{"id":161179,"date":"2024-11-04T04:16:22","date_gmt":"2024-11-03T20:16:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/161179\/"},"modified":"2024-11-04T04:16:23","modified_gmt":"2024-11-03T20:16:23","slug":"%e5%9f%ba%e7%a4%8e%e7%9f%a5%e4%b9%8b-db2-%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e4%b8%8d%e5%be%97%e4%b8%8d%e7%9c%8b%ef%bc%81","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/161179\/","title":{"rendered":"\u57fa\u790e\u77e5\u4e4b DB2 \u6578\u64da\u985e\u578b\u4e0d\u5f97\u4e0d\u770b\uff01"},"content":{"rendered":"<h1 id=\"%e5%9f%ba%e7%a4%8e%e7%9f%a5%e4%b9%8b-db2-%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e4%b8%8d%e5%be%97%e4%b8%8d%e7%9c%8b%ef%bc%81-njxnnEIOeP\">\u57fa\u790e\u77e5\u4e4b DB2 \u6578\u64da\u985e\u578b\u4e0d\u5f97\u4e0d\u770b\uff01<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u6578\u64da\u985e\u578b\u662f\u8a2d\u8a08\u548c\u5be6\u73fe\u6578\u64da\u7d50\u69cb\u7684\u57fa\u790e\u3002IBM \u7684 DB2 \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\u8a0e DB2 \u7684\u4e3b\u8981\u6578\u64da\u985e\u578b\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u548c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u66f4\u597d\u5730\u7406\u89e3\u548c\u4f7f\u7528\u9019\u4e9b\u985e\u578b\u3002<\/p>\n<h2 id=\"1-%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e6%a6%82%e8%bf%b0-njxnnEIOeP\">1. \u6578\u64da\u985e\u578b\u6982\u8ff0<\/h2>\n<p>DB2 \u6578\u64da\u985e\u578b\u53ef\u4ee5\u5206\u70ba\u5e7e\u500b\u4e3b\u8981\u985e\u5225\uff0c\u5305\u62ec\u6574\u6578\u985e\u578b\u3001\u6d6e\u9ede\u6578\u985e\u578b\u3001\u5b57\u7b26\u985e\u578b\u3001\u65e5\u671f\u548c\u6642\u9593\u985e\u578b\u7b49\u3002\u6bcf\u7a2e\u6578\u64da\u985e\u578b\u90fd\u6709\u5176\u7279\u5b9a\u7684\u7528\u9014\u548c\u9650\u5236\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\u5c0d\u65bc\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u5b58\u5132\u6548\u7387\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n<h2 id=\"2-%e6%95%b4%e6%95%b8%e9%a1%9e%e5%9e%8b-njxnnEIOeP\">2. \u6574\u6578\u985e\u578b<\/h2>\n<p>\u6574\u6578\u985e\u578b\u7528\u65bc\u5b58\u5132\u6574\u6578\u503c\uff0cDB2 \u63d0\u4f9b\u4e86\u591a\u7a2e\u6574\u6578\u985e\u578b\uff0c\u4e3b\u8981\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><code>SMALLINT<\/code>\uff1a\u4f54\u7528 2 \u5b57\u7bc0\uff0c\u7bc4\u570d\u70ba -32,768 \u5230 32,767\u3002<\/li>\n<li><code>INTEGER<\/code>\uff1a\u4f54\u7528 4 \u5b57\u7bc0\uff0c\u7bc4\u570d\u70ba -2,147,483,648 \u5230 2,147,483,647\u3002<\/li>\n<li><code>BIGINT<\/code>\uff1a\u4f54\u7528 