{"id":173407,"date":"2024-11-07T17:46:18","date_gmt":"2024-11-07T09:46:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/173407\/"},"modified":"2024-11-07T17:46:19","modified_gmt":"2024-11-07T09:46:19","slug":"%e5%a6%82%e4%bd%95%e6%9b%b4%e6%94%b9db2%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8%e7%9a%84%e4%b8%bb%e9%8d%b5%e5%90%8d%e7%a8%b1%ef%bc%9f-db2%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8%e4%bf%ae%e6%94%b9%e4%b8%bb","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/173407\/","title":{"rendered":"\u5982\u4f55\u66f4\u6539DB2\u6578\u64da\u5eab\u8868\u7684\u4e3b\u9375\u540d\u7a31\uff1f (db2\u6578\u64da\u5eab\u8868\u4fee\u6539\u4e3b\u9375\u540d\u7a31)"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e6%9b%b4%e6%94%b9db2%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8%e7%9a%84%e4%b8%bb%e9%8d%b5%e5%90%8d%e7%a8%b1%ef%bc%9f-WCFyLjOdeZ\">\u5982\u4f55\u66f4\u6539DB2\u6578\u64da\u5eab\u8868\u7684\u4e3b\u9375\u540d\u7a31\uff1f<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u4e3b\u9375\u662f\u7528\u4f86\u552f\u4e00\u6a19\u8b58\u8868\u4e2d\u6bcf\u4e00\u884c\u6578\u64da\u7684\u91cd\u8981\u5143\u7d20\u3002\u7576\u9700\u8981\u66f4\u6539DB2\u6578\u64da\u5eab\u8868\u7684\u4e3b\u9375\u540d\u7a31\u6642\uff0c\u9019\u901a\u5e38\u662f\u56e0\u70ba\u696d\u52d9\u9700\u6c42\u7684\u8b8a\u66f4\u6216\u6578\u64da\u6a21\u578b\u7684\u8abf\u6574\u3002\u672c\u6587\u5c07\u8a73\u7d30\u4ecb\u7d39\u5982\u4f55\u5728DB2\u4e2d\u4fee\u6539\u4e3b\u9375\u540d\u7a31\u7684\u6b65\u9a5f\u53ca\u6ce8\u610f\u4e8b\u9805\u3002<\/p>\n<h2 id=\"db2%e4%b8%bb%e9%8d%b5%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-WCFyLjOdeZ\">DB2\u4e3b\u9375\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u5728DB2\u6578\u64da\u5eab\u4e2d\uff0c\u4e3b\u9375\u662f\u4e00\u500b\u6216\u591a\u500b\u5217\u7684\u7d44\u5408\uff0c\u9019\u4e9b\u5217\u7684\u503c\u5fc5\u9808\u662f\u552f\u4e00\u7684\uff0c\u4e26\u4e14\u4e0d\u80fd\u70ba\u7a7a\u3002\u4e3b\u9375\u7684\u4e3b\u8981\u529f\u80fd\u662f\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\u548c\u552f\u4e00\u6027\u3002\u7576\u9700\u8981\u66f4\u6539\u4e3b\u9375\u540d\u7a31\u6642\uff0c\u9996\u5148\u9700\u8981\u4e86\u89e3\u8a72\u4e3b\u9375\u7684\u7d50\u69cb\u53ca\u5176\u5728\u6578\u64da\u5eab\u4e2d\u7684\u4f5c\u7528\u3002<\/p>\n<h2 