{"id":187758,"date":"2024-11-11T16:56:29","date_gmt":"2024-11-11T08:56:29","guid":{"rendered":"https:\/\/server.hk\/cnblog\/187758\/"},"modified":"2024-11-11T16:56:31","modified_gmt":"2024-11-11T08:56:31","slug":"%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e7%9a%84%e6%95%b8%e5%80%bc%e9%a1%9e%e5%9e%8b%ef%bc%9a%e5%84%b2%e5%ad%98%e5%92%8c%e8%a1%a8%e7%a4%ba%e6%96%b9%e5%bc%8f-%e6%95%b8%e6%93%9a%e5%ba%ab%e6%95%b8%e5%80%bc","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/187758\/","title":{"rendered":"\u6578\u64da\u5eab\u4e2d\u7684\u6578\u503c\u985e\u578b\uff1a\u5132\u5b58\u548c\u8868\u793a\u65b9\u5f0f (\u6578\u64da\u5eab\u6578\u503c\u578b\u8868\u793a\u65b9\u6cd5)"},"content":{"rendered":"<h1 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e7%9a%84%e6%95%b8%e5%80%bc%e9%a1%9e%e5%9e%8b%ef%bc%9a%e5%84%b2%e5%ad%98%e5%92%8c%e8%a1%a8%e7%a4%ba%e6%96%b9%e5%bc%8f-%e6%95%b8%e6%93%9a%e5%ba%ab%e6%95%b8%e5%80%bc-CaXEXCCHjP\">\u6578\u64da\u5eab\u4e2d\u7684\u6578\u503c\u985e\u578b\uff1a\u5132\u5b58\u548c\u8868\u793a\u65b9\u5f0f (\u6578\u64da\u5eab\u6578\u503c\u578b\u8868\u793a\u65b9\u6cd5)<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\uff0c\u6578\u503c\u985e\u578b\u662f\u975e\u5e38\u91cd\u8981\u7684\u4e00\u500b\u65b9\u9762\u3002\u6578\u503c\u985e\u578b\u4e0d\u50c5\u5f71\u97ff\u6578\u64da\u7684\u5132\u5b58\u6548\u7387\uff0c\u9084\u5f71\u97ff\u6578\u64da\u7684\u8a08\u7b97\u548c\u67e5\u8a62\u6027\u80fd\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u6578\u64da\u5eab\u4e2d\u5e38\u898b\u7684\u6578\u503c\u985e\u578b\u53ca\u5176\u5132\u5b58\u548c\u8868\u793a\u65b9\u5f0f\uff0c\u5e6b\u52a9\u8b80\u8005\u66f4\u597d\u5730\u7406\u89e3\u5982\u4f55\u9078\u64c7\u5408\u9069\u7684\u6578\u503c\u985e\u578b\u4ee5\u6eff\u8db3\u7279\u5b9a\u9700\u6c42\u3002<\/p>\n<h2 id=\"%e6%95%b8%e5%80%bc%e9%a1%9e%e5%9e%8b%e7%9a%84%e5%88%86%e9%a1%9e-CaXEXCCHjP\">\u6578\u503c\u985e\u578b\u7684\u5206\u985e<\/h2>\n<p>\u6578\u64da\u5eab\u4e2d\u7684\u6578\u503c\u985e\u578b\u901a\u5e38\u53ef\u4ee5\u5206\u70ba\u6574\u6578\u985e\u578b\u548c\u6d6e\u9ede\u6578\u985e\u578b\u5169\u5927\u985e\u3002\u9019\u5169\u985e\u578b\u5404\u81ea\u6709\u4e0d\u540c\u7684\u7279\u6027\u548c\u7528\u9014\u3002<\/p>\n<h3 id=\"%e6%95%b4%e6%95%b8%e9%a1%9e%e5%9e%8b-CaXEXCCHjP\">\u6574\u6578\u985e\u578b<\/h3>\n<p>\u6574\u6578\u985e\u578b\u7528\u65bc\u5132\u5b58\u6c92\u6709\u5c0f\u6578\u90e8\u5206\u7684\u6578\u5b57\u3002\u6839\u64da\u6240\u9700\u7684\u5132\u5b58\u7a7a\u9593\u548c\u6578\u5b57\u7bc4\u570d\uff0c\u6574\u6578\u985e\u578b\u53ef\u4ee5\u9032\u4e00\u6b65\u7d30\u5206\u70ba\u4ee5\u4e0b\u5e7e\u7a2e\uff1a<\/p>\n<ul>\n<li><strong>TINYINT<\/strong>\uff1a\u901a\u5e38\u4f54\u75281\u500b\u5b57\u7bc0\uff0c\u7bc4\u570d\u5f9e-128\u5230127\uff08\u6709\u7b26\u865f\uff09\u62160\u5230255\uff08\u7121\u7b26\u865f\uff09\u3002<\/li>\n<li><strong>SMALLINT<\/strong>\uff1a\u4f54\u75282\u500b\u5b57\u7bc0\uff0c\u7bc4\u570d\u5f9e-32,768