\u6709\u5f88\u591a\u79cd\u65b9\u6cd5\u53ef\u4ee5\u5c06\u8868\u7684\u5b58\u50a8\u5f15\u64ce\u8f6c\u6362\u6210\u53e6\u4e00\u79cd\u5f15\u64ce\u3002\u6bcf\u79cd\u65b9\u6cd5\u90fd\u6709\u5176\u4f18\u7f3a\u70b9\uff0c\u5728\u8fd9\u91cc\u4ecb\u7ecd\u56db\u79cd\u65b9\u6cd5\uff1a<\/p>\n
\u9009\u62e9\u4f18\u5148\u7ea7\uff08pt-online-schema-change > \u521b\u5efa\u4e0e\u67e5\u8be2 > \u5bfc\u51fa\u548c\u5bfc\u5165 > ALTER TABLE\uff09\u3002<\/p>\n
\u2022ALTER TABLE<\/p>\n
\u5c06\u8868\u4ece\u4e00\u4e2a\u5f15\u64ce\u4fee\u6539\u4e3a\u53e6\u4e00\u4e2a\u5f15\u64ce\u6700\u7b80\u5355\u7684\u65b9\u6cd5\u662f\u4f7f\u7528ALTER TABLE\u8bed\u53e5\u3002\u4e0b\u9762\u7684\u8bed\u53e5\u5c06TB\u8868\u7684\u5f15\u64ce\u4fee\u6539\u4e3aInnoDB\uff1a<\/p>\n
mysql> ALTER TABLE TB ENGINE = InnoDB;<\/p>\n
PS\uff1a\u8be5\u65b9\u6cd5\u9002\u7528\u4e8e\u4efb\u4f55\u5b58\u50a8\u5f15\u64ce\u3002\u4f46\u6709\u4e00\u4e2a\u95ee\u9898\uff1a\u9700\u8981\u5f88\u957f\u7684\u6267\u884c\u65f6\u95f4\u3002<\/p>\n
MySQL\u4f1a\u6309\u884c\u5c06\u6570\u636e\u5e93\u4ece\u539f\u8868\u590d\u5236\u5230\u4e00\u5f20\u65b0\u7684\u8868\u4e2d\uff0c\u5728\u590d\u5236\u671f\u95f4\u53ef\u80fd\u4f1a\u6d88\u8017\u7cfb\u7edf\u6240\u6709\u7684I\/O\u80fd\u529b\uff0c\u540c\u65f6\u539f\u8868\u4e0a\u4f1a\u52a0\u4e0a\u8bfb\u9501\u3002<\/p>\n
\u2022\u5bfc\u51fa\u548c\u5bfc\u5165\uff08mysqldump\uff09<\/p>\n
\u4e3a\u4e86\u66f4\u597d\u7684\u63a7\u5236\u8f6c\u6362\u7684\u8fc7\u7a0b\uff0c\u53ef\u4ee5\u4f7f\u7528mysqldump\u5de5\u5177\u5c06\u6570\u636e\u5bfc\u51fa\u5230\u6587\u4ef6\uff0c\u7136\u540e\u4fee\u6539\u6587\u4ef6\u4e2dCREATE TABLE\u8bed\u53e5\u7684\u5b58\u50a8\u5f15\u64ce\u9009\u9879\uff0c\u6ce8\u610f\u540c\u65f6\u4fee\u6539\u8868\u540d\uff0c\u56e0\u4e3a\u540c\u4e00\u4e2a\u6570\u636e\u5e93\u4e2d\u4e0d\u80fd\u5b58\u5728\u76f8\u540c\u7684\u8868\u540d\uff0c\u5373\u4f7f\u4ed6\u4eec\u4f7f\u7528\u7684\u662f\u4e0d\u540c\u7684\u5b58\u50a8\u5f15\u64ce\u3002<\/p>\n
PS\uff1amysqldump\u9ed8\u8ba4\u4f1a\u81ea\u52a8\u5728CREATE TABLE\u8bed\u53e5\u524d\u52a0\u4e0aDROP TABLE\u8bed\u53e5\uff0c\u4e0d\u6ce8\u610f\u8fd9\u4e00\u70b9\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6570\u636e\u4e22\u5931\u3002<\/p>\n
1\u3001\u4e0b\u9762\u7684\u8bed\u53e5\u5c06DB\u5e93\u4e2d\u7684TB\u8868\u6570\u636e\u5bfc\u51fa\u5230tb.sql\u6587\u4ef6\u4e2d\uff1a<\/p>\n
[root@desktop]# mysqldump -u root -p DB TB > tb.sql<\/p>\n
2\u3001\u4fee\u6539tb.sql\u6587\u4ef6\uff08\u5982\u679c\u9700\u8981\u5907\u4efdTB\u8868\uff0c\u8bf7\u66f4\u6539\u8868\u540d\uff09\uff1a<\/p>\n
CREATE TABLE `TB` (
\n`name` char(1) DEFAULT NULL
\n) ENGINE=InnoDB DEFAULT CHARSET=utf8;<\/p>\n
3\u3001\u4e0b\u9762\u7684\u8bed\u53e5\u5c06tb.sql\u6587\u4ef6\u5bfc\u5165\u5230DB\u5e93\u4e2d\uff1a<\/p>\n
[root@desktop]# mysql -u root -p DB < tb.sql
\n\u2022\u521b\u5efa\u4e0e\u67e5\u8be2\uff08CREATE \u548c SELECT\uff09<\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u7efc\u5408\u7b2c\u4e00\u79cd\u65b9\u6cd5\u7684\u9ad8\u6548\u548c\u7b2c\u4e8c\u79cd\u65b9\u6cd5\u7684\u5b89\u5168\u3002\u4e0d\u9700\u8981\u5bfc\u51fa\u6574\u4e2a\u8868\u7684\u6570\u636e\uff0c\u800c\u662f\u9996\u5148\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u5b58\u50a8\u5f15\u64ce\u7684\u8868\uff0c\u7136\u540e\u5229\u7528INSERT…SELECT\u8bed\u6cd5\u6765\u5bfc\u6570\u636e\uff1a<\/p>\n
