revisions\/960"}],"wp:attachment":[{"href":"https:\/\/www.yeetrack.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=959"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.yeetrack.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=959"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.yeetrack.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=959"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}