{"id":2366,"date":"2025-03-04T20:32:53","date_gmt":"2025-03-04T12:32:53","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=2366"},"modified":"2025-03-04T20:32:53","modified_gmt":"2025-03-04T12:32:53","slug":"sqlite-alter-%e5%91%bd%e4%bb%a4","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/03\/04\/sqlite-alter-%e5%91%bd%e4%bb%a4\/","title":{"rendered":"SQLite\u00a0Alter \u547d\u4ee4"},"content":{"rendered":"\n
\n

\u5728 SQLite \u4e2d\uff0cALTER<\/code> \u547d\u4ee4\u7528\u4e8e\u4fee\u6539\u73b0\u6709\u7684\u6570\u636e\u5e93\u5bf9\u8c61\uff0c\u5982\u8868\u3001\u5217\u6216\u7ea6\u675f\u3002\u901a\u8fc7 ALTER<\/code> \u547d\u4ee4\uff0c\u4f60\u53ef\u4ee5\u8fdb\u884c\u4e00\u4e9b\u5e38\u89c1\u7684\u64cd\u4f5c\uff0c\u6bd4\u5982\u6dfb\u52a0\u5217\u3001\u4fee\u6539\u5217\u7684\u540d\u79f0\u3001\u91cd\u547d\u540d\u8868\u7b49\u3002\u7136\u800c\uff0cSQLite \u5bf9 ALTER<\/code> \u547d\u4ee4\u7684\u652f\u6301\u5e76\u4e0d\u50cf\u5176\u4ed6\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff08\u5982 MySQL \u6216 PostgreSQL\uff09\u90a3\u6837\u5168\u9762\uff0c\u4e3b\u8981\u652f\u6301\u4ee5\u4e0b\u51e0\u79cd\u64cd\u4f5c\u3002<\/p>\n<\/blockquote>\n\n\n\n

1. \u91cd\u547d\u540d\u8868\uff08RENAME TABLE<\/code>\uff09<\/h3>\n\n\n\n

\u4f60\u53ef\u4ee5\u4f7f\u7528 ALTER TABLE<\/code> \u547d\u4ee4\u6765\u91cd\u547d\u540d\u4e00\u4e2a\u8868\u3002<\/p>\n\n\n\n

