{"id":160797,"date":"2024-11-04T01:05:25","date_gmt":"2024-11-03T17:05:25","guid":{"rendered":"https:\/\/server.hk\/cnblog\/160797\/"},"modified":"2024-11-04T01:05:26","modified_gmt":"2024-11-03T17:05:26","slug":"%e8%b3%87%e6%96%99%e5%ba%ab%e6%95%99%e7%a8%8b%ef%bc%9amysql-%e6%95%b8%e6%93%9a%e8%a1%a8%e6%b7%bb%e5%8a%a0%e5%ad%97%e6%ae%b5%ef%bc%88%e4%b8%89%e7%a8%ae%e6%96%b9%e5%bc%8f%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/160797\/","title":{"rendered":"\u8cc7\u6599\u5eab\u6559\u7a0b\uff1aMySQL \u6578\u64da\u8868\u6dfb\u52a0\u5b57\u6bb5\uff08\u4e09\u7a2e\u65b9\u5f0f\uff09"},"content":{"rendered":"

\u8cc7\u6599\u5eab\u6559\u7a0b\uff1aMySQL \u6578\u64da\u8868\u6dfb\u52a0\u5b57\u6bb5\uff08\u4e09\u7a2e\u65b9\u5f0f\uff09<\/h1>\n

\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0cMySQL \u662f\u4e00\u500b\u5ee3\u6cdb\u4f7f\u7528\u7684\u95dc\u806f\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u3002\u96a8\u8457\u61c9\u7528\u7a0b\u5e8f\u7684\u767c\u5c55\uff0c\u6578\u64da\u8868\u7684\u7d50\u69cb\u53ef\u80fd\u9700\u8981\u8abf\u6574\uff0c\u9019\u6642\u6dfb\u52a0\u5b57\u6bb5\u4fbf\u6210\u70ba\u4e00\u500b\u5e38\u898b\u7684\u9700\u6c42\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u4e09\u7a2e\u5728 MySQL \u4e2d\u6dfb\u52a0\u5b57\u6bb5\u7684\u65b9\u6cd5\uff0c\u5e6b\u52a9\u60a8\u66f4\u6709\u6548\u5730\u7ba1\u7406\u6578\u64da\u5eab\u3002<\/p>\n

\u65b9\u6cd5\u4e00\uff1a\u4f7f\u7528 ALTER TABLE \u8a9e\u53e5<\/h2>\n

\u6700\u5e38\u898b\u7684\u65b9\u5f0f\u662f\u4f7f\u7528 ALTER TABLE<\/code> \u8a9e\u53e5\u3002\u9019\u7a2e\u65b9\u6cd5\u53ef\u4ee5\u9748\u6d3b\u5730\u5728\u73fe\u6709\u7684\u6578\u64da\u8868\u4e2d\u6dfb\u52a0\u65b0\u5b57\u6bb5\u3002\u4ee5\u4e0b\u662f\u57fa\u672c\u7684\u8a9e\u6cd5\uff1a<\/p>\n

