{"id":60893,"date":"2024-10-13T06:42:14","date_gmt":"2024-10-12T22:42:14","guid":{"rendered":"https:\/\/server.hk\/cnblog\/60893\/"},"modified":"2024-10-13T06:42:14","modified_gmt":"2024-10-12T22:42:14","slug":"db2%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e6%9c%80%e7%82%ba%e5%b8%b8%e7%94%a8%e7%9a%84%e6%9c%89%e5%93%aa%e5%b9%be%e7%a8%ae%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/60893\/","title":{"rendered":"DB2\u6578\u64da\u985e\u578b\u6700\u70ba\u5e38\u7528\u7684\u6709\u54ea\u5e7e\u7a2e\uff1f"},"content":{"rendered":"<h1 id=\"db2%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e6%9c%80%e7%82%ba%e5%b8%b8%e7%94%a8%e7%9a%84%e6%9c%89%e5%93%aa%e5%b9%be%e7%a8%ae%ef%bc%9f-WUBFLCrOCx\">DB2\u6578\u64da\u985e\u578b\u6700\u70ba\u5e38\u7528\u7684\u6709\u54ea\u5e7e\u7a2e\uff1f<\/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\u63a2\u8a0eDB2\u4e2d\u6700\u5e38\u7528\u7684\u6578\u64da\u985e\u578b\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u793a\u4f8b\u4ee5\u5e6b\u52a9\u7406\u89e3\u3002<\/p>\n<h2 id=\"1-%e6%95%b4%e6%95%b8%e9%a1%9e%e5%9e%8b-WUBFLCrOCx\">1. \u6574\u6578\u985e\u578b<\/h2>\n<p>\u6574\u6578\u985e\u578b\u662fDB2\u4e2d\u6700\u57fa\u672c\u7684\u6578\u64da\u985e\u578b\u4e4b\u4e00\uff0c\u4e3b\u8981\u7528\u65bc\u5b58\u5132\u6574\u6578\u503c\u3002DB2\u63d0\u4f9b\u4e86\u5e7e\u7a2e\u4e0d\u540c\u5927\u5c0f\u7684\u6574\u6578\u985e\u578b\uff1a<\/p>\n<ul>\n<li><code>SMALLINT<\/code>\uff1a\u4f54\u75282\u500b\u5b57\u7bc0\uff0c\u7bc4\u570d\u70ba-32,768\u523032,767\u3002<\/li>\n<li><code>INTEGER<\/code>\uff1a\u4f54\u75284\u500b\u5b57\u7bc0\uff0c\u7bc4\u570d\u70ba-2,147,483,648\u52302,147,483,647\u3002<\/li>\n<li><code>BIGINT<\/code>\uff1a\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>\u9019\u4e9b\u6574\u6578\u985e\u578b\u9069\u7528\u65bc\u9700\u8981\u9032\u884c\u6578\u5b78\u8a08\u7b97\u6216\u7d71\u8a08\u5206\u6790\u7684\u5834\u666f\u3002<\/p>\n<h2 id=\"2-%e6%b5%ae%e9%bb%9e%e6%95%b8%e9%a1%9e%e5%9e%8b-WUBFLCrOCx\">2. \u6d6e\u9ede\u6578\u985e\u578b<\/h2>\n<p>\u6d6e\u9ede\u6578\u985e\u578b\u7528\u65bc\u5b58\u5132\u5e36\u6709\u5c0f\u6578\u7684\u6578\u503c\uff0cDB2\u63d0\u4f9b\u4e86\u4ee5\u4e0b\u5e7e\u7a2e\u6d6e\u9ede\u6578\u985e\u578b\uff1a<\/p>\n<ul>\n<li><code>REAL<\/code>\uff1a\u4f54\u75284\u500b\u5b57\u7bc0\uff0c\u901a\u5e38\u7528\u65bc\u5b58\u5132\u55ae\u7cbe\u5ea6\u6d6e\u9ede\u6578\u3002<\/li>\n<li><code>DOUBLE<\/code>\uff1a\u4f54\u75288\u500b\u5b57\u7bc0\uff0c\u901a\u5e38\u7528\u65bc\u5b58\u5132\u96d9\u7cbe\u5ea6\u6d6e\u9ede\u6578\u3002<\/li>\n<\/ul>\n<p>\u9019\u4e9b\u985e\u578b\u9069\u5408\u9700\u8981\u9ad8\u7cbe\u5ea6\u8a08\u7b97\u7684\u61c9\u7528\uff0c\u4f8b\u5982\u79d1\u5b78\u8a08\u7b97\u548c\u91d1\u878d\u5206\u6790\u3002<\/p>\n<h2 id=\"3-%e5%ad%97%e7%ac%a6%e4%b8%b2%e9%a1%9e%e5%9e%8b-WUBFLCrOCx\">3. \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\u591a\u7a2e\u9078\u64c7\uff1a<\/p>\n<ul>\n<li><code>CHAR(n)<\/code>\uff1a\u56fa\u5b9a\u9577\u5ea6\u7684\u5b57\u7b26\u578b\uff0c\u6700\u591a\u53ef\u5b58\u5132n\u500b\u5b57\u7b26\u3002<\/li>\n<li><code>VARCHAR(n)<\/code>\uff1a\u53ef\u8b8a\u9577\u5ea6\u7684\u5b57\u7b26\u578b\uff0c\u6700\u591a\u53ef\u5b58\u5132n\u500b\u5b57\u7b26\uff0c\u9069\u5408\u5b58\u5132\u9577\u5ea6\u4e0d\u4e00\u7684\u5b57\u7b26\u4e32\u3002<\/li>\n<li><code>CLOB<\/code>\uff1a\u7528\u65bc\u5b58\u5132\u5927\u91cf\u6587\u672c\u6578\u64da\uff0c\u9069\u5408\u5b58\u5132\u9577\u6587\u672c\u6216\u6587\u6a94\u3002<\/li>\n<\/ul>\n<p>\u9019\u4e9b\u5b57\u7b26\u4e32\u985e\u578b\u5728\u8655\u7406\u7528\u6236\u8f38\u5165\u3001\u6587\u6a94\u5b58\u5132\u7b49\u5834\u666f\u4e2d\u975e\u5e38\u6709\u7528\u3002<\/p>\n<h2 