{"id":17494,"date":"2025-06-05T08:43:13","date_gmt":"2025-06-05T00:43:13","guid":{"rendered":"https:\/\/92it.top\/?p=17494"},"modified":"2025-06-05T08:43:46","modified_gmt":"2025-06-05T00:43:46","slug":"1-2-%e4%ba%bf%e7%ba%a7%e5%a4%a7%e8%a1%a8-%e5%a6%82%e4%bd%95-%e5%8a%a0%e7%b4%a2%e5%bc%95","status":"publish","type":"post","link":"https:\/\/92it.top\/?p=17494","title":{"rendered":"1.2 \u4ebf\u7ea7\u5927\u8868, \u5982\u4f55 \u52a0\u7d22\u5f15"},"content":{"rendered":"\n

\u8f6c\u8f7d\uff1a\u817e\u8baf\u4e8c\u9762\uff1a1.2 \u4ebf\u7ea7\u5927\u8868, \u5982\u4f55 \u52a0\u7d22\u5f15\uff1f<\/a><\/p>\n\n\n\n

\u80cc\u666f<\/strong><\/p>\n\n\n\n

\n\n\n\n

“\u4f60\u4eec\u600e\u4e48\u7ed9\u4ebf\u7ea7\u7528\u6237\u8868\u52a0\u7d22\u5f15\u7684\uff1f\u7ebf\u4e0a\u76f4\u63a5\u6267\u884cALTER TABLE\uff1f”<\/p>\n\n\n\n

90%\u7684\u7a0b\u5e8f\u5458\u4f1a\u72af\u7684\u81f4\u547d\u9519\u8bef\uff1a
\u274c \u5728\u4e1a\u52a1\u9ad8\u5cf0\u65f6\u6bb5\u786c\u4e0a\u5f13
\u274c \u4ee5\u4e3aINPLACE\u7b97\u6cd5\u7edd\u5bf9\u5b89\u5168
\u274c \u6ca1\u914d\u7f6einnodb_online_alter_log_max_size<\/p>\n\n\n\n

\u53bb\u5e74\u53cc\u5341\u4e00\u524d\u5915\uff0c\u67d0\u9152\u5e97\u5546\u65c5\u5e73\u53f0\u6838\u5fc3\u652f\u4ed8\u8868\u7a81\u53d1\u6b7b\u9501\uff0c\u76f4\u63a5\u5bfc\u81f4\u652f\u4ed8\u94fe\u8def\u762b\u75ea30\u5206\u949f\u3002<\/p>\n\n\n\n

\u590d\u76d8\u53d1\u73b0\uff1a\u8fd0\u7ef4\u540c\u5b66\u5728\u665a\u9ad8\u5cf0\u7ed91.2\u4ebf\u884c\u5927\u8868\u52a0\u7d22\u5f15\uff0c\u89e6\u53d1\u5168\u5c40\u9501\u7b49\u5f85<\/strong>\u3002<\/p>\n\n\n\n

