{"id":200037,"date":"2025-05-06T10:49:48","date_gmt":"2025-05-06T02:49:48","guid":{"rendered":"https:\/\/server.hk\/cnblog\/200037\/"},"modified":"2025-05-06T10:49:48","modified_gmt":"2025-05-06T02:49:48","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8%e5%94%af%e4%b8%80%e7%b4%a2%e5%bc%95%e5%9c%a8mysql%e4%b8%ad%e7%a1%ae%e4%bf%9d%e6%95%b0%e6%8d%ae%e7%9a%84%e5%94%af%e4%b8%80%e6%80%a7","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/200037\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528\u552f\u4e00\u7d22\u5f15\u5728MySQL\u4e2d\u786e\u4fdd\u6570\u636e\u7684\u552f\u4e00\u6027"},"content":{"rendered":"

<\/b> <\/p>\n

\u5982\u4f55\u4f7f\u7528\u552f\u4e00\u7d22\u5f15\u5728MySQL\u4e2d\u786e\u4fdd\u6570\u636e\u7684\u552f\u4e00\u6027<\/h1>\n

\u5927\u5bb6\u597d\uff0c\u6211\u4eec\u53c8\u89c1\u9762\u4e86\u554a~\u672c\u6587\u7684\u5185\u5bb9\u4e2d\u5c06\u4f1a\u6d89\u53ca\u5230\u7b49\u7b49\u3002\u5982\u679c\u4f60\u6b63\u5728\u5b66\u4e60\u76f8\u5173\u77e5\u8bc6\uff0c\u6b22\u8fce\u5173\u6ce8\u6211\uff0c\u4ee5\u540e\u4f1a\u7ed9\u5927\u5bb6\u5e26\u6765\u66f4\u591a\u76f8\u5173\u6587\u7ae0\uff0c\u5e0c\u671b\u6211\u4eec\u80fd\u4e00\u8d77\u8fdb\u6b65\uff01\u4e0b\u9762\u5c31\u5f00\u59cb\u672c\u6587\u7684\u6b63\u5f0f\u5185\u5bb9~<\/p>\n

\u6807\u9898\uff1aMySQL\u4e2d\u521b\u5efa\u552f\u4e00\u7d22\u5f15\u6765\u786e\u4fdd\u6570\u636e\u552f\u4e00\u6027\u7684\u65b9\u6cd5\u53ca\u4ee3\u7801\u793a\u4f8b<\/p>\n

\u5728\u6570\u636e\u5e93\u8bbe\u8ba1\u4e2d\uff0c\u786e\u4fdd\u6570\u636e\u7684\u552f\u4e00\u6027\u662f\u975e\u5e38\u91cd\u8981\u7684\uff0c\u53ef\u4ee5\u901a\u8fc7\u5728MySQL\u4e2d\u521b\u5efa\u552f\u4e00\u7d22\u5f15\u6765\u5b9e\u73b0\u3002\u552f\u4e00\u7d22\u5f15\u53ef\u4ee5\u4fdd\u8bc1\u8868\u4e2d\u67d0\u5217\uff08\u6216\u5217\u7ec4\u5408\uff09\u7684\u6570\u503c\u662f\u552f\u4e00\u7684\uff0c\u5982\u679c\u5c1d\u8bd5\u63d2\u5165\u91cd\u590d\u503c\uff0cMySQL\u4f1a\u963b\u6b62\u8fd9\u79cd\u64cd\u4f5c\u5e76\u62a5\u9519\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u5728MySQL\u4e2d\u521b\u5efa\u552f\u4e00\u7d22\u5f15\uff0c\u540c\u65f6\u63d0\u4f9b\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n