id=\"4-%e6%97%a5%e6%9c%9f%e5%92%8c%e6%99%82%e9%96%93%e9%a1%9e%e5%9e%8b-WUBFLCrOCx\">4. \u65e5\u671f\u548c\u6642\u9593\u985e\u578b<\/h2>\n<p>DB2\u63d0\u4f9b\u4e86\u5c08\u9580\u7684\u6578\u64da\u985e\u578b\u4f86\u8655\u7406\u65e5\u671f\u548c\u6642\u9593\uff1a<\/p>\n<ul>\n<li><code>DATE<\/code>\uff1a\u7528\u65bc\u5b58\u5132\u65e5\u671f\uff0c\u683c\u5f0f\u70baYYYY-MM-DD\u3002<\/li>\n<li><code>TIME<\/code>\uff1a\u7528\u65bc\u5b58\u5132\u6642\u9593\uff0c\u683c\u5f0f\u70baHH:MM:SS\u3002<\/li>\n<li><code>TIMESTAMP<\/code>\uff1a\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<p>\u9019\u4e9b\u985e\u578b\u5728\u9700\u8981\u9032\u884c\u6642\u9593\u6233\u8a18\u3001\u65e5\u8a8c\u8a18\u9304\u6216\u4e8b\u4ef6\u8ffd\u8e64\u7684\u61c9\u7528\u4e2d\u975e\u5e38\u91cd\u8981\u3002<\/p>\n<h2 id=\"5-%e4%ba%8c%e9%80%b2%e5%88%b6%e9%a1%9e%e5%9e%8b-WUBFLCrOCx\">5. \u4e8c\u9032\u5236\u985e\u578b<\/h2>\n<p>\u4e8c\u9032\u5236\u985e\u578b\u7528\u65bc\u5b58\u5132\u4e8c\u9032\u5236\u6578\u64da\uff0c\u4f8b\u5982\u5716\u50cf\u6216\u6587\u4ef6\uff1a<\/p>\n<ul>\n<li><code>VARBINARY(n)<\/code>\uff1a\u53ef\u8b8a\u9577\u5ea6\u7684\u4e8c\u9032\u5236\u6578\u64da\uff0c\u6700\u591a\u53ef\u5b58\u5132n\u500b\u5b57\u7bc0\u3002<\/li>\n<li><code>BLOB<\/code>\uff1a\u7528\u65bc\u5b58\u5132\u5927\u91cf\u4e8c\u9032\u5236\u6578\u64da\uff0c\u9069\u5408\u5b58\u5132\u5716\u50cf\u3001\u97f3\u983b\u6216\u8996\u983b\u6587\u4ef6\u3002<\/li>\n<\/ul>\n<p>\u9019\u4e9b\u985e\u578b\u5728\u591a\u5a92\u9ad4\u61c9\u7528\u548c\u6587\u4ef6\u5b58\u5132\u4e2d\u975e\u5e38\u6709\u7528\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-WUBFLCrOCx\">\u7e3d\u7d50<\/h2>\n<p>DB2\u6578\u64da\u5eab\u7cfb\u7d71\u63d0\u4f9b\u4e86\u591a\u7a2e\u6578\u64da\u985e\u578b\uff0c\u4ee5\u6eff\u8db3\u4e0d\u540c\u61c9\u7528\u7684\u9700\u6c42\u3002\u5f9e\u6574\u6578\u3001\u6d6e\u9ede\u6578\u5230\u5b57\u7b26\u4e32\u3001\u65e5\u671f\u548c\u4e8c\u9032\u5236\u6578\u64da\u985e\u578b\uff0c\u6bcf\u4e00\u7a2e\u90fd\u6709\u5176\u7279\u5b9a\u7684\u7528\u9014\u548c\u512a\u52e2\u3002\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\u4e0d\u50c5\u80fd\u63d0\u9ad8\u6578\u64da\u7684\u5b58\u5132\u6548\u7387\uff0c\u9084\u80fd\u63d0\u5347\u67e5\u8a62\u6027\u80fd\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u6578\u64da\u5eab\u7ba1\u7406\u6216\u5176\u4ed6\u6280\u8853\u89e3\u6c7a\u65b9\u6848\u6709\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4e86\u89e3\u66f4\u591a\u8cc7\u8a0a\uff0c\u7279\u5225\u662f\u6211\u5011\u7684<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u548c<a href=\"https:\/\/server.hk\">\u96f2\u4f3a\u670d\u5668<\/a>\u670d\u52d9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3DB2\u6578\u64da\u985e\u578b\u7684\u5e38\u7528\u9078\u64c7\uff0c\u5305\u62ec\u6574\u6578\u3001\u6d6e\u9ede\u6578\u3001\u5b57\u7b26\u3001\u65e5\u671f\u548c\u6642\u9593\u7b49\uff0c\u52a9\u60a8\u512a\u5316\u6578\u64da\u5eab\u8a2d\u8a08\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-60893","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60893","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=60893"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60893\/revisions"}],"predecessor-version":[{"id":60894,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60893\/revisions\/60894"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=60893"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=60893"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=60893"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}