\u6570\u636e\u91cf\u4e0d\u5927\u4f7f\u7528\u4ee5\u4e0b\u8bed\u53e5\uff1a<\/p>\n
mysql > CREATE TABLE TB2 like TB1;
\nmysql > ALTER TABLE TB2 ENGINE=InnoDB;
\nmysql > INSERT INTO TB2 SELECT * FROM TB1;
\n\u6570\u636e\u91cf\u5927\u4f7f\u7528\u4ee5\u4e0b\u8bed\u53e5\uff1a<\/p>\n
mysql > CREATE TABLE TB2 like TB1;
\nmysql > ALTER TABLE TB2 ENGINE=InnoDB;
\nmysql > START TRANSACTION;
\nmysql > INSERT INTO TB2 SELECT * FROM TB1 WHERE id BETWEEN x AND y;
\nmysql > COMMIT;<\/p>\n
PS\uff1a\u8fd9\u6837\u7684\u64cd\u4f5c\u5b8c\u6210\u540e\uff0c\u65b0\u8868\u662f\u539f\u8868\u7684\u4e00\u4e2a\u5168\u91cf\u590d\u5236\uff0c\u539f\u8868\u8fd8\u5728\uff0c\u5982\u9700\u8981\u53ef\u4ee5\u5220\u9664\u539f\u8868\u3002<\/p>\n
\u5982\u679c\u6709\u5fc5\u8981\uff0c\u53ef\u4ee5\u5728\u6267\u884c\u7684\u8fc7\u7a0b\u4e2d\u5bf9\u539f\u8868\u8fdb\u884c\u52a0\u9501\uff0c\u4ee5\u786e\u4fdd\u65b0\u8868\u548c\u539f\u8868\u7684\u6570\u636e\u4e00\u81f4\u3002<\/p>\n
\u2022\u4f7f\u7528Percona Toolkit\u63d0\u4f9b\u7684pt-online-schema-change\u5de5\u5177\uff1a<\/p>\n
\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u53ef\u5c06DB\u5e93\u4e2d\u7684TB1\u8868\u8f6c\u6362\u6210InnoDB\uff1a<\/p>\n
[root@desktop]# pt-online-schema-change -u root -h 127.0.0.1 -p 123456 –alter=’ENGINE=Innodb’ –execute A=utf8,D=DB,t=TB1<\/p>\n
\u6267\u884c\u6210\u529f\u540e\u4f1a\u6709\u5982\u4e0b\u63d0\u793a\uff1a<\/p>\n
Successfully altered `DB`.`TB1`.<\/p>\n
PS\uff1a\u539f\u7406\u4e3a\u521b\u5efa\u4e34\u65f6\u8868->\u4fee\u6539\u4fee\u6539\u7ed3\u6784->\u8bb0\u5f55\u6570\u636e->\u5220\u6389\u539f\u8868->\u91cd\u547d\u540d\u4e34\u65f6\u8868<\/p>\n","protected":false},"excerpt":{"rendered":"
\u6709\u5f88\u591a\u79cd\u65b9\u6cd5\u53ef\u4ee5\u5c06\u8868\u7684\u5b58\u50a8\u5f15\u64ce\u8f6c\u6362\u6210\u53e6\u4e00\u79cd\u5f15\u64ce\u3002\u6bcf\u79cd\u65b9\u6cd5\u90fd\u6709\u5176\u4f18\u7f3a\u70b9\uff0c\u5728\u8fd9\u91cc\u4ecb\u7ecd\u56db\u79cd\u65b9\u6cd5\uff1a \u9009\u62e9\u4f18\u5148\u7ea7\uff08pt- … \u9605\u8bfb\u66f4\u591a<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[10],"tags":[45],"class_list":["post-3101","post","type-post","status-publish","format-standard","hentry","category-shujuku","tag-mysql"],"aioseo_notices":[],"jetpack_featured_media_url":"","jetpack-related-posts":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/3101","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/comments?post=3101"}],"version-history":[{"count":1,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/3101\/revisions"}],"predecessor-version":[{"id":3102,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/3101\/revisions\/3102"}],"wp:attachment":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/media?parent=3101"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/categories?post=3101"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/tags?post=3101"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}