8 \u5b57\u7bc0\uff0c\u7bc4\u570d\u70ba -9,223,372,036,854,775,808 \u5230 9,223,372,036,854,775,807\u3002<\/li>\n<\/ul>\n<p>\u6574\u6578\u985e\u578b\u9069\u5408\u7528\u65bc\u8a08\u6578\u3001\u7d22\u5f15\u7b49\u9700\u8981\u7cbe\u78ba\u6574\u6578\u7684\u5834\u666f\u3002<\/p>\n<h2 id=\"3-%e6%b5%ae%e9%bb%9e%e6%95%b8%e9%a1%9e%e5%9e%8b-njxnnEIOeP\">3. \u6d6e\u9ede\u6578\u985e\u578b<\/h2>\n<p>\u6d6e\u9ede\u6578\u985e\u578b\u7528\u65bc\u5b58\u5132\u5e36\u5c0f\u6578\u7684\u6578\u503c\uff0cDB2 \u63d0\u4f9b\u4e86\u4ee5\u4e0b\u985e\u578b\uff1a<\/p>\n<ul>\n<li><code>REAL<\/code>\uff1a\u4f54\u7528 4 \u5b57\u7bc0\uff0c\u901a\u5e38\u7528\u65bc\u9700\u8981\u55ae\u7cbe\u5ea6\u7684\u6d6e\u9ede\u6578\u3002<\/li>\n<li><code>DOUBLE<\/code>\uff1a\u4f54\u7528 8 \u5b57\u7bc0\uff0c\u9069\u5408\u9700\u8981\u96d9\u7cbe\u5ea6\u7684\u6d6e\u9ede\u6578\u3002<\/li>\n<\/ul>\n<p>\u9019\u4e9b\u985e\u578b\u9069\u5408\u7528\u65bc\u79d1\u5b78\u8a08\u7b97\u3001\u8ca1\u52d9\u5831\u8868\u7b49\u9700\u8981\u9ad8\u7cbe\u5ea6\u7684\u6578\u64da\u8655\u7406\u3002<\/p>\n<h2 id=\"4-%e5%ad%97%e7%ac%a6%e9%a1%9e%e5%9e%8b-njxnnEIOeP\">4. \u5b57\u7b26\u985e\u578b<\/h2>\n<p>\u5b57\u7b26\u985e\u578b\u7528\u65bc\u5b58\u5132\u6587\u672c\u6578\u64da\uff0cDB2 \u63d0\u4f9b\u4e86\u591a\u7a2e\u5b57\u7b26\u985e\u578b\uff0c\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><code>CHAR(n)<\/code>\uff1a\u56fa\u5b9a\u9577\u5ea6\u5b57\u7b26\uff0c\u6700\u591a\u53ef\u5b58\u5132 254 \u500b\u5b57\u7b26\u3002<\/li>\n<li><code>VARCHAR(n)<\/code>\uff1a\u53ef\u8b8a\u9577\u5ea6\u5b57\u7b26\uff0c\u6700\u591a\u53ef\u5b58\u5132 32,767 \u500b\u5b57\u7b26\u3002<\/li>\n<li><code>CLOB<\/code>\uff1a\u7528\u65bc\u5b58\u5132\u5927\u91cf\u6587\u672c\u6578\u64da\uff0c\u6700\u5927\u53ef\u9054 2GB\u3002<\/li>\n<\/ul>\n<p>\u5b57\u7b26\u985e\u578b\u9069\u5408\u7528\u65bc\u5b58\u5132\u7528\u6236\u540d\u3001\u5730\u5740\u3001\u63cf\u8ff0\u7b49\u6587\u672c\u4fe1\u606f\u3002<\/p>\n<h2 id=\"5-%e6%97%a5%e6%9c%9f%e5%92%8c%e6%99%82%e9%96%93%e9%a1%9e%e5%9e%8b-njxnnEIOeP\">5. \u65e5\u671f\u548c\u6642\u9593\u985e\u578b<\/h2>\n<p>DB2 \u63d0\u4f9b\u4e86\u591a\u7a2e\u65e5\u671f\u548c\u6642\u9593\u985e\u578b\uff0c\u4ee5\u4fbf\u65bc\u8655\u7406\u6642\u9593\u76f8\u95dc\u7684\u6578\u64da\uff1a<\/p>\n<ul>\n<li><code>DATE<\/code>\uff1a\u7528\u65bc\u5b58\u5132\u65e5\u671f\uff0c\u683c\u5f0f\u70ba YYYY-MM-DD\u3002<\/li>\n<li><code>TIME<\/code>\uff1a\u7528\u65bc\u5b58\u5132\u6642\u9593\uff0c\u683c\u5f0f\u70ba HH:MM:SS\u3002<\/li>\n<li><code>TIMESTAMP<\/code>\uff1a\u7528\u65bc\u5b58\u5132\u65e5\u671f\u548c\u6642\u9593\uff0c\u683c\u5f0f\u70ba