{"id":175493,"date":"2024-11-08T06:20:17","date_gmt":"2024-11-07T22:20:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/175493\/"},"modified":"2024-11-08T06:20:18","modified_gmt":"2024-11-07T22:20:18","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8%e6%95%b8%e6%93%9a%e5%ba%ab%e5%89%b5%e8%a1%a8%e8%aa%9e%e5%8f%a5%e5%ae%9a%e7%be%a9%e6%95%b8%e5%80%bc%e5%9e%8b%e5%ad%97%e6%ae%b5%ef%bc%9f-%e6%95%b8%e6%93%9a%e5%ba%ab","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/175493\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528\u6578\u64da\u5eab\u5275\u8868\u8a9e\u53e5\u5b9a\u7fa9\u6578\u503c\u578b\u5b57\u6bb5\uff1f (\u6578\u64da\u5eab\u5275\u8868\u8a9e\u53e5\u6578\u503c\u578b\u5b9a\u7fa9)"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8%e6%95%b8%e6%93%9a%e5%ba%ab%e5%89%b5%e8%a1%a8%e8%aa%9e%e5%8f%a5%e5%ae%9a%e7%be%a9%e6%95%b8%e5%80%bc%e5%9e%8b%e5%ad%97%e6%ae%b5%ef%bc%9f-UqwiMDAajm\">\u5982\u4f55\u4f7f\u7528\u6578\u64da\u5eab\u5275\u8868\u8a9e\u53e5\u5b9a\u7fa9\u6578\u503c\u578b\u5b57\u6bb5\uff1f<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\uff0c\u5275\u5efa\u8868\u683c\u662f\u57fa\u672c\u7684\u6b65\u9a5f\u4e4b\u4e00\uff0c\u800c\u5728\u5275\u5efa\u8868\u683c\u6642\uff0c\u5b9a\u7fa9\u6578\u503c\u578b\u5b57\u6bb5\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u6578\u503c\u578b\u5b57\u6bb5\u7528\u65bc\u5b58\u5132\u5404\u7a2e\u6578\u5b57\u6578\u64da\uff0c\u5982\u6574\u6578\u3001\u6d6e\u9ede\u6578\u7b49\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528\u6578\u64da\u5eab\u5275\u8868\u8a9e\u53e5\u4f86\u5b9a\u7fa9\u9019\u4e9b\u6578\u503c\u578b\u5b57\u6bb5\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"%e6%95%b8%e5%80%bc%e5%9e%8b%e5%ad%97%e6%ae%b5%e7%9a%84%e9%a1%9e%e5%9e%8b-UqwiMDAajm\">\u6578\u503c\u578b\u5b57\u6bb5\u7684\u985e\u578b<\/h2>\n<p>\u5728\u5927\u591a\u6578\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u4e2d\uff0c\u6578\u503c\u578b\u5b57\u6bb5\u4e3b\u8981\u5305\u62ec\u4ee5\u4e0b\u5e7e\u7a2e\u985e\u578b\uff1a<\/p>\n<ul>\n<li><strong>\u6574\u6578\u578b\uff08INTEGER\uff09<\/strong>\uff1a\u7528\u65bc\u5b58\u5132\u6574\u6578\u503c\uff0c\u901a\u5e38\u7528\u65bc\u8a08\u6578\u6216\u7d22\u5f15\u3002<\/li>\n<li><strong>\u6d6e\u9ede\u578b\uff08FLOAT, DOUBLE\uff09<\/strong>\uff1a\u7528\u65bc\u5b58\u5132\u5e36\u5c0f\u6578\u7684\u6578\u5b57\uff0c\u9069\u5408\u9700\u8981\u7cbe\u78ba\u8a08\u7b97\u7684\u60c5\u6cc1\u3002<\/li>\n<li><strong>\u5341\u9032\u5236\u578b\uff08DECIMAL\uff09<\/strong>\uff1a\u7528\u65bc\u5b58\u5132\u7cbe\u78ba\u7684\u6578\u5b57\uff0c\u7279\u5225\u662f\u5728\u91d1\u878d\u8a08\u7b97\u4e2d\u975e\u5e38\u91cd\u8981\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%89%b5%e5%bb%ba%e8%a1%a8%e6%a0%bc%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-UqwiMDAajm\">\u5275\u5efa\u8868\u683c\u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p>\u5728 SQL \u4e2d\uff0c\u5275\u5efa\u8868\u683c\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>\u5728\u9019\u88e1\uff0c\u6578\u64da\u985e\u578b\u53ef\u4ee5\u662f\u6574\u6578\u578b\u3001\u6d6e\u9ede\u578b\u6216\u5341\u9032\u5236\u578b\u7b49\u3002\u63a5\u4e0b\u4f86\uff0c\u6211\u5011\u5c07\u901a\u904e\u5177\u9ad4\u7684\u793a\u4f8b\u4f86\u8aaa\u660e\u5982\u4f55\u5b9a\u7fa9\u6578\u503c\u578b\u5b57\u6bb5\u3002<\/p>\n<h2 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a%e5%89%b5%e5%bb%ba%e4%b8%80%e5%80%8b%e5%8c%85%e5%90%ab%e6%95%b8%e5%80%bc%e5%9e%8b%e5%ad%97%e6%ae%b5%e7%9a%84%e8%a1%a8%e6%a0%bc-UqwiMDAajm\">\u793a\u4f8b\uff1a\u5275\u5efa\u4e00\u500b\u5305\u542b\u6578\u503c\u578b\u5b57\u6bb5\u7684\u8868\u683c<\/h2>\n<p>\u5047\u8a2d\u6211\u5011\u8981\u5275\u5efa\u4e00\u500b\u540d\u70ba <code>products<\/code> \u7684\u8868\u683c\uff0c\u7528\u65bc\u5b58\u5132\u7522\u54c1\u4fe1\u606f\uff0c\u5305\u62ec\u7522\u54c1ID\u3001\u540d\u7a31\u3001\u50f9\u683c\u548c\u5eab\u5b58\u6578\u91cf\u3002\u4ee5\u4e0b\u662f\u5275\u5efa\u8a72\u8868\u683c\u7684 