\u4f60\u4ee5\u4e3a\u7684\u52a0\u7d22\u5f15<\/strong>\uff1a<\/p>\n\n\n\n

ALTER TABLE user ADD INDEX idx_phone (phone);  -- \u8f7b\u8f7b\u677e\u677e3\u79d2\u5b8c\u6210<\/pre>\n\n\n\n
\u5b9e\u9645\u751f\u4ea7\u73af\u5883\u7684\u53ef\u80fd\u52a0\u7d22\u5f15<\/strong>\uff1a<\/p>\n\n\n
\n
\"\"<\/figure><\/div>\n\n\n
\u5982\u4f55\u5224\u65ad\u4ec0\u4e48\u65f6\u5019\u53ef\u4ee5\u7ed9\u5927\u8868\u52a0\u7d22\u5f15\uff1f<\/strong><\/p>\n\n\n\n
\n\n\n\n
\u968f\u7740\u4e1a\u52a1\u7684\u5feb\u901f\u53d1\u5c55\uff0c\u50cf\u00a0user<\/code>\u00a0\u8fd9\u6837\u7684\u7528\u6237\u8868\u6570\u636e\u91cf\u4e0d\u65ad\u589e\u52a0\uff0c\u53ef\u80fd\u4f60\u5df2\u7ecf\u6ce8\u610f\u5230\u67e5\u8be2\u901f\u5ea6\u53d8\u6162\u4e86\uff0c\u5c24\u5176\u662f\u67d0\u4e9b SQL \u53d8\u6210\u4e86\u201c\u6162\u67e5\u8be2\u201d\u3002<\/p>\n\n\n\n
\u8fd9\u65f6\uff0c\u4f60\u60f3\u901a\u8fc7\u52a0\u7d22\u5f15\u6765\u63d0\u5347\u67e5\u8be2\u6027\u80fd\u3002\u4f46\u522b\u6025\uff0c\u7ed9\u5927\u8868\u52a0\u7d22\u5f15\u53ef\u4e0d\u662f\u8f7b\u677e\u4e8b<\/strong>\uff0c\u4e00\u4e0d\u5c0f\u5fc3\u53ef\u80fd\u4f1a\u8ba9\u6570\u636e\u5e93\u201c\u5d29\u6e83\u201d\u3002<\/p>\n\n\n\n
\u56e0\u4e3a\u7d22\u5f15\u7684\u521b\u5efa\u662fDDL\uff08\u6570\u636e\u5b9a\u4e49\u8bed\u8a00\uff09\u64cd\u4f5c\uff0c\u5b83\u6709\u53ef\u80fd\u5bfc\u81f4\u9501\u8868\uff0c\u963b\u585e\u5176\u4ed6\u64cd\u4f5c\uff0c\u5f71\u54cd\u4e1a\u52a1\u3002<\/p>\n\n\n\n
\u6240\u4ee5\uff0c\u600e\u6837\u624d\u80fd\u5b89\u5168\u5730\u7ed9\u5927\u8868\u52a0\u7d22\u5f15\uff1f\u8fd9\u5c31\u5f97\u597d\u597d\u4e86\u89e3\u4e00\u4e0b\u3002<\/p>\n\n\n\n
\u4e24\u79cd\u7d22\u5f15\u6784\u5efa\u65b9\u5f0f<\/strong><\/p>\n\n\n\n
MySQL \u5728\u6784\u5efa\u7d22\u5f15\u65f6\uff0c\u6709\u4e24\u79cd\u65b9\u5f0f\uff1a\u5728\u7ebf\u6a21\u5f0f<\/strong>\u548c\u79bb\u7ebf\u6a21\u5f0f<\/strong>\u3002<\/p>\n\n\n\n
    \n
  • \u5728\u7ebf\u6a21\u5f0f\uff08Online DDL\uff09<\/strong>\uff1a
    \u8fd9\u79cd\u65b9\u5f0f\u53ef\u4ee5\u5728\u6784\u5efa\u7d22\u5f15\u7684\u540c\u65f6\uff0c\u6570\u636e\u5e93\u4ecd\u7136\u53ef\u4ee5\u8fdb\u884c\u8bfb\u5199\u64cd\u4f5c\uff0c\u5bf9\u4e1a\u52a1\u7684\u5f71\u54cd\u8f83\u5c0f<\/strong>\u3002\u4f46\u4e0d\u662f\u6240\u6709\u6570\u636e\u5e93\u7248\u672c\u548c\u5b58\u50a8\u5f15\u64ce\u90fd\u652f\u6301\u8fd9\u4e2a\u6a21\u5f0f\u3002\u6bd4\u5982\uff0c\u5982\u679c\u4f60\u7684 MySQL \u662f InnoDB \u5b58\u50a8\u5f15\u64ce\u7684\u8f83\u65b0\u7248\u672c\uff0c\u53ef\u4ee5\u901a\u8fc7\u4e00\u4e9b\u8bbe\u7f6e\u542f\u7528\u5728\u7ebf\u6a21\u5f0f\u3002\u4e0d\u8fc7\u5728\u7ebf\u6a21\u5f0f\u4f1a\u6d88\u8017\u66f4\u591a\u7684\u7cfb\u7edf\u8d44\u6e90<\/strong>\uff0c\u8fd9\u70b9\u8981\u6ce8\u610f\u3002<\/li>\n\n\n\n
  • \u79bb\u7ebf\u6a21\u5f0f\uff08Offline DDL\uff09<\/strong>\uff1a
