{"id":179702,"date":"2024-11-09T04:05:17","date_gmt":"2024-11-08T20:05:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/179702\/"},"modified":"2024-11-09T04:05:18","modified_gmt":"2024-11-08T20:05:18","slug":"%e5%a6%82%e4%bd%95%e5%9c%a8-sql-%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e5%89%b5%e5%bb%ba%e8%a1%a8%ef%bc%9f-sql-%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e5%89%b5%e5%bb%ba%e8%a1%a8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/179702\/","title":{"rendered":"\u5982\u4f55\u5728 SQL \u6578\u64da\u5eab\u4e2d\u5275\u5efa\u8868\uff1f (sql \u6578\u64da\u5eab\u4e2d\u5275\u5efa\u8868)"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e5%9c%a8-sql-%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e5%89%b5%e5%bb%ba%e8%a1%a8%ef%bc%9f-UwglSHdwJG\">\u5982\u4f55\u5728 SQL \u6578\u64da\u5eab\u4e2d\u5275\u5efa\u8868\uff1f<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u8868\u662f\u7528\u4f86\u5b58\u5132\u6578\u64da\u7684\u57fa\u672c\u7d50\u69cb\u3002\u7121\u8ad6\u662f\u95dc\u806f\u578b\u6578\u64da\u5eab\u9084\u662f\u5176\u4ed6\u985e\u578b\u7684\u6578\u64da\u5eab\uff0c\u5275\u5efa\u8868\u90fd\u662f\u4e00\u500b\u91cd\u8981\u7684\u6b65\u9a5f\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u5728 SQL \u6578\u64da\u5eab\u4e2d\u5275\u5efa\u8868\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u6ce8\u610f\u4e8b\u9805\u3002<\/p>\n<h2 id=\"sql-%e8%a1%a8%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-UwglSHdwJG\">SQL \u8868\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u5728 SQL \u4e2d\uff0c\u8868\u7531\u884c\u548c\u5217\u7d44\u6210\u3002\u6bcf\u4e00\u884c\u4ee3\u8868\u4e00\u689d\u8a18\u9304\uff0c\u800c\u6bcf\u4e00\u5217\u5247\u4ee3\u8868\u8a18\u9304\u4e2d\u7684\u4e00\u500b\u5c6c\u6027\u3002\u8868\u7684\u7d50\u69cb\u7531\u5176\u5217\u7684\u6578\u91cf\u548c\u985e\u578b\u6c7a\u5b9a\u3002\u5275\u5efa\u8868\u7684\u8a9e\u6cd5\u901a\u5e38\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<h2 id=\"%e5%89%b5%e5%bb%ba%e8%a1%a8%e7%9a%84%e6%ad%a5%e9%a9%9f-UwglSHdwJG\">\u5275\u5efa\u8868\u7684\u6b65\u9a5f<\/h2>\n<h3 id=\"1-%e7%a2%ba%e5%ae%9a%e8%a1%a8%e7%9a%84%e5%90%8d%e7%a8%b1%e5%92%8c%e7%b5%90%e6%a7%8b-UwglSHdwJG\">1. \u78ba\u5b9a\u8868\u7684\u540d\u7a31\u548c\u7d50\u69cb<\/h3>\n<p>\u5728\u5275\u5efa\u8868\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u78ba\u5b9a\u8868\u7684\u540d\u7a31\u4ee5\u53ca\u5b83\u6240\u9700\u7684\u5217\u548c\u6578\u64da\u985e\u578b\u3002\u4f8b\u5982\uff0c\u5982\u679c\u6211\u5011\u8981\u5275\u5efa\u4e00\u500b\u7528\u65bc\u5b58\u5132\u7528\u6236\u4fe1\u606f\u7684\u8868\uff0c\u6211\u5011\u53ef\u80fd\u9700\u8981\u4ee5\u4e0b\u5217\uff1a<\/p>\n<ul>\n<li>\u7528\u6236ID (\u6574\u6578\u578b)<\/li>\n<li>\u7528\u6236\u540d (\u5b57\u7b26\u4e32\u578b)<\/li>\n<li>\u96fb\u5b50\u90f5\u4ef6 (\u5b57\u7b26\u4e32\u578b)<\/li>\n<li>\u8a3b\u518a\u65e5\u671f (\u65e5\u671f\u578b)<\/li>\n<\/ul>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8-create-table-%e8%aa%9e%e5%8f%a5-UwglSHdwJG\">2. \u4f7f\u7528 CREATE TABLE \u8a9e\u53e5<\/h3>\n<p>\u78ba\u5b9a\u4e86\u8868\u7684\u7d50\u69cb\u5f8c\uff0c\u53ef\u4ee5\u4f7f\u7528 SQL \u7684 CREATE TABLE \u8a9e\u53e5\u4f86\u5275\u5efa\u8868\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff1a<\/p>\n<pre><code>CREATE TABLE Users (\n    UserID INT PRIMARY