SQL \u8a9e\u53e5\uff1a<\/p>\n<pre><code>CREATE TABLE products (\n    product_id INT PRIMARY KEY,\n    product_name VARCHAR(100),\n    price DECIMAL(10, 2),\n    stock INT\n);<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff1a<\/p>\n<ul>\n<li><code>product_id<\/code> \u662f\u6574\u6578\u578b\u5b57\u6bb5\uff0c\u4f5c\u70ba\u4e3b\u9375\u3002<\/li>\n<li><code>product_name<\/code> \u662f\u8b8a\u9577\u5b57\u7b26\u4e32\u578b\u5b57\u6bb5\uff0c\u7528\u65bc\u5b58\u5132\u7522\u54c1\u540d\u7a31\u3002<\/li>\n<li><code>price<\/code> \u662f\u5341\u9032\u5236\u578b\u5b57\u6bb5\uff0c\u5b9a\u7fa9\u70ba\u6700\u591a10\u4f4d\u6578\u5b57\uff0c\u5176\u4e2d2\u4f4d\u70ba\u5c0f\u6578\uff0c\u9069\u5408\u5b58\u5132\u50f9\u683c\u3002<\/li>\n<li><code>stock<\/code> \u662f\u6574\u6578\u578b\u5b57\u6bb5\uff0c\u7528\u65bc\u8868\u793a\u5eab\u5b58\u6578\u91cf\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%95%b8%e5%80%bc%e5%9e%8b%e5%ad%97%e6%ae%b5%e7%9a%84%e7%b4%84%e6%9d%9f%e6%a2%9d%e4%bb%b6-UqwiMDAajm\">\u6578\u503c\u578b\u5b57\u6bb5\u7684\u7d04\u675f\u689d\u4ef6<\/h2>\n<p>\u5728\u5b9a\u7fa9\u6578\u503c\u578b\u5b57\u6bb5\u6642\uff0c\u53ef\u4ee5\u6dfb\u52a0\u4e00\u4e9b\u7d04\u675f\u689d\u4ef6\u4f86\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\u548c\u6709\u6548\u6027\u3002\u5e38\u898b\u7684\u7d04\u675f\u689d\u4ef6\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>NOT NULL<\/strong>\uff1a\u78ba\u4fdd\u8a72\u5b57\u6bb5\u4e0d\u80fd\u70ba\u7a7a\u3002<\/li>\n<li><strong>UNIQUE<\/strong>\uff1a\u78ba\u4fdd\u8a72\u5b57\u6bb5\u7684\u503c\u662f\u552f\u4e00\u7684\u3002<\/li>\n<li><strong>CHECK<\/strong>\uff1a\u78ba\u4fdd\u8a72\u5b57\u6bb5\u7684\u503c\u7b26\u5408\u7279\u5b9a\u689d\u4ef6\u3002<\/li>\n<\/ul>\n<p>\u4f8b\u5982\uff0c\u5982\u679c\u6211\u5011\u5e0c\u671b <code>price<\/code> \u5b57\u6bb5\u4e0d\u80fd\u70ba\u8ca0\u6578\uff0c\u53ef\u4ee5\u9019\u6a23\u5b9a\u7fa9\uff1a<\/p>\n<pre><code>CREATE TABLE products (\n    product_id INT PRIMARY KEY,\n    product_name VARCHAR(100),\n    price DECIMAL(10, 2) CHECK (price &gt;= 0),\n    stock INT NOT NULL\n);<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-UqwiMDAajm\">\u7e3d\u7d50<\/h2>\n<p>\u5728\u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\uff0c\u6b63\u78ba\u5730\u5b9a\u7fa9\u6578\u503c\u578b\u5b57\u6bb5\u662f\u78ba\u4fdd\u6578\u64da\u5b8c\u6574\u6027\u548c\u6e96\u78ba\u6027\u7684\u95dc\u9375\u3002\u901a\u904e\u4f7f\u7528\u9069\u7576\u7684\u6578\u64da\u985e\u578b\u548c\u7d04\u675f\u689d\u4ef6\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u548c\u5b58\u5132\u6578\u64da\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u65b9\u6848\u4e5f\u662f\u975e\u5e38\u91cd\u8981\u7684\uff0c\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002\u4e86\u89e3\u5982\u4f55\u4f7f\u7528\u6578\u64da\u5eab\u5275\u8868\u8a9e\u53e5\u5b9a\u7fa9\u6578\u503c\u578b\u5b57\u6bb5\uff0c\u5c07\u6709\u52a9\u65bc\u958b\u767c\u8005\u5728\u8a2d\u8a08\u6578\u64da\u5eab\u6642\u505a\u51fa\u66f4\u660e\u667a\u7684\u6c7a\u7b56\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u5728\u6578\u64da\u5eab\u5275\u8868\u8a9e\u53e5\u4e2d\u5b9a\u7fa9\u6578\u503c\u578b\u5b57\u6bb5\uff0c\u5305\u62ec\u6574\u6578\u3001\u6d6e\u9ede\u6578\u548c\u5176\u4ed6\u6578\u64da\u985e\u578b\u7684\u4f7f\u7528\u65b9\u6cd5\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-175493","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/175493","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=175493"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/175493\/revisions"}],"predecessor-version":[{"id":175494,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/175493\/revisions\/175494"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=175493"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=175493"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=175493"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}