    \u8fd9\u79cd\u65b9\u5f0f\u5728\u6784\u5efa\u7d22\u5f15\u65f6\u4f1a\u9501\u4f4f\u8868\uff0c\u4e0d\u80fd\u8fdb\u884c\u4efb\u4f55\u8bfb\u5199\u64cd\u4f5c<\/strong>\uff0c\u76f4\u5230\u7d22\u5f15\u521b\u5efa\u5b8c\u6210\u3002\u867d\u7136\u8fd9\u79cd\u65b9\u5f0f\u64cd\u4f5c\u7b80\u5355\u76f4\u63a5\uff0c\u4f46\u4f1a\u5bf9\u4e1a\u52a1\u9020\u6210\u6bd4\u8f83\u5927\u7684\u5f71\u54cd\uff0c\u9002\u7528\u4e8e\u53ef\u4ee5\u505c\u673a\u7684\u573a\u666f\u3002\u5982\u679c\u4f60\u7684\u6570\u636e\u5e93\u80fd\u5fcd\u53d7\u4e00\u5b9a\u7684\u505c\u673a\u65f6\u95f4\uff0c\u6216\u8005\u662f\u5728\u4e1a\u52a1\u4f4e\u5cf0\u671f\u52a0\u7d22\u5f15\uff0c\u79bb\u7ebf\u6a21\u5f0f\u4e5f\u662f\u4e00\u4e2a\u9009\u62e9\u3002<\/li>\n<\/ul>\n\n\n\n
    DDL \u548c DML \u5c0f\u77e5\u8bc6<\/strong><\/p>\n\n\n\n
    \u5148\u7ed9\u5927\u5bb6\u8865\u5145\u4e0b\u57fa\u7840\u77e5\u8bc6\uff1a<\/p>\n\n\n\n
      \n
    • DDL\uff08\u6570\u636e\u5b9a\u4e49\u8bed\u8a00\uff09<\/strong>\uff1a\u4e3b\u8981\u7528\u6765\u5b9a\u4e49\u6216\u4fee\u6539\u6570\u636e\u5e93\u7ed3\u6784\uff0c\u6bd4\u5982\u521b\u5efa\u3001\u5220\u9664\u8868\uff0c\u521b\u5efa\u6216\u5220\u9664\u7d22\u5f15\u7b49\u64cd\u4f5c\u3002<\/li>\n\n\n\n
    • DML\uff08\u6570\u636e\u64cd\u4f5c\u8bed\u8a00\uff09<\/strong>\uff1a\u4e3b\u8981\u7528\u6765\u64cd\u4f5c\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\uff0c\u50cf\u63d2\u5165\uff08INSERT\uff09\u3001\u66f4\u65b0\uff08UPDATE\uff09\u548c\u5220\u9664\uff08DELETE\uff09\u8fd9\u4e9b\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n\n\n\n
      \u7d22\u5f15\u5c5e\u4e8e DDL \u64cd\u4f5c\uff0c\u5b83\u662f\u5bf9\u6570\u636e\u5e93\u7ed3\u6784\u7684\u4fee\u6539\uff0c\u6240\u4ee5\u9700\u8981\u7279\u522b\u5c0f\u5fc3\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
      \u8f6c\u8f7d\uff1a\u817e\u8baf\u4e8c\u9762\uff1a1.2 \u4ebf\u7ea7\u5927\u8868, \u5982\u4f55 \u52a0\u7d22\u5f15\uff1f \u80cc\u666f “\u4f60\u4eec\u600e\u4e48\u7ed9\u4ebf\u7ea7\u7528\u6237\u8868\u52a0\u7d22\u5f15\u7684\uff1f\u7ebf\u4e0a\u76f4\u63a5 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23],"tags":[],"_links":{"self":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/17494"}],"collection":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=17494"}],"version-history":[{"count":4,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/17494\/revisions"}],"predecessor-version":[{"id":17499,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/17494\/revisions\/17499"}],"wp:attachment":[{"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=17494"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=17494"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=17494"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}