ALTER TABLE \u8868\u540d ADD COLUMN \u65b0\u5b57\u6bb5\u540d \u6578\u64da\u985e\u578b;<\/code><\/pre>\n
\u4f8b\u5982\uff0c\u5982\u679c\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba users<\/code> \u7684\u8868\uff0c\u4e26\u5e0c\u671b\u6dfb\u52a0\u4e00\u500b\u540d\u70ba age<\/code> \u7684\u6574\u6578\u5b57\u6bb5\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n
ALTER TABLE users ADD COLUMN age INT;<\/code><\/pre>\n
\u9019\u6a23\u5c31\u6703\u5728 users<\/code> \u8868\u4e2d\u6dfb\u52a0\u4e00\u500b\u540d\u70ba age<\/code> \u7684\u6574\u6578\u985e\u578b\u5b57\u6bb5\u3002<\/p>\n
\u65b9\u6cd5\u4e8c\uff1a\u4f7f\u7528 CREATE TABLE \u8a9e\u53e5<\/h2>\n
\u53e6\u4e00\u7a2e\u65b9\u6cd5\u662f\u901a\u904e\u91cd\u65b0\u5275\u5efa\u8868\u4f86\u6dfb\u52a0\u5b57\u6bb5\u3002\u9019\u7a2e\u65b9\u6cd5\u9069\u5408\u65bc\u9700\u8981\u5927\u898f\u6a21\u66f4\u6539\u8868\u7d50\u69cb\u7684\u60c5\u6cc1\u3002\u9996\u5148\uff0c\u60a8\u9700\u8981\u5275\u5efa\u4e00\u500b\u65b0\u7684\u8868\uff0c\u7136\u5f8c\u5c07\u820a\u8868\u4e2d\u7684\u6578\u64da\u63d2\u5165\u5230\u65b0\u8868\u4e2d\uff0c\u6700\u5f8c\u522a\u9664\u820a\u8868\u4e26\u91cd\u547d\u540d\u65b0\u8868\u3002\u4ee5\u4e0b\u662f\u6b65\u9a5f\uff1a<\/p>\n
    \n
  1. \u5275\u5efa\u65b0\u8868\uff0c\u5305\u542b\u6240\u9700\u7684\u6240\u6709\u5b57\u6bb5\uff1a<\/li>\n
    CREATE TABLE new_users (\n        id INT PRIMARY KEY,\n        name VARCHAR(100),\n        age INT\n    );<\/code><\/pre>\n
  2. \u5c07\u820a\u8868\u4e2d\u7684\u6578\u64da\u63d2\u5165\u65b0\u8868\uff1a<\/li>\n
    INSERT INTO new_users (id, name)\n    SELECT id, name FROM users;<\/code><\/pre>\n
  3. \u522a\u9664\u820a\u8868\uff1a<\/li>\n
    DROP TABLE users;<\/code><\/pre>\n
  4. \u5c07\u65b0\u8868\u91cd\u547d\u540d\u70ba\u820a\u8868\u7684\u540d\u7a31\uff1a<\/li>\n
    ALTER TABLE new_users RENAME TO users;<\/code><\/pre>\n<\/ol>\n
    \u9019\u7a2e\u65b9\u6cd5\u96d6\u7136\u8f03\u70ba\u7e41\u7463\uff0c\u4f46\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\u53ef\u4ee5\u66f4\u9748\u6d3b\u5730\u8abf\u6574\u8868\u7d50\u69cb\u3002<\/p>\n
    \u65b9\u6cd5\u4e09\uff1a\u4f7f\u7528 phpMyAdmin<\/h2>\n
    \u5c0d\u65bc\u4e0d\u719f\u6089 SQL \u8a9e\u53e5\u7684\u7528\u6236\uff0c\u4f7f\u7528\u5716\u5f62\u754c\u9762\u7684\u5de5\u5177\u5982 phpMyAdmin \u4e5f\u662f\u4e00\u500b\u4e0d\u932f\u7684\u9078\u64c7\u3002\u4ee5\u4e0b\u662f\u901a\u904e phpMyAdmin \u6dfb\u52a0\u5b57\u6bb5\u7684\u6b65\u9a5f\uff1a<\/p>\n
      \n
    1. \u767b\u9304\u5230 phpMyAdmin\uff0c\u9078\u64c7\u8981\u4fee\u6539\u7684\u6578\u64da\u5eab\u3002<\/li>\n
    2. \u9ede\u64ca\u8981\u6dfb\u52a0\u5b57\u6bb5\u7684\u8868\u540d\u3002<\/li>\n
    3. \u9078\u64c7\u300c\u7d50\u69cb\u300d\u9078\u9805\u5361\u3002<\/li>\n
    4. \u5728\u9801\u9762\u5e95\u90e8\uff0c\u60a8\u6703\u770b\u5230\u300c\u6dfb\u52a0\u5b57\u6bb5\u300d\u7684\u9078\u9805\uff0c\u8f38\u5165\u65b0\u5b57\u6bb5\u7684\u540d\u7a31\u548c\u6578\u64da\u985e\u578b\u3002<\/li>\n
    5. \u9ede\u64ca\u300c\u57f7\u884c\u300d\u4ee5\u4fdd\u5b58\u66f4\u6539\u3002<\/li>\n<\/ol>\n
      \u9019\u7a2e\u65b9\u6cd5\u76f4\u89c0\u6613\u7528\uff0c\u9069\u5408\u521d\u5b78\u8005\u548c\u4e0d\u719f\u6089\u547d\u4ee4\u884c\u7684\u7528\u6236\u3002<\/p>\n
      \u7e3d\u7d50<\/h2>\n
      \u5728 MySQL \u4e2d\u6dfb\u52a0\u5b57\u6bb5\u7684\u65b9\u6cd5\u6709\u591a\u7a2e\uff0c\u6700\u5e38\u7528\u7684\u5305\u62ec\u4f7f\u7528 ALTER TABLE<\/code> \u8a9e\u53e5\u3001\u91cd\u65b0\u5275\u5efa\u8868\u4ee5\u53ca\u4f7f\u7528 phpMyAdmin \u7b49\u5716\u5f62\u754c\u9762\u5de5\u5177\u3002\u6839\u64da\u5177\u9ad4\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u6578\u64da\u5eab\u7d50\u69cb\u3002\u5982\u679c\u60a8\u9700\u8981\u7a69\u5b9a\u7684 \u9999\u6e2fVPS<\/a> \u4f86\u904b\u884c\u60a8\u7684\u6578\u64da\u5eab\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u89e3\u6c7a\u65b9\u6848\uff0c\u6eff\u8db3\u4e0d\u540c\u7528\u6236\u7684\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
      \u5b78\u7fd2\u5982\u4f55\u5728 MySQL \u6578\u64da\u8868\u4e2d\u6dfb\u52a0\u5b57\u6bb5\uff0c\u63a2\u7d22\u4e09\u7a2e\u7c21\u55ae\u6709\u6548\u7684\u65b9\u6cd5\uff0c\u63d0\u5347\u4f60\u7684\u8cc7\u6599\u5eab\u7ba1\u7406\u6280\u80fd\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-160797","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160797","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=160797"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160797\/revisions"}],"predecessor-version":[{"id":160798,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160797\/revisions\/160798"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=160797"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=160797"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=160797"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}