{"id":5625,"date":"2024-11-14T10:20:49","date_gmt":"2024-11-14T02:20:49","guid":{"rendered":"https:\/\/fwq.ai\/blog\/5625\/"},"modified":"2024-11-14T10:20:49","modified_gmt":"2024-11-14T02:20:49","slug":"sql%e7%b4%a2%e5%bc%95%e6%80%8e%e4%b9%88%e8%ae%be%e7%bd%ae","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/5625\/","title":{"rendered":"sql\u7d22\u5f15\u600e\u4e48\u8bbe\u7f6e"},"content":{"rendered":"<blockquote><p>\n  sql \u7d22\u5f15\u901a\u8fc7\u6307\u5411\u8868\u4e2d\u6570\u636e\u7684\u6307\u9488\u52a0\u901f\u6570\u636e\u68c0\u7d22\uff0c\u7279\u522b\u9002\u7528\u4e8e\u9700\u8981\u6839\u636e\u7279\u5b9a\u5217\u8fc7\u6ee4\u6216\u6392\u5e8f\u5927\u6570\u636e\u96c6\u7684\u60c5\u51b5\u3002\u521b\u5efa\u7d22\u5f15\u7684\u8bed\u6cd5\u4e3a\uff1acreate index [index_name] on [table_name] ([column_name])\u3002\u6709\u7c07\u96c6\u7d22\u5f15\u3001\u975e\u7c07\u96c6\u7d22\u5f15\u3001\u552f\u4e00\u7d22\u5f15\u548c\u5168\u6587\u7d22\u5f15\u7b49\u4e0d\u540c\u7c7b\u578b\u7684\u7d22\u5f15\u3002\u6700\u4f73\u5b9e\u8df5\u5305\u62ec\uff1a\u53ea\u4e3a\u5e38\u7528\u4e8e\u8fc7\u6ee4\u6216\u6392\u5e8f\u7684\u5217\u521b\u5efa\u7d22\u5f15\u3001\u907f\u514d\u4e3a\u5c0f\u8868\u521b\u5efa\u7d22\u5f15\u3001\u8003\u8651\u6570\u636e\u5206\u5e03\u4ee5\u53ca\u5b9a\u671f\u76d1\u63a7\u7d22\u5f15\u4f7f\u7528\u60c5\u51b5\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202405\/30\/2024053019154029293.jpg\" class=\"aligncenter\" title=\"sql\u7d22\u5f15\u600e\u4e48\u8bbe\u7f6e\u63d2\u56fe\" alt=\"sql\u7d22\u5f15\u600e\u4e48\u8bbe\u7f6e\u63d2\u56fe\" \/><\/p>\n<p><strong>SQL \u7d22\u5f15\u8bbe\u7f6e\u6307\u5357<\/strong><\/p>\n<p>SQL \u7d22\u5f15\u662f\u6570\u636e\u5e93\u4e2d\u7684\u4e00\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u5b83\u53ef\u4ee5\u663e\u7740\u63d0\u9ad8\u6570\u636e\u68c0\u7d22\u901f\u5ea6\uff0c\u7279\u522b\u662f\u5f53\u67e5\u8be2\u6d89\u53ca\u5927\u91cf\u6570\u636e\u65f6\u3002<\/p>\n<p><strong>\u4e3a\u4ec0\u4e48\u8981\u8bbe\u7f6e\u7d22\u5f15\uff1f<\/strong><\/p>\n<p>\u7d22\u5f15\u901a\u8fc7\u521b\u5efa\u6307\u5411\u8868\u4e2d\u6570\u636e\u7684\u6307\u9488\u6765\u5de5\u4f5c\u3002\u5f53\u6267\u884c\u67e5\u8be2\u65f6\uff0c\u6570\u636e\u5e93\u53ef\u4ee5\u4f7f\u7528\u8fd9\u4e9b\u6307\u9488\u5feb\u901f\u627e\u5230\u6240\u9700\u7684\u6570\u636e\uff0c\u800c\u65e0\u9700\u9010\u884c\u626b\u63cf\u8868\u3002\u8fd9\u5728\u4ee5\u4e0b\u60c5\u51b5\u4e0b\u7279\u522b\u6709\u7528\uff1a<\/p>\n<ul>\n<li>\u7ecf\u5e38\u6839\u636e\u7279\u5b9a\u5217\uff08\u4f8b\u5982\u4e3b\u952e\u6216\u552f\u4e00\u952e\uff09\u8fc7\u6ee4\u6216\u6392\u5e8f\u6570\u636e<\/li>\n<li>\u8868\u4e2d\u6570\u636e\u91cf\u5f88\u5927<\/li>\n<\/ul>\n<p><strong>\u5982\u4f55\u8bbe\u7f6e\u7d22\u5f15\uff1f<\/strong><\/p>\n<p>\u5728 