\u4ec0\u4e48\u662f\u552f\u4e00\u7d22\u5f15<\/h3>\n

\u552f\u4e00\u7d22\u5f15\u662f\u4e00\u79cd\u7d22\u5f15\u7c7b\u578b\uff0c\u5b83\u8981\u6c42\u6240\u6709\u7684\u88ab\u7d22\u5f15\u7684\u5217\u7684\u503c\u662f\u552f\u4e00\u7684\u3002\u5728MySQL\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u5728CREATE TABLE\u8bed\u53e5\u4e2d\u7684UNIQUE\u5173\u952e\u5b57\u6765\u521b\u5efa\u552f\u4e00\u7d22\u5f15\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528ALTER TABLE\u8bed\u53e5\u6765\u4e3a\u5df2\u6709\u8868\u6dfb\u52a0\u552f\u4e00\u7d22\u5f15\u3002<\/p>\n

\u552f\u4e00\u7d22\u5f15\u4e3b\u8981\u7528\u4e8e\u786e\u4fdd\u8868\u4e2d\u7684\u67d0\u4e00\u5217\uff08\u6216\u5217\u7ec4\u5408\uff09\u7684\u6570\u503c\u4e0d\u91cd\u590d\uff0c\u5e38\u7528\u4e8e\u7ea6\u675f\u4e3b\u952e\u548c\u552f\u4e00\u7d22\u5f15\u7b49\u573a\u666f\u3002<\/p>\n

\u5982\u4f55\u5728MySQL\u4e2d\u521b\u5efa\u552f\u4e00\u7d22\u5f15<\/h3>\n

1. \u4f7f\u7528CREATE TABLE\u8bed\u53e5\u521b\u5efa\u8868\u65f6\u6dfb\u52a0\u552f\u4e00\u7d22\u5f15<\/h4>\n

\u5728\u521b\u5efa\u8868\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\u4e3a\u67d0\u5217\u6dfb\u52a0\u552f\u4e00\u7d22\u5f15\uff1a<\/p>\n

