{"id":5647,"date":"2024-11-14T11:39:55","date_gmt":"2024-11-14T03:39:55","guid":{"rendered":"https:\/\/fwq.ai\/blog\/5647\/"},"modified":"2024-11-14T11:39:55","modified_gmt":"2024-11-14T03:39:55","slug":"sql%e7%b4%a2%e5%bc%95%e6%80%8e%e4%b9%88%e4%bd%bf%e7%94%a8","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/5647\/","title":{"rendered":"sql\u7d22\u5f15\u600e\u4e48\u4f7f\u7528"},"content":{"rendered":"<blockquote><p>\n  \u6570\u636e\u5e93\u7d22\u5f15\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u6570\u636e\u7ed3\u6784\uff0c\u901a\u8fc7\u5feb\u901f\u67e5\u627e\u6765\u63d0\u9ad8\u67e5\u8be2\u6027\u80fd\u3002\u5b83\u5bf9\u8868\u4e2d\u7684\u7279\u5b9a\u5217\u8fdb\u884c\u6392\u5e8f\uff0c\u4ee5\u4fbf\u5feb\u901f\u5b9a\u4f4d\u6ee1\u8db3\u67e5\u8be2\u6761\u4ef6\u7684\u6570\u636e\u3002\u7d22\u5f15\u7c7b\u578b\uff1a \u4e3b\u952e\u7d22\u5f15\u3001\u552f\u4e00\u7d22\u5f15\u3001\u666e\u901a\u7d22\u5f15\u3001\u5168\u6587\u7d22\u5f15\u3002\u4f7f\u7528\u65f6\u673a\uff1a \u7ecf\u5e38\u51fa\u73b0\u5728\u67e5\u8be2\u4e2d\u3001\u5177\u6709\u5927\u91cf\u552f\u4e00\u503c\u6216\u4e0d\u540c\u503c\u7684\u5217\u3001\u53c2\u4e0e\u8054\u63a5\u6216\u6392\u5e8f\u64cd\u4f5c\u7684\u5217\u3002\u521b\u5efa\u7d22\u5f15\uff1a \u4f7f\u7528 create index \u8bed\u6cd5\u3002\u5220\u9664\u7d22\u5f15\uff1a \u4f7f\u7528 drop index \u8bed\u6cd5\u3002\u7ef4\u62a4\u7d22\u5f15\uff1a \u5b9a\u671f\u66f4\u65b0\u6216\u8fd0\u884c reindex \u547d\u4ee4\u3002\u6700\u4f73\u5b9e\u8df5\uff1a \u4ec5\u4e3a\u9700\u8981\u7684\u5217\u521b\u5efa\u7d22\u5f15\uff1b\u5220\u9664\u4e0d\u518d\u4f7f\u7528\u7684\u7d22\u5f15\uff1b\u76d1\u63a7\u7d22\u5f15\u7684\u4f7f\u7528\u60c5\u51b5\u5e76\u5bf9\u5176\u8fdb\u884c\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202405\/30\/2024053019455119542.jpg\" class=\"aligncenter\" title=\"sql\u7d22\u5f15\u600e\u4e48\u4f7f\u7528\u63d2\u56fe\" alt=\"sql\u7d22\u5f15\u600e\u4e48\u4f7f\u7528\u63d2\u56fe\" \/><\/p>\n<p><strong>SQL \u7d22\u5f15\uff1a\u4f7f\u7528\u6307\u5357<\/strong><\/p>\n<p><strong>\u7d22\u5f15\u7684\u542b\u4e49<\/strong><\/p>\n<p>\u7d22\u5f15\u662f\u6570\u636e\u5e93\u4e2d\u7279\u6b8a\u7684\u6570\u636e\u7ed3\u6784\uff0c\u901a\u8fc7\u5feb\u901f\u67e5\u627e\u6765\u63d0\u9ad8\u6570\u636e\u5e93\u67e5\u8be2\u6027\u80fd\u3002\u5b83\u662f\u5bf9\u8868\u4e2d\u7279\u5b9a\u5217\u7684\u503c\u8fdb\u884c\u6392\u5e8f\u7684\u8868\u3002<\/p>\n<p><strong>\u7d22\u5f15\u7684\u5de5\u4f5c\u539f\u7406<\/strong><\/p>\n<p>\u5f53\u5bf9\u8868\u8fdb\u884c\u67e5\u8be2\u65f6\uff0c\u6570\u636e\u5e93\u5f15\u64ce\u4f1a\u4f7f\u7528\u7d22\u5f15\u5feb\u901f\u5b9a\u4f4d\u6ee1\u8db3\u67e5\u8be2\u6761\u4ef6\u7684\u6570\u636e\u3002\u8fd9\u6bd4\u9010\u884c\u626b\u63cf\u6574\u4e2a\u8868\u8981\u9ad8\u6548\u5f97\u591a\u3002<\/p>\n<p><strong>\u7d22\u5f15\u7684\u7c7b\u578b<\/strong><\/p>\n<p>SQL \u4e2d\u6709\u56db\u79cd\u4e3b\u8981\u7684\u7d22\u5f15\u7c7b\u578b\uff1a<\/p>\n<ul>\n<li> <strong>\u4e3b\u952e\u7d22\u5f15\uff1a<\/strong>\u8868\u4e2d\u552f\u4e00\u6807\u8bc6\u6bcf\u884c\u7684\u5217\u6216\u5217\u7ec4\u5408\u3002<\/li>\n<li> <strong>\u552f\u4e00\u7d22\u5f15\uff1a<\/strong>\u8868\u4e2d\u6bcf\u4e2a\u503c\u90fd\u4e0d\u540c\u7684\u5217\u6216\u5217\u7ec4\u5408\u3002<\/li>\n<li> <strong>\u666e\u901a\u7d22\u5f15\uff1a<\/strong>\u52a0\u901f\u67e5\u8be2\u4e2d\u6d89\u53ca\u7684\u975e\u552f\u4e00\u5217\u6216\u5217\u7ec4\u5408\u3002<\/li>\n<li> <strong>\u5168\u6587\u7d22\u5f15\uff1a<\/strong>\u7528\u4e8e\u5bf9\u6587\u672c\u5b57\u6bb5\u8fdb\u884c\u5feb\u901f\u641c\u7d22\u3002<\/li>\n<\/ul>\n<p><strong>\u7d22\u5f15\u7684\u4f7f\u7528\u65f6\u673a<\/strong><\/p>\n<p>\u7d22\u5f15\u5e94\u7528\u4e8e\uff1a<\/p>\n<ul>\n<li>\u7ecf\u5e38\u51fa\u73b0\u5728\u67e5\u8be2\u4e2d\u7684\u5217<\/li>\n<li>\u5177\u6709\u5927\u91cf\u552f\u4e00\u503c\u6216\u4e0d\u540c\u503c\u7684\u5217<\/li>\n<li>\u53c2\u4e0e\u8054\u63a5\u64cd\u4f5c\u7684\u5217<\/li>\n<li>\u6392\u5e8f\u6216\u5206\u7ec4\u64cd\u4f5c\u4e2d\u6d89\u53ca\u7684\u5217<\/li>\n<\/ul>\n<p><strong>\u521b\u5efa\u7d22\u5f15<\/strong><\/p>\n<p>\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\u521b\u5efa\u7d22\u5f15\uff1a<\/p>\n<pre>CREATE INDEX [index_name] ON [table_name] ([column_list]);<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p><strong>\u5220\u9664\u7d22\u5f15<\/strong><\/p>\n<p>\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\u5220\u9664\u7d22\u5f15\uff1a<\/p>\n<pre>DROP INDEX [index_name] ON [table_name];<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p><strong>\u7ef4\u62a4\u7d22\u5f15<\/strong><\/p>\n<p>\u5f53\u8868\u4e2d\u7684\u6570\u636e\u53d1\u751f\u66f4\u6539\u65f6\uff0c\u7d22\u5f15\u9700\u8981\u8fdb\u884c\u7ef4\u62a4\u4ee5\u4fdd\u6301\u6700\u65b0\u72b6\u6001\u3002\u8fd9\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u64cd\u4f5c\u5b8c\u6210\uff1a<\/p>\n<ul>\n<li>\u63d2\u5165\u6570\u636e\u65f6\u81ea\u52a8\u66f4\u65b0\u7d22\u5f15\u3002<\/li>\n<li>\u5b9a\u671f\u8fd0\u884c REINDEX \u547d\u4ee4\u6765\u91cd\u5efa\u7d22\u5f15\u3002<\/li>\n<\/ul>\n<p><strong>\u6700\u4f73\u5b9e\u8df5<\/strong><\/p>\n<p>\u4f7f\u7528\u7d22\u5f15\u65f6\u9075\u5faa\u4ee5\u4e0b\u6700\u4f73\u5b9e\u8df5\uff1a<\/p>\n<ul>\n<li>\u4ec5\u4e3a\u9700\u8981\u7684\u5217\u521b\u5efa\u7d22\u5f15\u3002<\/li>\n<li>\u907f\u514d\u521b\u5efa\u4e0d\u5fc5\u8981\u7684\u7d22\u5f15\uff0c\u56e0\u4e3a\u5b83\u4eec\u4f1a\u964d\u4f4e\u63d2\u5165\u548c\u66f4\u65b0\u64cd\u4f5c\u7684\u6027\u80fd\u3002<\/li>\n<li>\u5220\u9664\u4e0d\u518d\u4f7f\u7528\u7684\u7d22\u5f15\u3002<\/li>\n<li>\u76d1\u63a7\u7d22\u5f15\u7684\u4f7f\u7528\u60c5\u51b5\u5e76\u5bf9\u5176\u8fdb\u884c\u8c03\u6574\u4ee5\u4f18\u5316\u67e5\u8be2\u6027\u80fd\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fsql\u7d22\u5f15\u600e\u4e48\u4f7f\u7528\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>\u6570\u636e\u5e93\u7d22\u5f15\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u6570\u636e\u7ed3\u6784\uff0c\u901a\u8fc7\u5feb\u901f\u67e5\u627e\u6765\u63d0\u9ad8\u67e5\u8be2\u6027\u80fd\u3002\u5b83\u5bf9\u8868\u4e2d\u7684\u7279\u5b9a\u5217\u8fdb\u884c\u6392\u5e8f\uff0c\u4ee5\u4fbf\u5feb\u901f\u5b9a\u4f4d\u6ee1\u8db3\u67e5\u8be2\u6761\u4ef6\u7684\u6570\u636e\u3002\u7d22\u5f15\u7c7b\u578b\uff1a \u4e3b\u952e\u7d22\u5f15\u3001\u552f\u4e00\u7d22\u5f15\u3001\u666e\u901a\u7d22\u5f15\u3001\u5168\u6587\u7d22\u5f15\u3002\u4f7f\u7528\u65f6\u673a\uff1a \u7ecf\u5e38\u51fa\u73b0\u5728\u67e5\u8be2\u4e2d\u3001\u5177\u6709\u5927\u91cf\u552f\u4e00\u503c\u6216\u4e0d\u540c\u503c\u7684\u5217\u3001\u53c2\u4e0e\u8054\u63a5\u6216\u6392\u5e8f\u64cd\u4f5c\u7684\u5217\u3002\u521b\u5efa\u7d22\u5f15\uff1a \u4f7f\u7528 create index \u8bed\u6cd5\u3002\u5220\u9664\u7d22\u5f15\uff1a \u4f7f\u7528 drop index \u8bed\u6cd5\u3002\u7ef4\u62a4\u7d22\u5f15\uff1a \u5b9a\u671f\u66f4\u65b0\u6216\u8fd0\u884c reindex \u547d\u4ee4\u3002\u6700\u4f73\u5b9e\u8df5\uff1a \u4ec5\u4e3a\u9700\u8981\u7684\u5217\u521b\u5efa\u7d22\u5f15\uff1b\u5220\u9664\u4e0d\u518d\u4f7f\u7528\u7684\u7d22\u5f15\uff1b\u76d1\u63a7\u7d22\u5f15\u7684\u4f7f\u7528\u60c5\u51b5\u5e76\u5bf9\u5176\u8fdb\u884c SQL \u7d22\u5f15\uff1a\u4f7f\u7528\u6307\u5357 \u7d22\u5f15\u7684\u542b\u4e49 \u7d22\u5f15\u662f\u6570\u636e\u5e93\u4e2d\u7279\u6b8a\u7684\u6570\u636e\u7ed3\u6784\uff0c\u901a\u8fc7\u5feb\u901f\u67e5\u627e\u6765\u63d0\u9ad8\u6570\u636e\u5e93\u67e5\u8be2\u6027\u80fd\u3002\u5b83\u662f\u5bf9\u8868\u4e2d\u7279\u5b9a\u5217\u7684\u503c\u8fdb\u884c\u6392\u5e8f\u7684\u8868\u3002 \u7d22\u5f15\u7684\u5de5\u4f5c\u539f\u7406 \u5f53\u5bf9\u8868\u8fdb\u884c\u67e5\u8be2\u65f6\uff0c\u6570\u636e\u5e93\u5f15\u64ce\u4f1a\u4f7f\u7528\u7d22\u5f15\u5feb\u901f\u5b9a\u4f4d\u6ee1\u8db3\u67e5\u8be2\u6761\u4ef6\u7684\u6570\u636e\u3002\u8fd9\u6bd4\u9010\u884c\u626b\u63cf\u6574\u4e2a\u8868\u8981\u9ad8\u6548\u5f97\u591a\u3002 \u7d22\u5f15\u7684\u7c7b\u578b SQL \u4e2d\u6709\u56db\u79cd\u4e3b\u8981\u7684\u7d22\u5f15\u7c7b\u578b\uff1a \u4e3b\u952e\u7d22\u5f15\uff1a\u8868\u4e2d\u552f\u4e00\u6807\u8bc6\u6bcf\u884c\u7684\u5217\u6216\u5217\u7ec4\u5408\u3002 \u552f\u4e00\u7d22\u5f15\uff1a\u8868\u4e2d\u6bcf\u4e2a\u503c\u90fd\u4e0d\u540c\u7684\u5217\u6216\u5217\u7ec4\u5408\u3002 \u666e\u901a\u7d22\u5f15\uff1a\u52a0\u901f\u67e5\u8be2\u4e2d\u6d89\u53ca\u7684\u975e\u552f\u4e00\u5217\u6216\u5217\u7ec4\u5408\u3002 \u5168\u6587\u7d22\u5f15\uff1a\u7528\u4e8e\u5bf9\u6587\u672c\u5b57\u6bb5\u8fdb\u884c\u5feb\u901f\u641c\u7d22\u3002 \u7d22\u5f15\u7684\u4f7f\u7528\u65f6\u673a \u7d22\u5f15\u5e94\u7528\u4e8e\uff1a \u7ecf\u5e38\u51fa\u73b0\u5728\u67e5\u8be2\u4e2d\u7684\u5217 \u5177\u6709\u5927\u91cf\u552f\u4e00\u503c\u6216\u4e0d\u540c\u503c\u7684\u5217 \u53c2\u4e0e\u8054\u63a5\u64cd\u4f5c\u7684\u5217 \u6392\u5e8f\u6216\u5206\u7ec4\u64cd\u4f5c\u4e2d\u6d89\u53ca\u7684\u5217 \u521b\u5efa\u7d22\u5f15 \u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\u521b\u5efa\u7d22\u5f15\uff1a CREATE INDEX [index_name] ON [table_name] ([column_list]); \u767b\u5f55\u540e\u590d\u5236 \u5220\u9664\u7d22\u5f15 \u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\u5220\u9664\u7d22\u5f15\uff1a DROP INDEX [index_name] ON [table_name]; \u767b\u5f55\u540e\u590d\u5236 \u7ef4\u62a4\u7d22\u5f15 \u5f53\u8868\u4e2d\u7684\u6570\u636e\u53d1\u751f\u66f4\u6539\u65f6\uff0c\u7d22\u5f15\u9700\u8981\u8fdb\u884c\u7ef4\u62a4\u4ee5\u4fdd\u6301\u6700\u65b0\u72b6\u6001\u3002\u8fd9\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u64cd\u4f5c\u5b8c\u6210\uff1a \u63d2\u5165\u6570\u636e\u65f6\u81ea\u52a8\u66f4\u65b0\u7d22\u5f15\u3002 \u5b9a\u671f\u8fd0\u884c [&hellip;]<\/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-5647","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5647","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=5647"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5647\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=5647"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=5647"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=5647"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}