\u523032,767\uff08\u6709\u7b26\u865f\uff09\u62160\u523065,535\uff08\u7121\u7b26\u865f\uff09\u3002<\/li>\n<li><strong>MEDIUMINT<\/strong>\uff1a\u4f54\u75283\u500b\u5b57\u7bc0\uff0c\u7bc4\u570d\u5f9e-8,388,608\u52308,388,607\uff08\u6709\u7b26\u865f\uff09\u62160\u523016,777,215\uff08\u7121\u7b26\u865f\uff09\u3002<\/li>\n<li><strong>INT<\/strong>\uff1a\u4f54\u75284\u500b\u5b57\u7bc0\uff0c\u7bc4\u570d\u5f9e-2,147,483,648\u52302,147,483,647\uff08\u6709\u7b26\u865f\uff09\u62160\u52304,294,967,295\uff08\u7121\u7b26\u865f\uff09\u3002<\/li>\n<li><strong>BIGINT<\/strong>\uff1a\u4f54\u75288\u500b\u5b57\u7bc0\uff0c\u7bc4\u570d\u5f9e-9,223,372,036,854,775,808\u52309,223,372,036,854,775,807\uff08\u6709\u7b26\u865f\uff09\u62160\u523018,446,744,073,709,551,615\uff08\u7121\u7b26\u865f\uff09\u3002<\/li>\n<\/ul>\n<h3 id=\"%e6%b5%ae%e9%bb%9e%e6%95%b8%e9%a1%9e%e5%9e%8b-CaXEXCCHjP\">\u6d6e\u9ede\u6578\u985e\u578b<\/h3>\n<p>\u6d6e\u9ede\u6578\u985e\u578b\u7528\u65bc\u5132\u5b58\u5e36\u6709\u5c0f\u6578\u90e8\u5206\u7684\u6578\u5b57\u3002\u9019\u985e\u578b\u901a\u5e38\u7528\u65bc\u9700\u8981\u9ad8\u7cbe\u5ea6\u8a08\u7b97\u7684\u60c5\u6cc1\u3002\u6d6e\u9ede\u6578\u985e\u578b\u4e3b\u8981\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>FLOAT<\/strong>\uff1a\u4f54\u75284\u500b\u5b57\u7bc0\uff0c\u901a\u5e38\u7528\u65bc\u5132\u5b58\u5c0f\u6578\uff0c\u7cbe\u5ea6\u7d04\u70ba7\u4f4d\u5341\u9032\u5236\u6578\u3002<\/li>\n<li><strong>DOUBLE<\/strong>\uff1a\u4f54\u75288\u500b\u5b57\u7bc0\uff0c\u7cbe\u5ea6\u7d04\u70ba15\u4f4d\u5341\u9032\u5236\u6578\uff0c\u9069\u5408\u9700\u8981\u66f4\u9ad8\u7cbe\u5ea6\u7684\u8a08\u7b97\u3002<\/li>\n<li><strong>DECIMAL<\/strong>\uff1a\u9019\u662f\u4e00\u7a2e\u7cbe\u78ba\u7684\u6578\u503c\u985e\u578b\uff0c\u901a\u5e38\u7528\u65bc\u91d1\u878d\u8a08\u7b97\u3002\u7528\u6236\u53ef\u4ee5\u6307\u5b9a\u7e3d\u4f4d\u6578\u548c\u5c0f\u6578\u4f4d\u6578\uff0c\u4f8b\u5982DECIMAL(10,2)\u8868\u793a\u7e3d\u517110\u4f4d\u6578\uff0c\u5176\u4e2d2\u4f4d\u70ba\u5c0f\u6578\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%95%b8%e5%80%bc%e9%a1%9e%e5%9e%8b%e7%9a%84%e9%81%b8%e6%93%87-CaXEXCCHjP\">\u6578\u503c\u985e\u578b\u7684\u9078\u64c7<\/h2>\n<p>\u9078\u64c7\u5408\u9069\u7684\u6578\u503c\u985e\u578b\u5c0d\u65bc\u6578\u64da\u5eab\u7684\u6027\u80fd\u81f3\u95dc\u91cd\u8981\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u9078\u64c7\u6578\u503c\u985e\u578b\u6642\u9700\u8981\u8003\u616e\u7684\u56e0\u7d20\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u7bc4\u570d<\/strong>\uff1a\u6839\u64da\u5be6\u969b\u9700\u8981\u5132\u5b58\u7684\u6578\u64da\u7bc4\u570d\u9078\u64c7\u5408\u9069\u7684\u6574\u6578\u6216\u6d6e\u9ede\u6578\u985e\u578b\u3002<\/li>\n<li><strong>\u5132\u5b58\u7a7a\u9593<\/strong>\uff1a\u4e0d\u540c\u7684\u6578\u503c\u985e\u578b\u4f54\u7528\u4e0d\u540c\u7684\u5132\u5b58\u7a7a\u9593\uff0c\u9078\u64c7\u5408\u9069\u7684\u985e\u578b\u53ef\u4ee5\u7bc0\u7701\u5132\u