{"id":60899,"date":"2024-10-13T06:45:16","date_gmt":"2024-10-12T22:45:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/60899\/"},"modified":"2024-10-13T06:45:16","modified_gmt":"2024-10-12T22:45:16","slug":"db2%e6%95%b8%e5%80%bc%e5%9e%8b%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e7%b0%a1%e4%bb%8b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/60899\/","title":{"rendered":"DB2\u6578\u503c\u578b\u6578\u64da\u985e\u578b\u7c21\u4ecb"},"content":{"rendered":"<h1 id=\"db2%e6%95%b8%e5%80%bc%e5%9e%8b%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e7%b0%a1%e4%bb%8b-WeirMMNTys\">DB2\u6578\u503c\u578b\u6578\u64da\u985e\u578b\u7c21\u4ecb<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u6578\u64da\u985e\u578b\u7684\u9078\u64c7\u5c0d\u65bc\u6578\u64da\u7684\u5b58\u5132\u548c\u8655\u7406\u81f3\u95dc\u91cd\u8981\u3002IBM\u7684DB2\u6578\u64da\u5eab\u7cfb\u7d71\u63d0\u4f9b\u4e86\u591a\u7a2e\u6578\u503c\u578b\u6578\u64da\u985e\u578b\uff0c\u4ee5\u6eff\u8db3\u4e0d\u540c\u61c9\u7528\u5834\u666f\u7684\u9700\u6c42\u3002\u672c\u6587\u5c07\u5c0dDB2\u4e2d\u7684\u6578\u503c\u578b\u6578\u64da\u985e\u578b\u9032\u884c\u7c21\u8981\u4ecb\u7d39\uff0c\u5e6b\u52a9\u8b80\u8005\u66f4\u597d\u5730\u7406\u89e3\u5176\u7279\u6027\u548c\u4f7f\u7528\u65b9\u6cd5\u3002<\/p>\n<h2 id=\"%e6%95%b8%e5%80%bc%e5%9e%8b%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e6%a6%82%e8%bf%b0-WeirMMNTys\">\u6578\u503c\u578b\u6578\u64da\u985e\u578b\u6982\u8ff0<\/h2>\n<p>DB2\u7684\u6578\u503c\u578b\u6578\u64da\u985e\u578b\u4e3b\u8981\u5206\u70ba\u6574\u6578\u578b\u548c\u6d6e\u9ede\u578b\u5169\u5927\u985e\u3002\u9019\u4e9b\u6578\u64da\u985e\u578b\u7684\u9078\u64c7\u53d6\u6c7a\u65bc\u6240\u9700\u7684\u7cbe\u5ea6\u548c\u7bc4\u570d\u3002<\/p>\n<h3 id=\"%e6%95%b4%e6%95%b8%e5%9e%8b%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b-WeirMMNTys\">\u6574\u6578\u578b\u6578\u64da\u985e\u578b<\/h3>\n<p>\u6574\u6578\u578b\u6578\u64da\u985e\u578b\u7528\u65bc\u5b58\u5132\u4e0d\u5e36\u5c0f\u6578\u7684\u6574\u6578\u503c\u3002DB2\u652f\u6301\u4ee5\u4e0b\u5e7e\u7a2e\u6574\u6578\u578b\u6578\u64da\u985e\u578b\uff1a<\/p>\n<ul>\n<li><strong>SMALLINT<\/strong>: \u4f54\u75282\u500b\u5b57\u7bc0\uff0c\u7bc4\u570d\u70ba-32,768\u523032,767\u3002<\/li>\n<li><strong>INTEGER<\/strong>: \u4f54\u75284\u500b\u5b57\u7bc0\uff0c\u7bc4\u570d\u70ba-2,147,483,648\u52302,147,483,647\u3002<\/li>\n<li><strong>BIGINT<\/strong>: \u4f54\u75288\u500b\u5b57\u7bc0\uff0c\u7bc4\u570d\u70ba-9,223,372,036,854,775,808\u52309,223,372,036,854,775,807\u3002<\/li>\n<\/ul>\n<p>\u4f8b\u5982\uff0c\u82e5\u8981\u5275\u5efa\u4e00\u500b\u8868\u683c\u4ee5\u5b58\u5132\u7528\u6236\u7684\u5e74\u9f61\uff0c\u53ef\u4ee5\u4f7f\u7528SMALLINT\u985e\u578b\uff1a<\/p>\n<pre><code>CREATE TABLE Users (\n    UserID INTEGER PRIMARY KEY,\n    UserName VARCHAR(100),\n    Age SMALLINT\n);<\/code><\/pre>\n<h3 id=\"%e6%b5%ae%e9%bb%9e%e5%9e%8b%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b-WeirMMNTys\">\u6d6e\u9ede\u578b\u6578\u64da\u985e\u578b<\/h3>\n<p>\u6d6e\u9ede\u578b\u6578\u64da\u985e\u578b\u7528\u65bc\u5b58\u5132\u5e36\u6709\u5c0f\u6578\u7684\u6578\u503c\u3002DB2\u63d0\u4f9b\u4e86\u4ee5\u4e0b\u6d6e\u9ede\u578b\u6578\u64da\u985e\u578b\uff1a<\/p>\n<ul>\n<li><strong>REAL<\/strong>: \u4f54\u75284\u500b\u5b57\u7bc0\uff0c\u901a\u5e38\u7528\u65bc\u5b58\u5132\u55ae\u7cbe\u5ea6\u6d6e\u9ede\u6578\u3002<\/li>\n<li><strong>DOUBLE<\/strong>: \u4f54\u75288\u500b\u5b57\u7bc0\uff0c\u901a\u5e38\u7528\u65bc\u5b58\u5132\u96d9\u7cbe\u5ea6\u6d6e\u9ede\u6578\u3002<\/li>\n<li><strong>DECIMAL<\/strong>: \u7528\u65bc\u5b58\u5132\u7cbe\u78ba\u7684\u5c0f\u6578\uff0c\u4f54\u7528\u7684\u5b57\u7bc0\u6578\u6839\u64da\u7cbe\u5ea6\u548c\u5c0f\u6578\u4f4d\u6578\u800c\u7570\u3002<\/li>\n<\/ul>\n<p>\u4f8b\u5982\uff0c\u82e5\u8981\u5275\u5efa\u4e00\u500b\u8868\u683c\u4ee5\u5b58\u5132\u7522\u54c1\u7684\u50f9\u683c\uff0c\u53ef\u4ee5\u4f7f\u7528DECIMAL\u985e\u578b\uff1a<\/p>\n<pre><code>CREATE TABLE Products (\n    ProductID INTEGER PRIMARY KEY,\n    ProductName VARCHAR(100),\n    Price DECIMAL(10, 2)\n);<\/code><\/pre>\n<h2 id=\"%e6%95%b8%e5%80%bc%e5%9e%8b%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e7%9a%84%e9%81%b8%e6%93%87-WeirMMNTys\">\u6578\u503c\u578b\u6578\u64da\u985e\u578b\u7684\u9078\u64c7<\/h2>\n<p>\u5728\u9078\u64c7\u6578\u503c\u578b\u6578\u64da\u985e\u578b\u6642\uff0c\u9700\u8981\u8003\u616e\u4ee5\u4e0b\u5e7e\u500b\u56e0\u7d20\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u7bc4\u570d<\/strong>: \u6839\u64da\u61c9\u7528\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u7bc4\u570d\uff0c\u907f\u514d\u6ea2\u51fa\u3002<\/li>\n<li><strong>\u5b58\u5132\u7a7a\u9593<\/strong>: \u4e0d\u540c\u7684\u6578\u64da\u985e\u578b\u4f54\u7528\u4e0d\u540c\u7684\u5b58\u5132\u7a7a\u9593\uff0c\u61c9\u6839\u64da\u5be6\u969b\u9700\u6c42\u9078\u64c7\u3002<\/li>\n<li><strong>\u8a08\u7b97\u7cbe\u5ea6<\/strong>: \u5c0d\u65bc\u9700\u8981\u9ad8\u7cbe\u5ea6\u8a08\u7b97\u7684\u61c9\u7528\uff0c\u61c9\u9078\u64c7DECIMAL\u985e\u578b\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-WeirMMNTys\">\u7d50\u8ad6<\/h2>\n<p>DB2\u7684\u6578\u503c\u578b\u6578\u64da\u985e\u578b\u70ba\u958b\u767c\u8005\u63d0\u4f9b\u4e86\u9748\u6d3b\u7684\u9078\u64c7\uff0c\u4ee5\u6eff\u8db3\u4e0d\u540c\u7684\u6578\u64da\u5b58\u5132\u9700\u6c42\u3002\u4e86\u89e3\u9019\u4e9b\u6578\u64da\u985e\u578b\u7684\u7279\u6027\u548c\u4f7f\u7528\u65b9\u6cd5\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u5728\u8a2d\u8a08\u6578\u64da\u5eab\u6642\u505a\u51fa\u66f4\u660e\u667a\u7684\u6c7a\u7b56\u3002<\/p>\n<p>\u5982\u9700\u9032\u4e00\u6b65\u4e86\u89e3DB2\u6216\u5176\u4ed6\u6578\u64da\u5eab\u6280\u8853\uff0c\u60a8\u53ef\u4ee5\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u642d\u5efa\u60a8\u7684\u958b\u767c\u74b0\u5883\uff0c\u9032\u884c\u5be6\u9a57\u548c\u5b78\u7fd2\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3DB2\u4e2d\u7684\u6578\u503c\u578b\u6578\u64da\u985e\u578b\uff0c\u5305\u62ec\u6574\u6578\u3001\u6d6e\u9ede\u6578\u548c\u5341\u9032\u5236\uff0c\u52a9\u60a8\u6709\u6548\u7ba1\u7406\u6578\u64da\u5eab\u4e2d\u7684\u6578\u64da\u3002<\/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-60899","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60899","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=60899"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60899\/revisions"}],"predecessor-version":[{"id":60900,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60899\/revisions\/60900"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=60899"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=60899"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=60899"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}