{"id":166681,"date":"2024-11-05T18:31:22","date_gmt":"2024-11-05T10:31:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/166681\/"},"modified":"2024-11-05T18:31:23","modified_gmt":"2024-11-05T10:31:23","slug":"%e5%bf%ab%e9%80%9f%e6%8e%8c%e6%8f%a1sql%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8%e7%9a%84%e5%89%b5%e5%bb%ba-sql%e5%89%b5%e5%bb%ba%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/166681\/","title":{"rendered":"\u5feb\u901f\u638c\u63e1SQL\u6578\u64da\u5eab\u8868\u7684\u5275\u5efa (sql\u5275\u5efa\u6578\u64da\u5eab\u8868)"},"content":{"rendered":"<h1 id=\"%e5%bf%ab%e9%80%9f%e6%8e%8c%e6%8f%a1sql%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8%e7%9a%84%e5%89%b5%e5%bb%ba-sql%e5%89%b5%e5%bb%ba%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8-avsBBVrCYY\">\u5feb\u901f\u638c\u63e1SQL\u6578\u64da\u5eab\u8868\u7684\u5275\u5efa (SQL\u5275\u5efa\u6578\u64da\u5eab\u8868)<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0cSQL\uff08\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff09\u662f\u7ba1\u7406\u548c\u64cd\u4f5c\u6578\u64da\u5eab\u7684\u6838\u5fc3\u5de5\u5177\u4e4b\u4e00\u3002\u7121\u8ad6\u662f\u958b\u767c\u61c9\u7528\u7a0b\u5e8f\u9084\u662f\u9032\u884c\u6578\u64da\u5206\u6790\uff0c\u638c\u63e1SQL\u7684\u57fa\u672c\u64cd\u4f5c\u90fd\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u5982\u4f55\u5feb\u901f\u5275\u5efaSQL\u6578\u64da\u5eab\u8868\uff0c\u4e26\u63d0\u4f9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\uff0c\u5e6b\u52a9\u8b80\u8005\u66f4\u597d\u5730\u7406\u89e3\u9019\u4e00\u904e\u7a0b\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8%ef%bc%9f-avsBBVrCYY\">\u4ec0\u9ebc\u662f\u6578\u64da\u5eab\u8868\uff1f<\/h2>\n<p>\u6578\u64da\u5eab\u8868\u662f\u6578\u64da\u5eab\u4e2d\u7528\u4f86\u5b58\u5132\u6578\u64da\u7684\u57fa\u672c\u7d50\u69cb\u3002\u6bcf\u500b\u8868\u7531\u884c\u548c\u5217\u7d44\u6210\uff0c\u5176\u4e2d\u884c\u4ee3\u8868\u8a18\u9304\uff0c\u5217\u5247\u4ee3\u8868\u8a18\u9304\u7684\u5c6c\u6027\u3002\u8209\u4f8b\u4f86\u8aaa\uff0c\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u7528\u6236\u8868\uff0c\u8a72\u8868\u53ef\u80fd\u5305\u542b\u7528\u6236\u7684ID\u3001\u59d3\u540d\u3001\u96fb\u5b50\u90f5\u4ef6\u548c\u8a3b\u518a\u65e5\u671f\u7b49\u4fe1\u606f\u3002<\/p>\n<h2 id=\"%e5%89%b5%e5%bb%ba%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-avsBBVrCYY\">\u5275\u5efa\u6578\u64da\u5eab\u8868\u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p>\u5728SQL\u4e2d\uff0c\u5275\u5efa\u6578\u64da\u5eab\u8868\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>CREATE TABLE \u8868\u540d (\n    \u5217\u540d1 \u6578\u64da\u985e\u578b1,\n    \u5217\u540d2 \u6578\u64da\u985e\u578b2,\n    ...\n);<\/code><\/pre>\n<p>\u9019\u88e1\u7684\u201c\u8868\u540d\u201d\u662f\u4f60\u8981\u5275\u5efa\u7684\u8868\u7684\u540d\u7a31\uff0c\u800c\u201c\u5217\u540d\u201d\u548c\u201c\u6578\u64da\u985e\u578b\u201d\u5247\u5b9a\u7fa9\u4e86\u8868\u4e2d\u6bcf\u4e00\u5217\u7684\u540d\u7a31\u548c\u6578\u64da\u985e\u578b\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e7%9a%84%e9%81%b8%e6%93%87-avsBBVrCYY\">\u6578\u64da\u985e\u578b\u7684\u9078\u64c7<\/h2>\n<p>\u5728\u5275\u5efa\u8868\u6642\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u5e38\u898b\u7684\u6578\u64da\u985e\u578b\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>INT<\/strong>\uff1a\u6574\u6578\u985e\u578b\uff0c\u901a\u5e38\u7528\u65bc\u5b58\u5132\u6578\u5b57\u3002<\/li>\n<li><strong>VARCHAR(n)<\/strong>\uff1a\u53ef\u8b8a\u9577\u5ea6\u5b57\u7b26\u4e32\uff0c\u9069\u5408\u5b58\u5132\u6587\u672c\u6578\u64da\u3002<\/li>\n<li><strong>DATE<\/strong>\uff1a\u65e5\u671f\u985e\u578b\uff0c\u7528\u65bc\u5b58\u5132\u65e5\u671f\u3002<\/li>\n<li><strong>FLOAT<\/strong>\uff1a\u6d6e\u9ede\u6578\u985e\u578b\uff0c\u9069\u5408\u5b58\u5132\u5e36\u5c0f\u6578\u7684\u6578\u5b57\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%89%b5%e5%bb%ba%e4%b8%80%e5%80%8b%e7%a4%ba%e4%be%8b%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8-avsBBVrCYY\">\u5275\u5efa\u4e00\u500b\u793a\u4f8b\u6578\u64da\u5eab\u8868<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u5275\u5efa\u7528\u6236\u8868\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>CREATE