5b58\u8cc7\u6e90\u3002<\/li>\n<li><strong>\u8a08\u7b97\u7cbe\u5ea6<\/strong>\uff1a\u5c0d\u65bc\u9700\u8981\u9ad8\u7cbe\u5ea6\u7684\u8a08\u7b97\uff0c\u61c9\u9078\u64c7DECIMAL\u6216DOUBLE\u985e\u578b\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%a4%ba%e4%be%8b%e4%bb%a3%e7%a2%bc-CaXEXCCHjP\">\u793a\u4f8b\u4ee3\u78bc<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684SQL\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u5728\u6578\u64da\u5eab\u4e2d\u5275\u5efa\u4e00\u500b\u5305\u542b\u4e0d\u540c\u6578\u503c\u985e\u578b\u7684\u8868\uff1a<\/p>\n<pre><code>\nCREATE TABLE products (\n    id INT AUTO_INCREMENT PRIMARY KEY,\n    name VARCHAR(100),\n    price DECIMAL(10, 2),\n    quantity INT,\n    rating FLOAT\n);\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c<code>price<\/code>\u4f7f\u7528\u4e86DECIMAL\u985e\u578b\u4ee5\u78ba\u4fdd\u50f9\u683c\u7684\u7cbe\u78ba\u6027\uff0c<code>quantity<\/code>\u4f7f\u7528\u4e86\u6574\u6578\u985e\u578b\u4f86\u8868\u793a\u7522\u54c1\u7684\u6578\u91cf\uff0c\u800c<code>rating<\/code>\u5247\u4f7f\u7528\u4e86FLOAT\u985e\u578b\u4f86\u8868\u793a\u7522\u54c1\u7684\u8a55\u5206\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-CaXEXCCHjP\">\u7e3d\u7d50<\/h2>\n<p>\u5728\u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u503c\u985e\u578b\u5c0d\u65bc\u6578\u64da\u7684\u5132\u5b58\u548c\u8a08\u7b97\u81f3\u95dc\u91cd\u8981\u3002\u6574\u6578\u985e\u578b\u548c\u6d6e\u9ede\u6578\u985e\u578b\u5404\u6709\u5176\u7279\u9ede\u548c\u9069\u7528\u5834\u666f\uff0c\u958b\u767c\u8005\u61c9\u6839\u64da\u5be6\u969b\u9700\u6c42\u9032\u884c\u9078\u64c7\u3002\u4e86\u89e3\u9019\u4e9b\u6578\u503c\u985e\u578b\u7684\u5132\u5b58\u548c\u8868\u793a\u65b9\u5f0f\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u6709\u6548\u5730\u8a2d\u8a08\u6578\u64da\u5eab\u7d50\u69cb\uff0c\u63d0\u5347\u7cfb\u7d71\u6027\u80fd\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u95dc\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u548c\u5176\u4ed6\u4f3a\u670d\u5668\u89e3\u6c7a\u65b9\u6848\u7684\u4fe1\u606f\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u6578\u64da\u5eab\u4e2d\u7684\u6578\u503c\u985e\u578b\u53ca\u5176\u5132\u5b58\u548c\u8868\u793a\u65b9\u5f0f\uff0c\u4e86\u89e3\u5982\u4f55\u6709\u6548\u7ba1\u7406\u548c\u4f7f\u7528\u6578\u64da\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-187758","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187758","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=187758"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187758\/revisions"}],"predecessor-version":[{"id":187759,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187758\/revisions\/187759"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=187758"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=187758"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=187758"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}