{"id":60903,"date":"2024-10-13T06:47:14","date_gmt":"2024-10-12T22:47:14","guid":{"rendered":"https:\/\/server.hk\/cnblog\/60903\/"},"modified":"2024-10-13T06:47:14","modified_gmt":"2024-10-12T22:47:14","slug":"db2%e7%b4%a2%e5%bc%95%e5%89%b5%e5%bb%ba%e5%8e%9f%e5%89%87","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/60903\/","title":{"rendered":"DB2\u7d22\u5f15\u5275\u5efa\u539f\u5247"},"content":{"rendered":"<h1 id=\"db2%e7%b4%a2%e5%bc%95%e5%89%b5%e5%bb%ba%e5%8e%9f%e5%89%87-crDZzFBXUZ\">DB2\u7d22\u5f15\u5275\u5efa\u539f\u5247<\/h1>\n<p>\u5728\u8cc7\u6599\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u7d22\u5f15\u662f\u4e00\u7a2e\u91cd\u8981\u7684\u8cc7\u6599\u7d50\u69cb\uff0c\u80fd\u5920\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002IBM\u7684DB2\u8cc7\u6599\u5eab\u7cfb\u7d71\u540c\u6a23\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u7d22\u5f15\u529f\u80fd\u3002\u672c\u6587\u5c07\u63a2\u8a0eDB2\u7d22\u5f15\u7684\u5275\u5efa\u539f\u5247\uff0c\u5e6b\u52a9\u4f7f\u7528\u8005\u66f4\u6709\u6548\u5730\u8a2d\u8a08\u548c\u7ba1\u7406\u8cc7\u6599\u5eab\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afdb2%e7%b4%a2%e5%bc%95%ef%bc%9f-crDZzFBXUZ\">\u4ec0\u9ebc\u662fDB2\u7d22\u5f15\uff1f<\/h2>\n<p>\u7d22\u5f15\u662f\u4e00\u7a2e\u8cc7\u6599\u7d50\u69cb\uff0c\u80fd\u5920\u52a0\u901f\u8cc7\u6599\u6aa2\u7d22\u7684\u904e\u7a0b\u3002DB2\u7d22\u5f15\u985e\u4f3c\u65bc\u66f8\u7c4d\u7684\u76ee\u9304\uff0c\u80fd\u5920\u5e6b\u52a9\u4f7f\u7528\u8005\u5feb\u901f\u627e\u5230\u6240\u9700\u7684\u8cc7\u6599\u3002DB2\u652f\u6301\u591a\u7a2e\u7d22\u5f15\u985e\u578b\uff0c\u5305\u62ec\u552f\u4e00\u7d22\u5f15\u3001\u975e\u552f\u4e00\u7d22\u5f15\u3001\u805a\u96c6\u7d22\u5f15\u548c\u975e\u805a\u96c6\u7d22\u5f15\u7b49\u3002<\/p>\n<h2 id=\"%e7%b4%a2%e5%bc%95%e5%89%b5%e5%bb%ba%e7%9a%84%e5%9f%ba%e6%9c%ac%e5%8e%9f%e5%89%87-crDZzFBXUZ\">\u7d22\u5f15\u5275\u5efa\u7684\u57fa\u672c\u539f\u5247<\/h2>\n<h3 id=\"1-%e7%a2%ba%e5%ae%9a%e7%b4%a2%e5%bc%95%e7%9a%84%e5%bf%85%e8%a6%81%e6%80%a7-crDZzFBXUZ\">1. \u78ba\u5b9a\u7d22\u5f15\u7684\u5fc5\u8981\u6027<\/h3>\n<p>\u5728\u5275\u5efa\u7d22\u5f15\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u8a55\u4f30\u5176\u5fc5\u8981\u6027\u3002\u904e\u591a\u7684\u7d22\u5f15\u6703\u589e\u52a0\u8cc7\u6599\u5eab\u7684\u7dad\u8b77\u6210\u672c\uff0c\u56e0\u70ba\u6bcf\u6b21\u8cc7\u6599\u66f4\u65b0\u6642\uff0c\u7d22\u5f15\u4e5f\u9700\u8981\u96a8\u4e4b\u66f4\u65b0\u3002\u56e0\u6b64\uff0c\u61c9\u8a72\u6839\u64da\u67e5\u8a62\u7684\u983b\u7387\u548c\u6027\u80fd\u9700\u6c42\u4f86\u6c7a\u5b9a\u662f\u5426\u5275\u5efa\u7d22\u5f15\u3002<\/p>\n<h3 