{"id":60499,"date":"2024-10-13T03:22:15","date_gmt":"2024-10-12T19:22:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/60499\/"},"modified":"2024-10-13T03:22:15","modified_gmt":"2024-10-12T19:22:15","slug":"db2%e8%a4%87%e9%9b%9c%e7%9a%84%e6%87%89%e7%94%a8%e7%92%b0%e5%a2%83%e4%b8%ad%e7%9a%84%e6%80%a7%e8%83%bd%e5%84%aa%e5%8c%96","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/60499\/","title":{"rendered":"DB2\u8907\u96dc\u7684\u61c9\u7528\u74b0\u5883\u4e2d\u7684\u6027\u80fd\u512a\u5316"},"content":{"rendered":"<h1 id=\"db2%e8%a4%87%e9%9b%9c%e7%9a%84%e6%87%89%e7%94%a8%e7%92%b0%e5%a2%83%e4%b8%ad%e7%9a%84%e6%80%a7%e8%83%bd%e5%84%aa%e5%8c%96-rTYEgQKxuR\">DB2\u8907\u96dc\u7684\u61c9\u7528\u74b0\u5883\u4e2d\u7684\u6027\u80fd\u512a\u5316<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0cIBM 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id=\"2-%e6%80%a7%e8%83%bd%e5%84%aa%e5%8c%96%e7%9a%84%e7%ad%96%e7%95%a5-rTYEgQKxuR\">2. \u6027\u80fd\u512a\u5316\u7684\u7b56\u7565<\/h2>\n<h3 id=\"2-1-%e6%9f%a5%e8%a9%a2%e5%84%aa%e5%8c%96-rTYEgQKxuR\">2.1 \u67e5\u8a62\u512a\u5316<\/h3>\n<p>\u67e5\u8a62\u6027\u80fd\u662f\u5f71\u97ffDB2\u6574\u9ad4\u6027\u80fd\u7684\u95dc\u9375\u56e0\u7d20\u4e4b\u4e00\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u67e5\u8a62\u512a\u5316\u7684\u5efa\u8b70\uff1a<\/p>\n<ul>\n<li><strong>\u4f7f\u7528\u7d22\u5f15\uff1a<\/strong>\u70ba\u5e38\u7528\u7684\u67e5\u8a62\u5b57\u6bb5\u5275\u5efa\u7d22\u5f15\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u901f\u5ea6\u3002\u4f8b\u5982\uff0c\u5c0d\u65bc\u4e00\u500b\u7d93\u5e38\u67e5\u8a62\u7684\u5ba2\u6236ID\u5b57\u6bb5\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u8a9e\u53e5\u5275\u5efa\u7d22\u5f15\uff1a<\/li>\n<pre><code>CREATE INDEX idx_customer_id ON customers(customer_id);<\/code><\/pre>\n<li><strong>\u907f\u514dSELECT 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id=\"%e7%b8%bd%e7%b5%90-rTYEgQKxuR\">\u7e3d\u7d50<\/h2>\n<p>\u5728\u8907\u96dc\u7684\u61c9\u7528\u74b0\u5883\u4e2d\uff0cDB2\u7684\u6027\u80fd\u512a\u5316\u9700\u8981\u5f9e\u67e5\u8a62\u512a\u5316\u3001\u6578\u64da\u5eab\u8a2d\u8a08\u548c\u4e8b\u52d9\u7ba1\u7406\u7b49\u591a\u65b9\u9762\u5165\u624b\u3002\u901a\u904e\u5408\u7406\u7684\u8a2d\u8a08\u548c\u6301\u7e8c\u7684\u76e3\u63a7\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8DB2\u7684\u6027\u80fd\uff0c\u6eff\u8db3\u696d\u52d9\u9700\u6c42\u3002\u82e5\u60a8\u9700\u8981\u9032\u4e00\u6b65\u4e86\u89e3\u5982\u4f55\u5728\u9999\u6e2f\u74b0\u5883\u4e2d\u90e8\u7f72\u9ad8\u6548\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684<a 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