CREATE TABLE table_name (\n    column_name data_type UNIQUE,\n    ...\n);<\/pre>\n
\u4f8b\u5982\uff0c\u521b\u5efa\u4e00\u4e2a\u540d\u4e3auser\u7684\u8868\uff0c\u786e\u4fddemail\u5217\u4e2d\u7684\u503c\u552f\u4e00\uff1a<\/p>\n
CREATE TABLE user (\n    id INT PRIMARY KEY,\n    username VARCHAR(50),\n    email VARCHAR(50) UNIQUE,\n    ...\n);<\/pre>\n
2. \u4f7f\u7528ALTER TABLE\u8bed\u53e5\u4e3a\u5df2\u6709\u8868\u6dfb\u52a0\u552f\u4e00\u7d22\u5f15<\/h4>\n
\u5982\u679c\u5df2\u6709\u8868\u9700\u8981\u6dfb\u52a0\u552f\u4e00\u7d22\u5f15\uff0c\u53ef\u4ee5\u4f7f\u7528ALTER TABLE\u8bed\u53e5\u6765\u5b9e\u73b0\uff1a<\/p>\n
ALTER TABLE table_name ADD UNIQUE (column_name);<\/pre>\n
\u4f8b\u5982\uff0c\u4e3auser\u8868\u7684email\u5217\u6dfb\u52a0\u552f\u4e00\u7d22\u5f15\uff1a<\/p>\n
ALTER TABLE user ADD UNIQUE (email);<\/pre>\n
\u793a\u4f8b\uff1a\u5728MySQL\u4e2d\u521b\u5efa\u552f\u4e00\u7d22\u5f15<\/h3>\n
\u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u540d\u4e3astudent\u7684\u8868\uff0c\u5305\u542b\u5b66\u751f\u7684\u5b66\u53f7\uff08id\uff09\u548c\u59d3\u540d\uff08name\uff09\u4e24\u5217\u3002\u73b0\u5728\u8981\u786e\u4fdd\u5b66\u53f7\u662f\u552f\u4e00\u7684\uff0c\u6211\u4eec\u53ef\u4ee5\u4e3aid\u5217\u521b\u5efa\u4e00\u4e2a\u552f\u4e00\u7d22\u5f15\u3002<\/p>\n
\u9996\u5148\uff0c\u521b\u5efastudent\u8868\u5e76\u4e3aid\u5217\u6dfb\u52a0\u552f\u4e00\u7d22\u5f15\u7684SQL\u5982\u4e0b\uff1a<\/p>\n
CREATE TABLE student (\n    id INT UNIQUE,\n    name VARCHAR(50),\n    ...\n);<\/pre>\n
\u6267\u884c\u4ee5\u4e0aSQL\u8bed\u53e5\uff0c\u5373\u53ef\u521b\u5efa\u5e26\u6709\u552f\u4e00\u7d22\u5f15\u7684student\u8868\u3002\u8fd9\u6837\uff0c\u63d2\u5165\u91cd\u590d\u5b66\u53f7\u7684\u8bb0\u5f55\u5c06\u4f1a\u88abMySQL\u62d2\u7edd\u3002<\/p>\n
\u603b\u7ed3<\/h3>\n
\u901a\u8fc7\u5728MySQL\u4e2d\u521b\u5efa\u552f\u4e00\u7d22\u5f15\uff0c\u53ef\u4ee5\u786e\u4fdd\u8868\u4e2d\u7684\u67d0\u4e00\u5217\uff08\u6216\u5217\u7ec4\u5408\uff09\u7684\u6570\u503c\u662f\u552f\u4e00\u7684\uff0c\u8fd9\u5bf9\u6570\u636e\u7684\u5b8c\u6574\u6027\u548c\u51c6\u786e\u6027\u975e\u5e38\u91cd\u8981\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u6839\u636e\u5177\u4f53\u7684\u9700\u6c42\u548c\u4e1a\u52a1\u573a\u666f\u6765\u5408\u7406\u4f7f\u7528\u552f\u4e00\u7d22\u5f15\uff0c\u4fdd\u62a4\u6570\u636e\u7684\u4e00\u81f4\u6027\u548c\u51c6\u786e\u6027\u3002<\/p>\n
\u5e0c\u671b\u672c\u6587\u5bf9\u4f60\u5728MySQL\u4e2d\u521b\u5efa\u552f\u4e00\u7d22\u5f15\u6709\u6240\u5e2e\u52a9\uff0c\u987a\u5229\u5e94\u7528\u5230\u5b9e\u9645\u5f00\u53d1\u4e2d\uff01<\/p>\n
\u5230\u8fd9\u91cc\uff0c\u6211\u4eec\u4e5f\u5c31\u8bb2\u5b8c\u4e86\u300a\u5982\u4f55\u4f7f\u7528\u552f\u4e00\u7d22\u5f15\u5728MySQL\u4e2d\u786e\u4fdd\u6570\u636e\u7684\u552f\u4e00\u6027\u300b\u7684\u5185\u5bb9\u4e86\u3002\u4e2a\u4eba\u8ba4\u4e3a\uff0c\u57fa\u7840\u77e5\u8bc6\u7684\u5b66\u4e60\u548c\u5de9\u56fa\uff0c\u662f\u4e3a\u4e86\u66f4\u597d\u7684\u5c06\u5176\u8fd0\u7528\u5230\u9879\u76ee\u4e2d\uff0c\u6b22\u8fce\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\uff0c\u5e26\u4f60\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u6570\u636e\u552f\u4e00\u6027,MySQL\u7d22\u5f15,\u552f\u4e00\u7d22\u5f15\u7684\u77e5\u8bc6\u70b9\uff01<\/p>\n
\n
\n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
\u5982\u4f55\u4f7f\u7528\u552f\u4e00\u7d22\u5f15\u5728MySQL\u4e2d\u786e...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-200037","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200037","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=200037"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200037\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=200037"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=200037"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=200037"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}