\u6700\u8fd1\u516c\u53f8\u8ba9\u6211\u505aSQL\u4f18\u5316\u7684\u5de5\u4f5c\uff08MySql\uff09\uff0c\u7528explain\u53d1\u4e86\u4e00\u4e9b\u95ee\u9898\u3002\u5e38\u89c1\u7684\u50cfOR \uff0cIN\uff0c>= \uff0c\u6216\u8005\u662f\u5d4c\u5957\u7b49\u5bfc\u81f4\u7d22\u5f15\u5931\u6548\uff0c\u5bfc\u81f4\u67e5\u8be2\u6027\u80fd\u964d\u4f4e\u7684\u95ee\u9898\u5728\u8fd9\u91cc\u5c31\u4e0d\u505a\u9648\u8ff0\u4e86\uff0c\u7f51\u4e0a\u7684\u6587\u7ae0\u4e00\u641c\u4e00 \u5927\u7247\u3002\u6211\u53ea\u662f\u5199\u70b9\u4e2a\u4eba\u5de5\u4f5c\u4e2d\u9047\u5230\u7684\uff0c\u7f51\u4e0a\u4e0d\u597d\u641c\u7d22\u7684\uff0c\u4f46\u662f\u4e0d\u4fdd\u8bc1\u6240\u6709\u7684\u573a\u666f\u90fd\u8bd5\u7528\uff0c\u540e\u7eed\u6211\u8fd8\u4f1a\u66f4\u65b0\u3002<\/p>\n
1\u3001order by \u548c limit \u7ed3\u5408\u4f7f\u7528\uff0c\u5982\u679cwhere \u5b57\u6bb5\uff0corder by\u5b57\u6bb5\u90fd\u662f\u7d22\u5f15\uff0c\u90a3\u4e48\u6709limit\u7d22\u5f15\u4f1a\u4f7f\u7528order by\u5b57\u6bb5\u6240\u5728\u7684\u7d22\u5f15\u3002\u6ca1\u6709limit\u4f1a\u4f7f\u7528where \u6761\u4ef6\u7684\u7d22\u5f15\u3002\u9047\u5230\u6b64\u7c7b\u72b6\u51b5\u53ef\u4ee5\u8003\u8651\u7528\u5b50\u67e5\u8be2\u5c06order by \u548c limit \u5206\u5f00\u3002\u8fd9\u79cd\u60c5\u51b5\u4e3b\u8981\u53d1\u751f\u5728\u4f60\u7528\u4e86\u591a\u4e2a\u7d22\u5f15\uff0c\u90a3\u4e48\u4f60\u9700\u8981\u6ce8\u610f\u4e86\u3002\u5b83\u53ef\u80fd\u4e0d\u6267\u884c\u4f60\u5e0c\u671b\u7684\u8d70\u7d22\u5f15\u3002\uff08\u6211\u89c9\u5f97mysql\u4f1a\u81ea\u52a8\u8ba1\u7b97\u7d22\u5f15\uff09<\/p>\n
2\u3001DATE_FORMAT()\u683c\u5f0f\u5316\u65f6\u95f4\uff0c\u683c\u5f0f\u5316\u540e\u7684\u65f6\u95f4\u518d\u53bb\u6bd4\u8f83\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u7d22\u5f15\u5931\u6548\u3002<\/p>\n
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[…]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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