KEY,\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\uff1a<\/p>\n<ul>\n<li><code>UserID<\/code> \u662f\u4e3b\u9375\uff0c\u78ba\u4fdd\u6bcf\u500b\u7528\u6236\u7684\u552f\u4e00\u6027\u3002<\/li>\n<li><code>UserName<\/code> \u548c <code>Email<\/code> \u662f\u5fc5\u586b\u5b57\u6bb5\u3002<\/li>\n<li><code>Email<\/code> \u5b57\u6bb5\u8a2d\u7f6e\u70ba\u552f\u4e00\uff0c\u907f\u514d\u91cd\u8907\u7684\u96fb\u5b50\u90f5\u4ef6\u5730\u5740\u3002<\/li>\n<li><code>RegistrationDate<\/code> \u5b57\u6bb5\u9ed8\u8a8d\u70ba\u7576\u524d\u65e5\u671f\u3002<\/li>\n<\/ul>\n<h3 id=\"3-%e6%aa%a2%e6%9f%a5%e8%a1%a8%e7%9a%84%e5%89%b5%e5%bb%ba-UwglSHdwJG\">3. \u6aa2\u67e5\u8868\u7684\u5275\u5efa<\/h3>\n<p>\u5275\u5efa\u8868\u5f8c\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u8a9e\u53e5\u4f86\u6aa2\u67e5\u8868\u7684\u7d50\u69cb\uff1a<\/p>\n<pre><code>DESCRIBE Users;<\/code><\/pre>\n<p>\u9019\u5c07\u986f\u793a\u8868\u4e2d\u6240\u6709\u5217\u7684\u540d\u7a31\u3001\u6578\u64da\u985e\u578b\u53ca\u5176\u4ed6\u5c6c\u6027\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-UwglSHdwJG\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li>\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\uff1a\u6839\u64da\u5be6\u969b\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\uff0c\u4ee5\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u5b58\u5132\u6548\u7387\u3002<\/li>\n<li>\u8a2d\u7f6e\u4e3b\u9375\u548c\u7d22\u5f15\uff1a\u4e3b\u9375\u80fd\u5920\u552f\u4e00\u6a19\u8b58\u6bcf\u4e00\u689d\u8a18\u9304\uff0c\u7d22\u5f15\u5247\u80fd\u52a0\u5feb\u67e5\u8a62\u901f\u5ea6\u3002<\/li>\n<li>\u8003\u616e\u6578\u64da\u5b8c\u6574\u6027\uff1a\u4f7f\u7528\u7d04\u675f\uff08\u5982 NOT NULL\u3001UNIQUE\u3001FOREIGN KEY \u7b49\uff09\u4f86\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\u548c\u4e00\u81f4\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-UwglSHdwJG\">\u7e3d\u7d50<\/h2>\n<p>\u5728 SQL \u6578\u64da\u5eab\u4e2d\u5275\u5efa\u8868\u662f\u4e00\u500b\u57fa\u672c\u800c\u91cd\u8981\u7684\u64cd\u4f5c\uff0c\u6b63\u78ba\u7684\u8868\u7d50\u69cb\u8a2d\u8a08\u80fd\u5920\u63d0\u9ad8\u6578\u64da\u7684\u7ba1\u7406\u6548\u7387\u548c\u67e5\u8a62\u6027\u80fd\u3002\u901a\u904e\u672c\u6587\u7684\u4ecb\u7d39\uff0c\u76f8\u4fe1\u60a8\u5df2\u7d93\u638c\u63e1\u4e86\u5982\u4f55\u4f7f\u7528 SQL \u8a9e\u53e5\u5275\u5efa\u8868\u7684\u57fa\u672c\u65b9\u6cd5\u3002\u5982\u679c\u60a8\u9700\u8981\u66f4\u9ad8\u6548\u7684\u6578\u64da\u7ba1\u7406\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u4f86\u642d\u5efa\u60a8\u7684\u6578\u64da\u5eab\u74b0\u5883\uff0c\u4eab\u53d7\u66f4\u7a69\u5b9a\u7684\u6027\u80fd\u548c\u66f4\u9ad8\u7684\u5b89\u5168\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5728 SQL \u6578\u64da\u5eab\u4e2d\u5275\u5efa\u8868\uff0c\u5305\u62ec\u8a9e\u6cd5\u3001\u6b65\u9a5f\u548c\u6700\u4f73\u5be6\u8e10\uff0c\u8f15\u9b06\u7ba1\u7406\u6578\u64da\u7d50\u69cb\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-179702","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179702","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=179702"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179702\/revisions"}],"predecessor-version":[{"id":179703,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179702\/revisions\/179703"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=179702"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=179702"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=179702"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}