{"id":60871,"date":"2024-10-13T06:31:16","date_gmt":"2024-10-12T22:31:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/60871\/"},"modified":"2024-10-13T06:31:16","modified_gmt":"2024-10-12T22:31:16","slug":"db2%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e7%9a%84%e5%ad%97%e6%ae%b5%e9%a1%9e%e5%9e%8b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/60871\/","title":{"rendered":"DB2\u6578\u64da\u5eab\u4e2d\u7684\u5b57\u6bb5\u985e\u578b"},"content":{"rendered":"<h1 id=\"db2%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e7%9a%84%e5%ad%97%e6%ae%b5%e9%a1%9e%e5%9e%8b-IJgBToREol\">DB2\u6578\u64da\u5eab\u4e2d\u7684\u5b57\u6bb5\u985e\u578b<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u5b57\u6bb5\u985e\u578b\u662f\u5b9a\u7fa9\u6578\u64da\u7d50\u69cb\u7684\u57fa\u790e\u3002IBM\u7684DB2\u6578\u64da\u5eab\u7cfb\u7d71\u63d0\u4f9b\u4e86\u591a\u7a2e\u5b57\u6bb5\u985e\u578b\uff0c\u4ee5\u6eff\u8db3\u4e0d\u540c\u61c9\u7528\u5834\u666f\u7684\u9700\u6c42\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eDB2\u4e2d\u7684\u4e3b\u8981\u5b57\u6bb5\u985e\u578b\u53ca\u5176\u7279\u9ede\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u597d\u5730\u8a2d\u8a08\u6578\u64da\u5eab\u7d50\u69cb\u3002<\/p>\n<h2 id=\"1-%e6%95%b8%e5%ad%97%e9%a1%9e%e5%9e%8b-IJgBToREol\">1. \u6578\u5b57\u985e\u578b<\/h2>\n<p>\u6578\u5b57\u985e\u578b\u7528\u65bc\u5b58\u5132\u6578\u503c\u6578\u64da\uff0cDB2\u652f\u6301\u591a\u7a2e\u6578\u5b57\u985e\u578b\uff0c\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>INTEGER<\/strong>: \u7528\u65bc\u5b58\u5132\u6574\u6578\uff0c\u7bc4\u570d\u70ba-2,147,483,648\u52302,147,483,647\u3002<\/li>\n<li><strong>SMALLINT<\/strong>: \u7528\u65bc\u5b58\u5132\u5c0f\u7bc4\u570d\u7684\u6574\u6578\uff0c\u7bc4\u570d\u70ba-32,768\u523032,767\u3002<\/li>\n<li><strong>BIGINT<\/strong>: \u7528\u65bc\u5b58\u5132\u5927\u7bc4\u570d\u7684\u6574\u6578\uff0c\u7bc4\u570d\u70ba-9,223,372,036,854,775,808\u52309,223,372,036,854,775,807\u3002<\/li>\n<li><strong>DECIMAL(p,s)<\/strong>: \u7528\u65bc\u5b58\u5132\u7cbe\u78ba\u7684\u5341\u9032\u5236\u6578\uff0c\u5176\u4e2dp\u8868\u793a\u7e3d\u4f4d\u6578\uff0cs\u8868\u793a\u5c0f\u6578\u4f4d\u6578\u3002<\/li>\n<li><strong>FLOAT<\/strong>: \u7528\u65bc\u5b58\u5132\u6d6e\u9ede\u6578\uff0c\u9069\u5408\u9700\u8981\u9ad8\u7cbe\u5ea6\u7684\u8a08\u7b97\u3002<\/li>\n<\/ul>\n<h2 id=\"2-%e5%ad%97%e7%ac%a6%e4%b8%b2%e9%a1%9e%e5%9e%8b-IJgBToREol\">2. \u5b57\u7b26\u4e32\u985e\u578b<\/h2>\n<p>\u5b57\u7b26\u4e32\u985e\u578b\u7528\u65bc\u5b58\u5132\u6587\u672c\u6578\u64da\uff0cDB2\u63d0\u4f9b\u4e86\u4ee5\u4e0b\u5e7e\u7a2e\u9078\u64c7\uff1a<\/p>\n<ul>\n<li><strong>CHAR(n)<\/strong>: \u56fa\u5b9a\u9577\u5ea6\u7684\u5b57\u7b26\u578b\uff0cn\u8868\u793a\u5b57\u7b26\u6578\uff0c\u82e5\u4e0d\u8db3n\u5247\u7528\u7a7a\u683c\u586b\u5145\u3002<\/li>\n<li><strong>VARCHAR(n)<\/strong>: \u53ef\u8b8a\u9577\u5ea6\u7684\u5b57\u7b26\u578b\uff0cn\u8868\u793a\u6700\u5927\u5b57\u7b26\u6578\uff0c\u9069\u5408\u5b58\u5132\u9577\u5ea6\u4e0d\u4e00\u7684\u5b57\u7b26\u4e32\u3002<\/li>\n<li><strong>CLOB<\/strong>: \u7528\u65bc\u5b58\u5132\u5927\u91cf\u6587\u672c\u6578\u64da\uff0c\u9069\u5408\u5b58\u5132\u9577\u7bc7\u6587\u7ae0\u6216\u6587\u6a94\u3002<\/li>\n<\/ul>\n<h2 id=\"3-%e6%97%a5%e6%9c%9f%e5%92%8c%e6%99%82%e9%96%93%e9%a1%9e%e5%9e%8b-IJgBToREol\">3. \u65e5\u671f\u548c\u6642\u9593\u985e\u578b<\/h2>\n<p>DB2\u652f\u6301\u591a\u7a2e\u65e5\u671f\u548c\u6642\u9593\u985e\u578b\uff0c\u65b9\u4fbf\u7528\u6236\u9032\u884c\u6642\u9593\u76f8\u95dc\u7684\u64cd\u4f5c\uff1a<\/p>\n<ul>\n<li><strong>DATE<\/strong>: \u7528\u65bc\u5b58\u5132\u65e5\u671f\uff0c\u683c\u5f0f\u70baYYYY-MM-DD\u3002<\/li>\n<li><strong>TIME<\/strong>: \u7528\u65bc\u5b58\u5132\u6642\u9593\uff0c\u683c\u5f0f\u70baHH:MM:SS\u3002<\/li>\n<li><strong>TIMESTAMP<\/strong>: \u7528\u65bc\u5b58\u5132\u65e5\u671f\u548c\u6642\u9593\u7684\u7d44\u5408\uff0c\u683c\u5f0f\u70baYYYY-MM-DD HH:MM:SS\u3002<\/li>\n<\/ul>\n<h2 id=\"4-%e4%ba%8c%e9%80%b2%e5%88%b6%e9%a1%9e%e5%9e%8b-IJgBToREol\">4. \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\uff1a<\/p>\n<ul>\n<li><strong>BLOB<\/strong>: \u7528\u65bc\u5b58\u5132\u4e8c\u9032\u5236\u5927\u5c0d\u8c61\uff0c\u9069\u5408\u5b58\u5132\u5716\u50cf\u3001\u97f3\u983b\u6216\u8996\u983b\u6587\u4ef6\u3002<\/li>\n<\/ul>\n<h2 id=\"5-%e5%85%b6%e4%bb%96%e9%a1%9e%e5%9e%8b-IJgBToREol\">5. \u5176\u4ed6\u985e\u578b<\/h2>\n<p>\u9664\u4e86\u4e0a\u8ff0\u985e\u578b\uff0cDB2\u9084\u652f\u6301\u4e00\u4e9b\u7279\u6b8a\u7684\u5b57\u6bb5\u985e\u578b\uff1a<\/p>\n<ul>\n<li><strong>XML<\/strong>: \u7528\u65bc\u5b58\u5132XML\u6578\u64da\uff0c\u9069\u5408\u9700\u8981\u8655\u7406\u7d50\u69cb\u5316\u6578\u64da\u7684\u61c9\u7528\u3002<\/li>\n<li><strong>ROWID<\/strong>: \u7528\u65bc\u552f\u4e00\u6a19\u8b58\u6578\u64da\u5eab\u4e2d\u7684\u884c\u3002<\/li>\n<\/ul>\n<h2 id=\"6-%e5%ad%97%e6%ae%b5%e9%a1%9e%e5%9e%8b%e7%9a%84%e9%81%b8%e6%93%87-IJgBToREol\">6. \u5b57\u6bb5\u985e\u578b\u7684\u9078\u64c7<\/h2>\n<p>\u9078\u64c7\u5408\u9069\u7684\u5b57\u6bb5\u985e\u578b\u5c0d\u65bc\u6578\u64da\u5eab\u6027\u80fd\u548c\u5b58\u5132\u6548\u7387\u81f3\u95dc\u91cd\u8981\u3002\u958b\u767c\u8005\u61c9\u6839\u64da\u5be6\u969b\u9700\u6c42\u4f86\u9078\u64c7\u5b57\u6bb5\u985e\u578b\u3002\u4f8b\u5982\uff0c\u5c0d\u65bc\u9700\u8981\u9ad8\u7cbe\u5ea6\u8a08\u7b97\u7684\u8ca1\u52d9\u61c9\u7528\uff0c\u61c9\u9078\u64c7DECIMAL\u985e\u578b\uff1b\u800c\u5c0d\u65bc\u5b58\u5132\u9577\u6587\u672c\u7684\u61c9\u7528\uff0c\u5247\u61c9\u9078\u64c7CLOB\u985e\u578b\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-IJgBToREol\">\u7e3d\u7d50<\/h2>\n<p>DB2\u6578\u64da\u5eab\u63d0\u4f9b\u4e86\u591a\u7a2e\u5b57\u6bb5\u985e\u578b\uff0c\u4ee5\u6eff\u8db3\u4e0d\u540c\u7684\u6578\u64da\u5b58\u5132\u9700\u6c42\u3002\u4e86\u89e3\u9019\u4e9b\u5b57\u6bb5\u985e\u578b\u7684\u7279\u9ede\u548c\u9069\u7528\u5834\u666f\uff0c\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u6709\u6548\u5730\u8a2d\u8a08\u6578\u64da\u5eab\u7d50\u69cb\u3002\u82e5\u60a8\u9700\u8981\u9032\u4e00\u6b65\u4e86\u89e3\u5982\u4f55\u5728\u9999\u6e2f\u4f7f\u7528<code><a href=\"https:\/\/server.hk\">VPS<\/a><\/code> \u4f86\u90e8\u7f72DB2\u6578\u64da\u5eab\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3DB2\u6578\u64da\u5eab\u4e2d\u7684\u5b57\u6bb5\u985e\u578b\uff0c\u5305\u62ec\u6574\u6578\u3001\u5b57\u7b26\u3001\u65e5\u671f\u7b49\uff0c\u5e6b\u52a9\u60a8\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u7d50\u69cb\u4ee5\u512a\u5316\u6027\u80fd\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-60871","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60871","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=60871"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60871\/revisions"}],"predecessor-version":[{"id":60872,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60871\/revisions\/60872"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=60871"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=60871"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=60871"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}