id=\"%e6%9b%b4%e6%94%b9%e4%b8%bb%e9%8d%b5%e5%90%8d%e7%a8%b1%e7%9a%84%e6%ad%a5%e9%a9%9f-WCFyLjOdeZ\">\u66f4\u6539\u4e3b\u9375\u540d\u7a31\u7684\u6b65\u9a5f<\/h2>\n<p>\u5728DB2\u4e2d\uff0c\u76f4\u63a5\u66f4\u6539\u4e3b\u9375\u7684\u540d\u7a31\u4e26\u4e0d\u662f\u4e00\u500b\u7c21\u55ae\u7684\u64cd\u4f5c\u3002\u901a\u5e38\u9700\u8981\u901a\u904e\u4ee5\u4e0b\u6b65\u9a5f\u4f86\u5be6\u73fe\uff1a<\/p>\n<h3 id=\"1-%e7%a2%ba%e8%aa%8d%e7%95%b6%e5%89%8d%e4%b8%bb%e9%8d%b5%e7%9a%84%e5%90%8d%e7%a8%b1%e5%92%8c%e7%b5%90%e6%a7%8b-WCFyLjOdeZ\">1. \u78ba\u8a8d\u7576\u524d\u4e3b\u9375\u7684\u540d\u7a31\u548c\u7d50\u69cb<\/h3>\n<pre><code>SELECT * FROM SYSIBM.SYSCONSTRAINTS WHERE TYPE = 'P' AND TABNAME = '\u4f60\u7684\u8868\u540d';<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u8a9e\u53e5\u5c07\u8fd4\u56de\u6307\u5b9a\u8868\u7684\u4e3b\u9375\u7d04\u675f\u4fe1\u606f\uff0c\u5305\u62ec\u4e3b\u9375\u7684\u540d\u7a31\u548c\u6240\u5c6c\u5217\u3002<\/p>\n<h3 id=\"2-%e5%88%aa%e9%99%a4%e7%8f%be%e6%9c%89%e7%9a%84%e4%b8%bb%e9%8d%b5%e7%b4%84%e6%9d%9f-WCFyLjOdeZ\">2. \u522a\u9664\u73fe\u6709\u7684\u4e3b\u9375\u7d04\u675f<\/h3>\n<p>\u5728\u66f4\u6539\u4e3b\u9375\u540d\u7a31\u4e4b\u524d\uff0c\u5fc5\u9808\u5148\u522a\u9664\u73fe\u6709\u7684\u4e3b\u9375\u7d04\u675f\u3002\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\u4f86\u522a\u9664\u4e3b\u9375\uff1a<\/p>\n<pre><code>ALTER TABLE \u4f60\u7684\u8868\u540d DROP PRIMARY KEY;<\/code><\/pre>\n<h3 id=\"3-%e6%b7%bb%e5%8a%a0%e6%96%b0%e7%9a%84%e4%b8%bb%e9%8d%b5%e7%b4%84%e6%9d%9f-WCFyLjOdeZ\">3. \u6dfb\u52a0\u65b0\u7684\u4e3b\u9375\u7d04\u675f<\/h3>\n<p>\u522a\u9664\u820a\u7684\u4e3b\u9375\u5f8c\uff0c\u53ef\u4ee5\u4f7f\u7528\u65b0\u7684\u540d\u7a31\u4f86\u6dfb\u52a0\u4e3b\u9375\u7d04\u675f\u3002\u4ee5\u4e0b\u662f\u6dfb\u52a0\u4e3b\u9375\u7684\u8a9e\u6cd5\uff1a<\/p>\n<pre><code>ALTER TABLE \u4f60\u7684\u8868\u540d ADD CONSTRAINT \u65b0\u7684\u4e3b\u9375\u540d\u7a31 PRIMARY KEY (\u52171, \u52172);<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c`\u52171`\u548c`\u52172`\u662f\u7d44\u6210\u65b0\u4e3b\u9375\u7684\u5217\u540d\u3002<\/p>\n<h3 id=\"4-%e9%a9%97%e8%ad%89%e6%9b%b4%e6%94%b9-WCFyLjOdeZ\">4. \u9a57\u8b49\u66f4\u6539<\/h3>\n<p>\u5b8c\u6210\u4e0a\u8ff0\u6b65\u9a5f\u5f8c\uff0c\u53ef\u4ee5\u518d\u6b21\u67e5\u8a62\u4e3b\u9375\u7d04\u675f\u4f86\u78ba\u8a8d\u66f4\u6539\u662f\u5426\u6210\u529f\uff1a<\/p>\n<pre><code>SELECT * FROM SYSIBM.SYSCONSTRAINTS WHERE TYPE = 'P' AND TABNAME = '\u4f60\u7684\u8868\u540d';<\/code><\/pre>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-WCFyLjOdeZ\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li>\u5728\u522a\u9664\u4e3b\u9375\u7d04\u675f\u4e4b\u524d\uff0c\u78ba\u4fdd\u6c92\u6709\u5176\u4ed6\u4f9d\u8cf4\u65bc\u8a72\u4e3b\u9375\u7684\u5916\u9375\u7d04\u675f\u3002<\/li>\n<li>\u5728\u9032\u884c\u4efb\u4f55\u7d50\u69cb\u66f4\u6539\u4e4b\u524d\uff0c\u5efa\u8b70\u5099\u4efd\u6578\u64da\u5eab\uff0c\u4ee5\u9632\u6b62\u6578\u64da\u4e1f\u5931\u3002<\/li>\n<li>\u66f4\u6539\u4e3b\u9375\u540d\u7a31\u53ef\u80fd\u6703\u5f71\u97ff\u5230\u61c9\u7528\u7a0b\u5e8f\u7684\u908f\u8f2f\uff0c\u8acb\u78ba\u4fdd\u5728\u61c9\u7528\u7a0b\u5e8f\u4e2d\u9032\u884c\u76f8\u61c9\u7684\u66f4\u65b0\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-WCFyLjOdeZ\">\u7d50\u8ad6<\/h2>\n<p>\u66f4\u6539DB2\u6578\u64da\u5eab\u8868\u7684\u4e3b\u9375\u540d\u7a31\u662f\u4e00\u500b\u9700\u8981\u8b39\u614e\u8655\u7406\u7684\u904e\u7a0b\u3002\u901a\u904e\u4e0a\u8ff0\u6b65\u9a5f\uff0c\u60a8\u53ef\u4ee5\u6709\u6548\u5730\u5b8c\u6210\u9019\u4e00\u64cd\u4f5c\uff0c\u4e26\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\u548c\u4e00\u81f4\u6027\u3002\u5728\u9032\u884c\u6578\u64da\u5eab\u7ba1\u7406\u6642\uff0c\u4e86\u89e3\u5982\u4f55\u6b63\u78ba\u5730\u4fee\u6539\u4e3b\u9375\u662f\u975e\u5e38\u91cd\u8981\u7684\uff0c\u9019\u4e0d\u50c5\u80fd\u63d0\u9ad8\u6578\u64da\u7684\u53ef\u7528\u6027\uff0c\u9084\u80fd\u589e\u5f37\u7cfb\u7d71\u7684\u9748\u6d3b\u6027\u3002<\/p>\n<p>\u5982\u679c\u60a8\u9700\u8981\u66f4\u591a\u6709\u95dc\u6578\u64da\u5eab\u7ba1\u7406\u6216\u5176\u4ed6\u6280\u8853\u652f\u6301\u7684\u4fe1\u606f\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9 <a href=\"https:\/\/server.hk\">Server.HK<\/a>\uff0c\u4e86\u89e3\u6211\u5011\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u548c\u670d\u52d9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5728DB2\u6578\u64da\u5eab\u4e2d\u66f4\u6539\u8868\u7684\u4e3b\u9375\u540d\u7a31\uff0c\u7c21\u55ae\u6b65\u9a5f\u52a9\u4f60\u8f15\u9b06\u5b8c\u6210\u4fee\u6539\u3002<\/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-173407","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/173407","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=173407"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/173407\/revisions"}],"predecessor-version":[{"id":173408,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/173407\/revisions\/173408"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=173407"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=173407"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=173407"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}