{"id":60891,"date":"2024-10-13T06:41:16","date_gmt":"2024-10-12T22:41:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/60891\/"},"modified":"2024-10-13T06:41:16","modified_gmt":"2024-10-12T22:41:16","slug":"db2%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e8%88%87db2%e5%85%a7%e7%bd%ae%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/60891\/","title":{"rendered":"DB2\u6578\u64da\u985e\u578b\u8207DB2\u5167\u7f6e\u6578\u64da\u985e\u578b"},"content":{"rendered":"<h1 id=\"db2%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e8%88%87db2%e5%85%a7%e7%bd%ae%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b-pzwdhTjyLQ\">DB2\u6578\u64da\u985e\u578b\u8207DB2\u5167\u7f6e\u6578\u64da\u985e\u578b<\/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\u3001\u67e5\u8a62\u548c\u8655\u7406\u81f3\u95dc\u91cd\u8981\u3002IBM\u7684DB2\u6578\u64da\u5eab\u7cfb\u7d71\u63d0\u4f9b\u4e86\u591a\u7a2e\u6578\u64da\u985e\u578b\uff0c\u4ee5\u6eff\u8db3\u4e0d\u540c\u61c9\u7528\u5834\u666f\u7684\u9700\u6c42\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eDB2\u7684\u6578\u64da\u985e\u578b\u53ca\u5176\u5167\u7f6e\u6578\u64da\u985e\u578b\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u597d\u5730\u7406\u89e3\u548c\u4f7f\u7528\u9019\u4e9b\u6578\u64da\u985e\u578b\u3002<\/p>\n<h2 id=\"db2%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e6%a6%82%e8%bf%b0-pzwdhTjyLQ\">DB2\u6578\u64da\u985e\u578b\u6982\u8ff0<\/h2>\n<p>DB2\u652f\u6301\u591a\u7a2e\u6578\u64da\u985e\u578b\uff0c\u4e3b\u8981\u53ef\u4ee5\u5206\u70ba\u4ee5\u4e0b\u5e7e\u985e\uff1a<\/p>\n<ul>\n<li><strong id=\"%e6%95%b8%e5%80%bc%e9%a1%9e%e5%9e%8b-pzwdhTjyLQ\">\u6578\u503c\u985e\u578b<\/strong><\/li>\n<li><strong id=\"%e5%ad%97%e7%ac%a6%e9%a1%9e%e5%9e%8b-pzwdhTjyLQ\">\u5b57\u7b26\u985e\u578b<\/strong><\/li>\n<li><strong id=\"%e6%97%a5%e6%9c%9f%e5%92%8c%e6%99%82%e9%96%93%e9%a1%9e%e5%9e%8b-pzwdhTjyLQ\">\u65e5\u671f\u548c\u6642\u9593\u985e\u578b<\/strong><\/li>\n<li><strong id=\"%e4%ba%8c%e9%80%b2%e5%88%b6%e9%a1%9e%e5%9e%8b-pzwdhTjyLQ\">\u4e8c\u9032\u5236\u985e\u578b<\/strong><\/li>\n<li><strong id=\"%e5%a4%a7%e5%b0%8d%e8%b1%a1%e9%a1%9e%e5%9e%8b-pzwdhTjyLQ\">\u5927\u5c0d\u8c61\u985e\u578b<\/strong><\/li>\n<\/ul>\n<h2 id=\"%e6%95%b8%e5%80%bc%e9%a1%9e%e5%9e%8b-pzwdhTjyLQ\">\u6578\u503c\u985e\u578b<\/h2>\n<p>\u6578\u503c\u985e\u578b\u7528\u65bc\u5b58\u5132\u6574\u6578\u548c\u6d6e\u9ede\u6578\u3002DB2\u63d0\u4f9b\u4e86\u4ee5\u4e0b\u5e7e\u7a2e\u6578\u503c\u985e\u578b\uff1a<\/p>\n<ul>\n<li><code>SMALLINT<\/code>: 2\u5b57\u7bc0\u6574\u6578\uff0c\u7bc4\u570d\u70ba-32,768\u523032,767\u3002<\/li>\n<li><code>INTEGER<\/code>: 4\u5b57\u7bc0\u6574\u6578\uff0c\u7bc4\u570d\u70ba-2,147,483,648\u52302,147,483,647\u3002<\/li>\n<li><code>BIGINT<\/code>: 8\u5b57\u7bc0\u6574\u6578\uff0c\u7bc4\u570d\u70ba-9,223,372,036,854,775,808\u52309,223,372,036,854,775,807\u3002<\/li>\n<li><code>DECIMAL(p,s)<\/code>: \u7cbe\u78ba\u7684\u5341\u9032\u5236\u6578\uff0c<code>p<\/code>\u8868\u793a\u7e3d\u4f4d\u6578\uff0c<code>s<\/code>\u8868\u793a\u5c0f\u6578\u4f4d\u6578\u3002<\/li>\n<li><code>FLOAT<\/code>: \u6d6e\u9ede\u6578\uff0c\u901a\u5e38\u7528\u65bc\u5b58\u5132\u79d1\u5b78\u8a08\u7b97\u4e2d\u7684\u6578\u503c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%ad%97%e7%ac%a6%e9%a1%9e%e5%9e%8b-pzwdhTjyLQ\">\u5b57\u7b26\u985e\u578b<\/h2>\n<p>\u5b57\u7b26\u985e\u578b\u7528\u65bc\u5b58\u5132\u6587\u672c\u6578\u64da\u3002DB2\u63d0\u4f9b\u4e86\u4ee5\u4e0b\u5b57\u7b26\u985e\u578b\uff1a<\/p>\n<ul>\n<li><code>CHAR(n)<\/code>: \u56fa\u5b9a\u9577\u5ea6\u5b57\u7b26\uff0c<code>n<\/code>\u8868\u793a\u5b57\u7b26\u6578\uff0c\u6700\u5927\u9577\u5ea6\u70ba254\u3002<\/li>\n<li><code>VARCHAR(n)<\/code>: \u53ef\u8b8a\u9577\u5ea6\u5b57\u7b26\uff0c<code>n<\/code>\u8868\u793a\u6700\u5927\u5b57\u7b26\u6578\uff0c\u6700\u5927\u9577\u5ea6\u70ba32,767\u3002<\/li>\n<li><code>CLOB<\/code>: \u5927\u5b57\u7b26\u5c0d\u8c61\uff0c\u9069\u5408\u5b58\u5132\u5927\u91cf\u6587\u672c\u6578\u64da\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%97%a5%e6%9c%9f%e5%92%8c%e6%99%82%e9%96%93%e9%a1%9e%e5%9e%8b-pzwdhTjyLQ\">\u65e5\u671f\u548c\u6642\u9593\u985e\u578b<\/h2>\n<p>DB2\u652f\u6301\u591a\u7a2e\u65e5\u671f\u548c\u6642\u9593\u985e\u578b\uff0c\u4e3b\u8981\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><code>DATE<\/code>: \u5b58\u5132\u65e5\u671f\uff0c\u683c\u5f0f\u70baYYYY-MM-DD\u3002<\/li>\n<li><code>TIME<\/code>: \u5b58\u5132\u6642\u9593\uff0c\u683c\u5f0f\u70baHH:MM:SS\u3002<\/li>\n<li><code>TIMESTAMP<\/code>: \u5b58\u5132\u65e5\u671f\u548c\u6642\u9593\uff0c\u683c\u5f0f\u70baYYYY-MM-DD HH:MM:SS\u3002<\/li>\n<\/ul>\n<h2 id=\"%e4%ba%8c%e9%80%b2%e5%88%b6%e9%a1%9e%e5%9e%8b-pzwdhTjyLQ\">\u4e8c\u9032\u5236\u985e\u578b<\/h2>\n<p>\u4e8c\u9032\u5236\u985e\u578b\u7528\u65bc\u5b58\u5132\u4e8c\u9032\u5236\u6578\u64da\uff0c\u5982\u5716\u50cf\u6216\u6587\u4ef6\u3002DB2\u63d0\u4f9b\u4e86\u4ee5\u4e0b\u4e8c\u9032\u5236\u985e\u578b\uff1a<\/p>\n<ul>\n<li><code>VARBINARY(n)<\/code>: \u53ef\u8b8a\u9577\u5ea6\u4e8c\u9032\u5236\u6578\u64da\uff0c<code>n<\/code>\u8868\u793a\u6700\u5927\u5b57\u7bc0\u6578\u3002<\/li>\n<li><code>BLOB<\/code>: \u5927\u4e8c\u9032\u5236\u5c0d\u8c61\uff0c\u9069\u5408\u5b58\u5132\u5927\u91cf\u4e8c\u9032\u5236\u6578\u64da\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a4%a7%e5%b0%8d%e8%b1%a1%e9%a1%9e%e5%9e%8b-pzwdhTjyLQ\">\u5927\u5c0d\u8c61\u985e\u578b<\/h2>\n<p>\u5927\u5c0d\u8c61\u985e\u578b\u4e3b\u8981\u7528\u65bc\u5b58\u5132\u5927\u91cf\u6578\u64da\uff0c\u5982\u6587\u672c\u6216\u4e8c\u9032\u5236\u6578\u64da\u3002DB2\u7684\u4e3b\u8981\u5927\u5c0d\u8c61\u985e\u578b\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><code>CLOB<\/code>: \u5927\u5b57\u7b26\u5c0d\u8c61\uff0c\u9069\u5408\u5b58\u5132\u5927\u91cf\u6587\u672c\u3002<\/li>\n<li><code>BLOB<\/code>: \u5927\u4e8c\u9032\u5236\u5c0d\u8c61\uff0c\u9069\u5408\u5b58\u5132\u5927\u91cf\u4e8c\u9032\u5236\u6578\u64da\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-pzwdhTjyLQ\">\u7d50\u8ad6<\/h2>\n<p>DB2\u63d0\u4f9b\u4e86\u591a\u7a2e\u6578\u64da\u985e\u578b\uff0c\u4ee5\u6eff\u8db3\u4e0d\u540c\u61c9\u7528\u7684\u9700\u6c42\u3002\u4e86\u89e3\u9019\u4e9b\u6578\u64da\u985e\u578b\u7684\u7279\u6027\u548c\u4f7f\u7528\u5834\u666f\uff0c\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u5728\u8a2d\u8a08\u6578\u64da\u5eab\u6642\u505a\u51fa\u66f4\u660e\u667a\u7684\u9078\u64c7\u3002\u7121\u8ad6\u662f\u6578\u503c\u3001\u5b57\u7b26\u9084\u662f\u5927\u5c0d\u8c61\u985e\u578b\uff0cDB2\u90fd\u80fd\u63d0\u4f9b\u9748\u6d3b\u7684\u89e3\u6c7a\u65b9\u6848\uff0c\u652f\u6301\u5404\u7a2e\u696d\u52d9\u9700\u6c42\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc<code>VPS<\/code>\u3001<code>\u9999\u6e2fVPS<\/code>\u53ca\u5176\u4ed6<code>\u4f3a\u670d\u5668<\/code>\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9 <a 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