SQL Server \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\u521b\u5efa\u7d22\u5f15\uff1a<\/p>\n<pre>CREATE INDEX [index_name] ON [table_name] ([column_name])<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4f8b\u5982\uff0c\u8981\u4e3a &#8220;Customers&#8221; \u8868\u7684 &#8220;Customer_ID&#8221; \u5217\u521b\u5efa\u7d22\u5f15\uff0c\u53ef\u4ee5\u8fd0\u884c\u4ee5\u4e0b\u67e5\u8be2\uff1a<\/p>\n<pre>CREATE INDEX Customer_ID_Index ON Customers (Customer_ID)<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u7d22\u5f15\u7c7b\u578b\u7684\u9009\u62e9<\/strong><\/p>\n<p>\u6709\u51e0\u79cd\u4e0d\u540c\u7c7b\u578b\u7684\u7d22\u5f15\u53ef\u7528\uff0c\u5305\u62ec\uff1a<\/p>\n<ul>\n<li> <strong>\u7c07\u96c6\u7d22\u5f15\uff1a<\/strong>\u5c06\u8868\u4e2d\u7684\u6570\u636e\u91cd\u65b0\uff0c\u4ee5\u4fbf\u6839\u636e\u7d22\u5f15\u952e\u5bf9\u5176\u8fdb\u884c\u6392\u5e8f\u3002\u8fd9\u5c06\u4f18\u5316\u6570\u636e\u68c0\u7d22\uff0c\u4f46\u4f1a\u589e\u52a0\u6570\u636e\u63d2\u5165\u548c\u66f4\u65b0\u7684\u6210\u672c\u3002<\/li>\n<li> <strong>\u975e\u7c07\u96c6\u7d22\u5f15\uff1a<\/strong>\u521b\u5efa\u4e00\u4e2a\u6307\u5411\u8868\u6570\u636e\u7684\u72ec\u7acb\u7ed3\u6784\u3002\u8fd9\u901a\u5e38\u6bd4\u7c07\u96c6\u7d22\u5f15\u6027\u80fd\u8f83\u4f4e\uff0c\u4f46\u4e0d\u4f1a\u5f71\u54cd\u6570\u636e\u4fee\u6539\u64cd\u4f5c\u3002<\/li>\n<li> <strong>\u552f\u4e00\u7d22\u5f15\uff1a<\/strong>\u786e\u4fdd\u7d22\u5f15\u952e\u4e2d\u7684\u503c\u662f\u552f\u4e00\u7684\uff0c\u8fd9\u6709\u52a9\u4e8e\u7ef4\u62a4\u6570\u636e\u5b8c\u6574\u6027\u3002<\/li>\n<li> <strong>\u5168\u6587\u7d22\u5f15\uff1a<\/strong>\u7528\u4e8e\u5bf9\u6587\u672c\u6570\u636e\u8fdb\u884c\u5feb\u901f\u641c\u7d22\u3002<\/li>\n<\/ul>\n<p><strong>\u6700\u4f73\u5b9e\u8df5<\/strong><\/p>\n<p>\u5728\u8bbe\u7f6e\u7d22\u5f15\u65f6\uff0c\u5e94\u9075\u5faa\u4ee5\u4e0b\u6700\u4f73\u5b9e\u8df5\uff1a<\/p>\n<ul>\n<li>\u53ea\u4e3a\u7ecf\u5e38\u4f7f\u7528\u8fc7\u6ee4\u6216\u6392\u5e8f\u7684\u5217\u521b\u5efa\u7d22\u5f15\u3002<\/li>\n<li>\u907f\u514d\u4e3a\u5c0f\u8868\u521b\u5efa\u7d22\u5f15\uff0c\u56e0\u4e3a\u5f00\u9500\u53ef\u80fd\u8d85\u8fc7\u6536\u76ca\u3002<\/li>\n<li>\u8003\u8651\u8868\u4e2d\u7684\u6570\u636e\u5206\u5e03\u3002\u4f8b\u5982\uff0c\u5982\u679c\u7d22\u5f15\u952e\u7684\u503c\u5206\u5e03\u4e0d\u5747\u5300\uff0c\u5219\u7d22\u5f15\u53ef\u80fd\u4e0d\u592a\u6709\u6548\u3002<\/li>\n<li>\u5b9a\u671f\u76d1\u63a7\u7d22\u5f15\u7684\u4f7f\u7528\u60c5\u51b5\u5e76\u5220\u9664\u4e0d\u7ecf\u5e38\u4f7f\u7528\u7684\u7d22\u5f15\uff0c\u56e0\u4e3a\u5b83\u4eec\u53ef\u80fd\u4f1a\u964d\u4f4e\u67e5\u8be2\u6027\u80fd\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fsql\u7d22\u5f15\u600e\u4e48\u8bbe\u7f6e\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>sql \u7d22\u5f15\u901a\u8fc7\u6307\u5411\u8868\u4e2d\u6570\u636e\u7684\u6307\u9488\u52a0\u901f\u6570\u636e\u68c0\u7d22\uff0c\u7279\u522b\u9002\u7528\u4e8e\u9700\u8981\u6839\u636e\u7279\u5b9a\u5217\u8fc7\u6ee4\u6216\u6392\u5e8f\u5927\u6570\u636e\u96c6\u7684\u60c5\u51b5\u3002\u521b\u5efa\u7d22\u5f15\u7684\u8bed\u6cd5\u4e3a\uff1acreate index [index_name] on [table_name] ([column_name])\u3002\u6709\u7c07\u96c6\u7d22\u5f15\u3001\u975e\u7c07\u96c6\u7d22\u5f15\u3001\u552f\u4e00\u7d22\u5f15\u548c\u5168\u6587\u7d22\u5f15\u7b49\u4e0d\u540c\u7c7b\u578b\u7684\u7d22\u5f15\u3002\u6700\u4f73\u5b9e\u8df5\u5305\u62ec\uff1a\u53ea\u4e3a\u5e38\u7528\u4e8e\u8fc7\u6ee4\u6216\u6392\u5e8f\u7684\u5217\u521b\u5efa\u7d22\u5f15\u3001\u907f\u514d\u4e3a\u5c0f\u8868\u521b\u5efa\u7d22\u5f15\u3001\u8003\u8651\u6570\u636e\u5206\u5e03\u4ee5\u53ca\u5b9a\u671f\u76d1\u63a7\u7d22\u5f15\u4f7f\u7528\u60c5\u51b5\u3002 SQL \u7d22\u5f15\u8bbe\u7f6e\u6307\u5357 SQL \u7d22\u5f15\u662f\u6570\u636e\u5e93\u4e2d\u7684\u4e00\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u5b83\u53ef\u4ee5\u663e\u7740\u63d0\u9ad8\u6570\u636e\u68c0\u7d22\u901f\u5ea6\uff0c\u7279\u522b\u662f\u5f53\u67e5\u8be2\u6d89\u53ca\u5927\u91cf\u6570\u636e\u65f6\u3002 \u4e3a\u4ec0\u4e48\u8981\u8bbe\u7f6e\u7d22\u5f15\uff1f \u7d22\u5f15\u901a\u8fc7\u521b\u5efa\u6307\u5411\u8868\u4e2d\u6570\u636e\u7684\u6307\u9488\u6765\u5de5\u4f5c\u3002\u5f53\u6267\u884c\u67e5\u8be2\u65f6\uff0c\u6570\u636e\u5e93\u53ef\u4ee5\u4f7f\u7528\u8fd9\u4e9b\u6307\u9488\u5feb\u901f\u627e\u5230\u6240\u9700\u7684\u6570\u636e\uff0c\u800c\u65e0\u9700\u9010\u884c\u626b\u63cf\u8868\u3002\u8fd9\u5728\u4ee5\u4e0b\u60c5\u51b5\u4e0b\u7279\u522b\u6709\u7528\uff1a \u7ecf\u5e38\u6839\u636e\u7279\u5b9a\u5217\uff08\u4f8b\u5982\u4e3b\u952e\u6216\u552f\u4e00\u952e\uff09\u8fc7\u6ee4\u6216\u6392\u5e8f\u6570\u636e \u8868\u4e2d\u6570\u636e\u91cf\u5f88\u5927 \u5982\u4f55\u8bbe\u7f6e\u7d22\u5f15\uff1f \u5728 SQL Server \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\u521b\u5efa\u7d22\u5f15\uff1a CREATE INDEX [index_name] ON [table_name] ([column_name]) \u767b\u5f55\u540e\u590d\u5236 \u4f8b\u5982\uff0c\u8981\u4e3a &#8220;Customers&#8221; \u8868\u7684 &#8220;Customer_ID&#8221; \u5217\u521b\u5efa\u7d22\u5f15\uff0c\u53ef\u4ee5\u8fd0\u884c\u4ee5\u4e0b\u67e5\u8be2\uff1a CREATE INDEX Customer_ID_Index ON Customers (Customer_ID) \u767b\u5f55\u540e\u590d\u5236 \u7d22\u5f15\u7c7b\u578b\u7684\u9009\u62e9 \u6709\u51e0\u79cd\u4e0d\u540c\u7c7b\u578b\u7684\u7d22\u5f15\u53ef\u7528\uff0c\u5305\u62ec\uff1a \u7c07\u96c6\u7d22\u5f15\uff1a\u5c06\u8868\u4e2d\u7684\u6570\u636e\u91cd\u65b0\uff0c\u4ee5\u4fbf\u6839\u636e\u7d22\u5f15\u952e\u5bf9\u5176\u8fdb\u884c\u6392\u5e8f\u3002\u8fd9\u5c06\u4f18\u5316\u6570\u636e\u68c0\u7d22\uff0c\u4f46\u4f1a\u589e\u52a0\u6570\u636e\u63d2\u5165\u548c\u66f4\u65b0\u7684\u6210\u672c\u3002 \u975e\u7c07\u96c6\u7d22\u5f15\uff1a\u521b\u5efa\u4e00\u4e2a\u6307\u5411\u8868\u6570\u636e\u7684\u72ec\u7acb\u7ed3\u6784\u3002\u8fd9\u901a\u5e38\u6bd4\u7c07\u96c6\u7d22\u5f15\u6027\u80fd\u8f83\u4f4e\uff0c\u4f46\u4e0d\u4f1a\u5f71\u54cd\u6570\u636e\u4fee\u6539\u64cd\u4f5c\u3002 \u552f\u4e00\u7d22\u5f15\uff1a\u786e\u4fdd\u7d22\u5f15\u952e\u4e2d\u7684\u503c\u662f\u552f\u4e00\u7684\uff0c\u8fd9\u6709\u52a9\u4e8e\u7ef4\u62a4\u6570\u636e\u5b8c\u6574\u6027\u3002 \u5168\u6587\u7d22\u5f15\uff1a\u7528\u4e8e\u5bf9\u6587\u672c\u6570\u636e\u8fdb\u884c\u5feb\u901f\u641c\u7d22\u3002 \u6700\u4f73\u5b9e\u8df5 \u5728\u8bbe\u7f6e\u7d22\u5f15\u65f6\uff0c\u5e94\u9075\u5faa\u4ee5\u4e0b\u6700\u4f73\u5b9e\u8df5\uff1a \u53ea\u4e3a\u7ecf\u5e38\u4f7f\u7528\u8fc7\u6ee4\u6216\u6392\u5e8f\u7684\u5217\u521b\u5efa\u7d22\u5f15\u3002 \u907f\u514d\u4e3a\u5c0f\u8868\u521b\u5efa\u7d22\u5f15\uff0c\u56e0\u4e3a\u5f00\u9500\u53ef\u80fd\u8d85\u8fc7\u6536\u76ca\u3002 \u8003\u8651\u8868\u4e2d\u7684\u6570\u636e\u5206\u5e03\u3002\u4f8b\u5982\uff0c\u5982\u679c\u7d22\u5f15\u952e\u7684\u503c\u5206\u5e03\u4e0d\u5747\u5300\uff0c\u5219\u7d22\u5f15\u53ef\u80fd\u4e0d\u592a\u6709\u6548\u3002 \u5b9a\u671f\u76d1\u63a7\u7d22\u5f15\u7684\u4f7f\u7528\u60c5\u51b5\u5e76\u5220\u9664\u4e0d\u7ecf\u5e38\u4f7f\u7528\u7684\u7d22\u5f15\uff0c\u56e0\u4e3a\u5b83\u4eec\u53ef\u80fd\u4f1a\u964d\u4f4e\u67e5\u8be2\u6027\u80fd\u3002 \u4ee5\u4e0a\u5c31\u662fsql\u7d22\u5f15\u600e\u4e48\u8bbe\u7f6e\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-5625","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5625","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=5625"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5625\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=5625"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=5625"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=5625"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}