YYYY-MM-DD HH:MM:SS\u3002<\/li>\n<\/ul>\n<p>\u9019\u4e9b\u985e\u578b\u9069\u5408\u7528\u65bc\u8a18\u9304\u4e8b\u4ef6\u6642\u9593\u3001\u4ea4\u6613\u6642\u9593\u7b49\u3002<\/p>\n<h2 id=\"6-%e5%85%b6%e4%bb%96%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b-njxnnEIOeP\">6. \u5176\u4ed6\u6578\u64da\u985e\u578b<\/h2>\n<p>\u9664\u4e86\u4e0a\u8ff0\u57fa\u672c\u6578\u64da\u985e\u578b\uff0cDB2 \u9084\u652f\u6301\u5176\u4ed6\u4e00\u4e9b\u7279\u6b8a\u6578\u64da\u985e\u578b\uff0c\u5982\uff1a<\/p>\n<ul>\n<li><code>XML<\/code>\uff1a\u7528\u65bc\u5b58\u5132 XML \u683c\u5f0f\u7684\u6578\u64da\u3002<\/li>\n<li><code>ROWID<\/code>\uff1a\u7528\u65bc\u552f\u4e00\u6a19\u8b58\u6578\u64da\u5eab\u4e2d\u7684\u884c\u3002<\/li>\n<\/ul>\n<p>\u9019\u4e9b\u7279\u6b8a\u6578\u64da\u985e\u578b\u5728\u8655\u7406\u7279\u5b9a\u9700\u6c42\u6642\u975e\u5e38\u6709\u7528\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-njxnnEIOeP\">\u7e3d\u7d50<\/h2>\n<p>\u4e86\u89e3 DB2 \u7684\u6578\u64da\u985e\u578b\u5c0d\u65bc\u8a2d\u8a08\u9ad8\u6548\u7684\u6578\u64da\u5eab\u7d50\u69cb\u81f3\u95dc\u91cd\u8981\u3002\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\u4e0d\u50c5\u80fd\u63d0\u9ad8\u6578\u64da\u5b58\u5132\u7684\u6548\u7387\uff0c\u9084\u80fd\u63d0\u5347\u67e5\u8a62\u6027\u80fd\u3002\u7121\u8ad6\u662f\u6574\u6578\u3001\u6d6e\u9ede\u6578\u3001\u5b57\u7b26\u9084\u662f\u65e5\u671f\u6642\u9593\u985e\u578b\uff0cDB2 \u90fd\u63d0\u4f9b\u4e86\u9748\u6d3b\u7684\u9078\u64c7\uff0c\u4ee5\u6eff\u8db3\u4e0d\u540c\u7684\u61c9\u7528\u9700\u6c42\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u4f01\u696d\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4e5f\u662f\u4e00\u500b\u91cd\u8981\u7684\u8003\u91cf\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22DB2\u6578\u64da\u985e\u578b\u7684\u57fa\u790e\u77e5\u8b58\uff0c\u4e86\u89e3\u5176\u7279\u6027\u8207\u61c9\u7528\uff0c\u52a9\u4f60\u5728\u6578\u64da\u7ba1\u7406\u4e2d\u6e38\u5203\u6709\u9918\uff01<\/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-161179","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/161179","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=161179"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/161179\/revisions"}],"predecessor-version":[{"id":161180,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/161179\/revisions\/161180"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=161179"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=161179"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=161179"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}