id=\"2-%e9%81%b8%e6%93%87%e5%90%88%e9%81%a9%e7%9a%84%e6%ac%84%e4%bd%8d-crDZzFBXUZ\">2. \u9078\u64c7\u5408\u9069\u7684\u6b04\u4f4d<\/h3>\n<p>\u9078\u64c7\u7d22\u5f15\u7684\u6b04\u4f4d\u662f\u5275\u5efa\u7d22\u5f15\u7684\u95dc\u9375\u3002\u901a\u5e38\uff0c\u61c9\u8a72\u9078\u64c7\u7d93\u5e38\u7528\u65bc\u67e5\u8a62\u689d\u4ef6\u7684\u6b04\u4f4d\uff0c\u4f8b\u5982 WHERE \u5b50\u53e5\u4e2d\u7684\u6b04\u4f4d\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u7bc4\u4f8b\uff1a<\/p>\n<pre><code>CREATE INDEX idx_customer_name ON customers (name);<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u70ba customers \u8868\u4e2d\u7684 name \u6b04\u4f4d\u5275\u5efa\u4e86\u4e00\u500b\u7d22\u5f15\uff0c\u9019\u6a23\u53ef\u4ee5\u52a0\u901f\u57fa\u65bc\u5ba2\u6236\u540d\u7a31\u7684\u67e5\u8a62\u3002<\/p>\n<h3 id=\"3-%e8%80%83%e6%85%ae%e7%b4%a2%e5%bc%95%e7%9a%84%e9%a1%9e%e5%9e%8b-crDZzFBXUZ\">3. \u8003\u616e\u7d22\u5f15\u7684\u985e\u578b<\/h3>\n<p>DB2\u63d0\u4f9b\u591a\u7a2e\u7d22\u5f15\u985e\u578b\uff0c\u6bcf\u7a2e\u7d22\u5f15\u90fd\u6709\u5176\u7279\u5b9a\u7684\u7528\u9014\u3002\u4f8b\u5982\uff1a<\/p>\n<ul>\n<li><strong>\u552f\u4e00\u7d22\u5f15\uff1a<\/strong>\u78ba\u4fdd\u6b04\u4f4d\u4e2d\u7684\u503c\u662f\u552f\u4e00\u7684\u3002<\/li>\n<li><strong>\u805a\u96c6\u7d22\u5f15\uff1a<\/strong>\u5c07\u8cc7\u6599\u6309\u7d22\u5f15\u9806\u5e8f\u5b58\u5132\uff0c\u9069\u5408\u7bc4\u570d\u67e5\u8a62\u3002<\/li>\n<li><strong>\u975e\u805a\u96c6\u7d22\u5f15\uff1a<\/strong>\u7d22\u5f15\u548c\u8cc7\u6599\u5b58\u5132\u5728\u4e0d\u540c\u7684\u4f4d\u7f6e\uff0c\u9069\u5408\u591a\u7a2e\u67e5\u8a62\u3002<\/li>\n<\/ul>\n<p>\u6839\u64da\u67e5\u8a62\u7684\u7279\u6027\u9078\u64c7\u5408\u9069\u7684\u7d22\u5f15\u985e\u578b\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002<\/p>\n<h3 id=\"4-%e6%8e%a7%e5%88%b6%e7%b4%a2%e5%bc%95%e7%9a%84%e6%95%b8%e9%87%8f-crDZzFBXUZ\">4. \u63a7\u5236\u7d22\u5f15\u7684\u6578\u91cf<\/h3>\n<p>\u96d6\u7136\u7d22\u5f15\u80fd\u5920\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u4f46\u904e\u591a\u7684\u7d22\u5f15\u6703\u5f71\u97ff\u8cc7\u6599\u7684\u63d2\u5165\u3001\u66f4\u65b0\u548c\u522a\u9664\u64cd\u4f5c\u7684\u6027\u80fd\u3002\u56e0\u6b64\uff0c\u61c9\u8a72\u63a7\u5236\u7d22\u5f15\u7684\u6578\u91cf\uff0c\u4e26\u5b9a\u671f\u8a55\u4f30\u5176\u6548\u80fd\u3002<\/p>\n<h3 