\u8bed\u6cd5<\/strong>\uff1a<\/p>\n\n\n\n

ALTER TABLE old_table_name RENAME TO new_table_name;<\/code><\/pre>\n\n\n\n
\u793a\u4f8b<\/strong>\uff1a<\/p>\n\n\n\n
ALTER TABLE employees RENAME TO staff;<\/code><\/pre>\n\n\n\n
\u8fd9\u4e2a\u547d\u4ee4\u5c06 employees<\/code> \u8868\u91cd\u547d\u540d\u4e3a staff<\/code>\u3002<\/p>\n\n\n\n
2. \u6dfb\u52a0\u5217\uff08ADD COLUMN<\/code>\uff09<\/h3>\n\n\n\n
\u4f60\u53ef\u4ee5\u5411\u73b0\u6709\u8868\u4e2d\u6dfb\u52a0\u65b0\u5217\uff0cSQLite \u53ea\u5141\u8bb8\u4f7f\u7528 ADD COLUMN<\/code> \u6765\u589e\u52a0\u5217\uff0c\u4e0d\u80fd\u5220\u9664\u6216\u4fee\u6539\u73b0\u6709\u7684\u5217\u3002<\/p>\n\n\n\n
\u8bed\u6cd5<\/strong>\uff1a<\/p>\n\n\n\n
ALTER TABLE table_name ADD COLUMN column_name column_definition;<\/code><\/pre>\n\n\n\n
\u793a\u4f8b<\/strong>\uff1a<\/p>\n\n\n\n
ALTER TABLE employees ADD COLUMN hire_date TEXT;<\/code><\/pre>\n\n\n\n
\u8fd9\u4e2a\u547d\u4ee4\u5c06\u5728 employees<\/code> \u8868\u4e2d\u6dfb\u52a0\u4e00\u4e2a\u540d\u4e3a hire_date<\/code> \u7684\u65b0\u5217\uff0c\u7c7b\u578b\u4e3a TEXT<\/code>\u3002<\/p>\n\n\n\n
3. \u4fee\u6539\u5217\uff08ALTER COLUMN<\/code>\uff09- SQLite \u9650\u5236<\/h3>\n\n\n\n
SQLite \u4e0d\u652f\u6301\u76f4\u63a5\u4fee\u6539\u73b0\u6709\u5217\u7684\u540d\u79f0\u3001\u7c7b\u578b\u6216\u7ea6\u675f\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u65e0\u6cd5\u4f7f\u7528 ALTER COLUMN<\/code> \u6765\u4fee\u6539\u73b0\u6709\u5217\u3002<\/p>\n\n\n\n
\u5982\u679c\u4f60\u60f3\u4fee\u6539\u5217\uff0c\u901a\u5e38\u7684\u505a\u6cd5\u662f\uff1a<\/p>\n\n\n\n
    \n
  1. \u521b\u5efa\u4e00\u4e2a\u65b0\u8868\uff0c\u5305\u542b\u6240\u9700\u7684\u5217\u7ed3\u6784\u3002<\/li>\n\n\n\n
  2. \u5c06\u65e7\u8868\u7684\u6570\u636e\u590d\u5236\u5230\u65b0\u8868\u4e2d\u3002<\/li>\n\n\n\n
  3. \u5220\u9664\u65e7\u8868\u3002<\/li>\n\n\n\n
  4. \u5c06\u65b0\u8868\u91cd\u547d\u540d\u4e3a\u65e7\u8868\u7684\u540d\u79f0\u3002<\/li>\n<\/ol>\n\n\n\n
    4. \u5220\u9664\u5217\uff08SQLite \u9650\u5236\uff09<\/h3>\n\n\n\n
    SQLite \u4e0d\u652f\u6301\u5220\u9664\u5217\u3002\u5982\u679c\u4f60\u9700\u8981\u5220\u9664\u5217\uff0c\u53ef\u4ee5\u4f7f\u7528\u7c7b\u4f3c\u4e0a\u9762\u63d0\u5230\u7684\u4fee\u6539\u5217\u7684\u65b9\u6cd5\uff0c\u5373\u521b\u5efa\u65b0\u8868\u5e76\u5c06\u6570\u636e\u8fc1\u79fb\u8fc7\u6765\u3002<\/p>\n\n\n\n
    5. \u5176\u4ed6\u64cd\u4f5c<\/h3>\n\n\n\n
    \u9664\u4e86\u4e0a\u8ff0\u57fa\u672c\u7684 ALTER<\/code> \u64cd\u4f5c\uff0cSQLite \u8fd8\u4e0d\u652f\u6301\u8bb8\u591a\u5176\u4ed6\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\u4e2d\u7684 ALTER<\/code> \u529f\u80fd\uff0c\u5982\u6dfb\u52a0\u7ea6\u675f\u3001\u4fee\u6539\u7ea6\u675f\u3001\u4fee\u6539\u5217\u7c7b\u578b\u7b49\u3002<\/p>\n\n\n\n
    \u793a\u4f8b\uff1a\u6dfb\u52a0\u5217\u548c\u91cd\u547d\u540d\u8868<\/h3>\n\n\n\n
    \u5047\u8bbe\u4f60\u6709\u4e00\u4e2a\u8868 employees<\/code>\uff0c\u5176\u4e2d\u5305\u542b id<\/code>\u3001first_name<\/code> \u548c last_name<\/code> \u5217\u3002\u5982\u679c\u4f60\u60f3\uff1a<\/p>\n\n\n\n
      \n
    1. \u6dfb\u52a0\u4e00\u4e2a hire_date<\/code> \u5217\u3002<\/li>\n\n\n\n
    2. \u5c06\u8868\u91cd\u547d\u540d\u4e3a staff<\/code>\u3002<\/li>\n<\/ol>\n\n\n\n
      \u53ef\u4ee5\u4f9d\u6b21\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n\n\n\n
      ALTER TABLE employees ADD COLUMN hire_date TEXT;\nALTER TABLE employees RENAME TO staff;<\/code><\/pre>\n\n\n\n
      6. \u603b\u7ed3<\/h3>\n\n\n\n
        \n
      • \u91cd\u547d\u540d\u8868<\/strong>\uff1a\u4f7f\u7528 ALTER TABLE table_name RENAME TO new_name<\/code>\u3002<\/li>\n\n\n\n
      • \u6dfb\u52a0\u5217<\/strong>\uff1a\u4f7f\u7528 ALTER TABLE table_name ADD COLUMN column_name column_definition<\/code>\u3002<\/li>\n\n\n\n
      • \u4fee\u6539\u5217\u6216\u5220\u9664\u5217<\/strong>\uff1aSQLite \u4e0d\u652f\u6301\u76f4\u63a5\u4fee\u6539\u6216\u5220\u9664\u5217\uff0c\u9700\u8981\u901a\u8fc7\u521b\u5efa\u65b0\u8868\u5e76\u8fc1\u79fb\u6570\u636e\u6765\u5b9e\u73b0\u3002<\/li>\n<\/ul>\n\n\n\n
        \u7531\u4e8e SQLite \u5bf9 ALTER<\/code> \u547d\u4ee4\u7684\u652f\u6301\u6bd4\u8f83\u6709\u9650\uff0c\u5982\u679c\u9700\u8981\u8fdb\u884c\u66f4\u590d\u6742\u7684\u7ed3\u6784\u4fee\u6539\uff0c\u901a\u5e38\u9700\u8981\u624b\u52a8\u521b\u5efa\u65b0\u8868\u548c\u8fc1\u79fb\u6570\u636e\u3002\u66f4\u591a\u8be6\u7ec6\u5185\u5bb9\u8bf7\u5173\u6ce8\u5176\u4ed6\u76f8\u5173\u6587\u7ae0\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
        \u5728 SQLite \u4e2d\uff0cALTER \u547d\u4ee4\u7528\u4e8e\u4fee\u6539\u73b0\u6709\u7684\u6570\u636e\u5e93\u5bf9\u8c61\uff0c\u5982\u8868\u3001\u5217\u6216\u7ea6\u675f\u3002\u901a\u8fc7 ALTER \u547d\u4ee4\uff0c\u4f60\u53ef\u4ee5 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[76],"tags":[],"class_list":["post-2366","post","type-post","status-publish","format-standard","hentry","category-sqlite"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2366","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/comments?post=2366"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2366\/revisions"}],"predecessor-version":[{"id":2367,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2366\/revisions\/2367"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=2366"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=2366"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=2366"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}