TABLE Users (\n    UserID INT PRIMARY KEY AUTO_INCREMENT,\n    UserName VARCHAR(100) NOT NULL,\n    Email VARCHAR(100) NOT NULL UNIQUE,\n    RegistrationDate DATE DEFAULT CURRENT_DATE\n);<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u5275\u5efa\u4e86\u4e00\u500b\u540d\u70ba\u201cUsers\u201d\u7684\u8868\uff0c\u5305\u542b\u56db\u500b\u5217\uff1a<\/p>\n<ul>\n<li><strong>UserID<\/strong>\uff1a\u7528\u6236\u7684\u552f\u4e00\u6a19\u8b58\u7b26\uff0c\u8a2d\u7f6e\u70ba\u81ea\u52d5\u589e\u91cf\u3002<\/li>\n<li><strong>UserName<\/strong>\uff1a\u7528\u6236\u540d\uff0c\u4e0d\u80fd\u70ba\u7a7a\u3002<\/li>\n<li><strong>Email<\/strong>\uff1a\u7528\u6236\u7684\u96fb\u5b50\u90f5\u4ef6\u5730\u5740\uff0c\u5fc5\u9808\u552f\u4e00\u4e14\u4e0d\u80fd\u70ba\u7a7a\u3002<\/li>\n<li><strong>RegistrationDate<\/strong>\uff1a\u7528\u6236\u8a3b\u518a\u65e5\u671f\uff0c\u9ed8\u8a8d\u70ba\u7576\u524d\u65e5\u671f\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%aa%a2%e6%9f%a5%e8%a1%a8%e7%9a%84%e5%89%b5%e5%bb%ba%e7%b5%90%e6%9e%9c-avsBBVrCYY\">\u6aa2\u67e5\u8868\u7684\u5275\u5efa\u7d50\u679c<\/h2>\n<p>\u5275\u5efa\u8868\u5f8c\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u8a9e\u53e5\u6aa2\u67e5\u8868\u7684\u7d50\u69cb\uff1a<\/p>\n<pre><code>DESCRIBE Users;<\/code><\/pre>\n<p>\u9019\u5c07\u986f\u793a\u201cUsers\u201d\u8868\u7684\u6240\u6709\u5217\u53ca\u5176\u6578\u64da\u985e\u578b\u548c\u7d04\u675f\u689d\u4ef6\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-avsBBVrCYY\">\u7d50\u8ad6<\/h2>\n<p>\u638c\u63e1SQL\u6578\u64da\u5eab\u8868\u7684\u5275\u5efa\u662f\u6578\u64da\u5eab\u7ba1\u7406\u7684\u57fa\u790e\u3002\u901a\u904e\u7406\u89e3\u57fa\u672c\u8a9e\u6cd5\u3001\u6578\u64da\u985e\u578b\u7684\u9078\u64c7\u4ee5\u53ca\u5982\u4f55\u5275\u5efa\u548c\u6aa2\u67e5\u8868\uff0c\u60a8\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u548c\u64cd\u4f5c\u6578\u64da\u3002\u96a8\u8457\u5c0dSQL\u7684\u6df1\u5165\u5b78\u7fd2\uff0c\u60a8\u5c07\u80fd\u5920\u57f7\u884c\u66f4\u8907\u96dc\u7684\u67e5\u8a62\u548c\u6578\u64da\u64cd\u4f5c\uff0c\u9032\u4e00\u6b65\u63d0\u5347\u60a8\u7684\u6578\u64da\u7ba1\u7406\u80fd\u529b\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216<a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\u4f86\u652f\u6301\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\u548c\u6578\u64da\u5b58\u5132\u9700\u6c42\u3002\u7121\u8ad6\u662f\u5c0f\u578b\u9805\u76ee\u9084\u662f\u5927\u578b\u4f01\u696d\uff0c\u9078\u64c7\u5408\u9069\u7684\u670d\u52d9\u5668\u90fd\u80fd\u70ba\u60a8\u7684\u696d\u52d9\u589e\u6dfb\u52a9\u529b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5feb\u901f\u638c\u63e1SQL\u6578\u64da\u5eab\u8868\u7684\u5275\u5efa\uff0c\u5b78\u7fd2\u5982\u4f55\u6709\u6548\u8a2d\u8a08\u548c\u5efa\u7acb\u6578\u64da\u5eab\u8868\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u80fd\u529b\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-166681","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/166681","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=166681"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/166681\/revisions"}],"predecessor-version":[{"id":166682,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/166681\/revisions\/166682"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=166681"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=166681"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=166681"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}