id=\"5-%e5%ae%9a%e6%9c%9f%e7%b6%ad%e8%ad%b7%e7%b4%a2%e5%bc%95-crDZzFBXUZ\">5. \u5b9a\u671f\u7dad\u8b77\u7d22\u5f15<\/h3>\n<p>\u96a8\u8457\u8cc7\u6599\u7684\u589e\u9577\uff0c\u7d22\u5f15\u53ef\u80fd\u6703\u8b8a\u5f97\u4e0d\u518d\u9ad8\u6548\u3002\u5b9a\u671f\u9032\u884c\u7d22\u5f15\u91cd\u5efa\u548c\u91cd\u7d44\uff0c\u53ef\u4ee5\u4fdd\u6301\u7d22\u5f15\u7684\u6027\u80fd\u3002DB2\u63d0\u4f9b\u4e86\u591a\u7a2e\u5de5\u5177\u4f86\u5e6b\u52a9\u7ba1\u7406\u548c\u7dad\u8b77\u7d22\u5f15\u3002<\/p>\n<pre><code>REBUILD INDEX idx_customer_name;<\/code><\/pre>\n<p>\u9019\u689d\u547d\u4ee4\u5c07\u91cd\u5efa\u540d\u70ba idx_customer_name \u7684\u7d22\u5f15\uff0c\u4ee5\u63d0\u9ad8\u5176\u6027\u80fd\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-crDZzFBXUZ\">\u7d50\u8ad6<\/h2>\n<p>\u5728DB2\u4e2d\uff0c\u7d22\u5f15\u7684\u5275\u5efa\u548c\u7ba1\u7406\u662f\u63d0\u9ad8\u8cc7\u6599\u5eab\u6027\u80fd\u7684\u91cd\u8981\u624b\u6bb5\u3002\u901a\u904e\u9075\u5faa\u4e0a\u8ff0\u539f\u5247\uff0c\u4f7f\u7528\u8005\u53ef\u4ee5\u6709\u6548\u5730\u8a2d\u8a08\u548c\u7dad\u8b77\u7d22\u5f15\uff0c\u5f9e\u800c\u63d0\u5347\u67e5\u8a62\u6548\u7387\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u8cc7\u6599\u6aa2\u7d22\u7684\u61c9\u7528\uff0c\u5408\u7406\u7684\u7d22\u5f15\u7b56\u7565\u662f\u4e0d\u53ef\u6216\u7f3a\u7684\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u95dc\u65bc\u8cc7\u6599\u5eab\u7ba1\u7406\u548c\u6027\u80fd\u512a\u5316\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9 <a href=\"https:\/\/server.hk\">Server.HK<\/a>\uff0c\u63a2\u7d22\u6211\u5011\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u53ca\u5176\u4ed6\u670d\u52d9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3DB2\u7d22\u5f15\u5275\u5efa\u539f\u5247\uff0c\u63d0\u5347\u67e5\u8a62\u6027\u80fd\uff0c\u512a\u5316\u6578\u64da\u5eab\u7ba1\u7406\uff0c\u78ba\u4fdd\u9ad8\u6548\u6578\u64da\u6aa2\u7d22\u8207\u5b58\u5132\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-60903","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60903","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=60903"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60903\/revisions"}],"predecessor-version":[{"id":60904,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60903\/revisions\/60904"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=60903"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=60903"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=60903"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}