{"id":93,"date":"2020-05-27T14:18:34","date_gmt":"2020-05-27T06:18:34","guid":{"rendered":"http:\/\/www.bigqq.com\/?p=93"},"modified":"2020-05-27T14:18:34","modified_gmt":"2020-05-27T06:18:34","slug":"sql-%e5%88%97%e8%bd%ac%e8%a1%8c%ef%bc%8c%e8%a1%8c%e8%bd%ac%e5%88%97","status":"publish","type":"post","link":"http:\/\/www.bigqq.com\/?p=93","title":{"rendered":"sql \u5217\u8f6c\u884c\uff0c\u884c\u8f6c\u5217"},"content":{"rendered":"\n<ul><li>\u5217\u8f6c\u884c <strong>PIVOT<\/strong><\/li><li>\u5217\u8f6c\u884c <strong>UNPIVOT <\/strong> <\/li><\/ul>\n\n\n\n<p>\u5047\u8bbe table week_income\u8868\u5b57\u6bb5user,week,income,type,remark<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><strong>SELECT <\/strong> <strong>[user]<\/strong> ,<strong>[\u661f\u671f\u4e00],[\u661f\u671f\u4e8c],[\u661f\u671f\u4e09],[\u661f\u671f\u56db],[\u661f\u671f\u4e94],[\u661f\u671f\u516d],[\u661f\u671f\u65e5]<\/strong><em>--\u8fd9\u91cc\u662fPIVOT\u7b2c\u4e09\u6b65\uff08\u9009\u62e9\u884c\u8f6c\u5217\u540e\u7684\u7ed3\u679c\u96c6\u7684\u5217\uff09\u8fd9\u91cc\u53ef\u4ee5\u7528\u201c*\u201d\u8868\u793a\u9009\u62e9\u6240\u6709\u5217\uff0c\u4e5f\u53ef\u4ee5\u53ea\u9009\u62e9\u67d0\u4e9b\u5217(\u4e5f\u5c31\u662f\u67d0\u4e9b\u5929)\n<\/em><strong>FROM (select user,week,income from WEEK_INCOME) a<\/strong><em> --\u8fd9\u91cc\u662fPIVOT\u7b2c\u4e8c\u6b65\u9aa4(\u51c6\u5907\u539f\u59cb\u7684\u67e5\u8be2\u7ed3\u679c\uff0c\u56e0\u4e3aPIVOT\u662f\u5bf9\u4e00\u4e2a\u539f\u59cb\u7684\u67e5\u8be2\u7ed3\u679c\u96c6\u8fdb\u884c\u8f6c\u6362\u64cd\u4f5c\uff0c\u6240\u4ee5\u5148\u67e5\u8be2\u4e00\u4e2a\u7ed3\u679c\u96c6\u51fa\u6765)\u8fd9\u91cc\u53ef\u4ee5\u662f\u4e00\u4e2aselect\u5b50\u67e5\u8be2\uff0c\u4f46\u4e3a\u5b50\u67e5\u8be2\u65f6\u5019\u8981\u6307\u5b9a\u522b\u540d\uff0c\u5426\u5219\u8bed\u6cd5\u9519\u8bef<\/em>\n<strong>PIVOT\n(\n    SUM(INCOME) for [week] in([\u661f\u671f\u4e00],[\u661f\u671f\u4e8c],[\u661f\u671f\u4e09],[\u661f\u671f\u56db],[\u661f\u671f\u4e94],[\u661f\u671f\u516d],[\u661f\u671f\u65e5])<\/strong><em>--\u8fd9\u91cc\u662fPIVOT\u7b2c\u4e00\u6b65\u9aa4\uff0c\u4e5f\u662f\u6838\u5fc3\u7684\u5730\u65b9\uff0c\u8fdb\u884c\u884c\u8f6c\u5217\u64cd\u4f5c\u3002\u805a\u5408\u51fd\u6570SUM\u8868\u793a\u4f60\u9700\u8981\u600e\u6837\u5904\u7406\u8f6c\u6362\u540e\u7684\u5217\u7684\u503c\uff0c\u662f\u603b\u548c(sum)\uff0c\u8fd8\u662f\u5e73\u5747(avg)\u8fd8\u662fmin,max\u7b49\u7b49\u3002\u4f8b\u5982\u5982\u679cweek_income\u8868\u4e2d\u6709\u4e24\u6761\u6570\u636e\u5e76\u4e14\u5176week\u90fd\u662f\u201c\u661f\u671f\u4e00\u201d\uff0c\u5176\u4e2d\u4e00\u6761\u7684income\u662f1000,\u53e6\u4e00\u6761income\u662f500\uff0c\u90a3\u4e48\u5728\u8fd9\u91cc\u4f7f\u7528sum\uff0c\u884c\u8f6c\u5217\u540e\u201c\u661f\u671f\u4e00\u201d\u8fd9\u4e2a\u5217\u7684\u503c\u5f53\u7136\u662f1500\u4e86\u3002\u540e\u9762\u7684for [week] in([\u661f\u671f\u4e00],[\u661f\u671f\u4e8c]...)\u4e2d for [week]\u5c31\u662f\u8bf4\u5c06week\u5217\u7684\u503c\u5206\u522b\u8f6c\u6362\u6210\u4e00\u4e2a\u4e2a\u5217\uff0c\u4e5f\u5c31\u662f\u201c\u4ee5\u503c\u53d8\u5217\u201d\u3002\u4f46\u662f\u9700\u8981\u8f6c\u6362\u6210\u5217\u7684\u503c\u6709\u53ef\u80fd\u6709\u5f88\u591a\uff0c\u6211\u4eec\u53ea\u60f3\u53d6\u5176\u4e2d\u51e0\u4e2a\u503c\u8f6c\u6362\u6210\u5217\uff0c\u90a3\u4e48\u600e\u6837\u53d6\u5462\uff1f\u5c31\u662f\u5728in\u91cc\u9762\u4e86\uff0c\u6bd4\u5982\u6211\u6b64\u523b\u53ea\u60f3\u770b\u5de5\u4f5c\u65e5\u7684\u6536\u5165\uff0c\u5728in\u91cc\u9762\u5c31\u53ea\u5199\u201c\u661f\u671f\u4e00\u201d\u81f3\u201c\u661f\u671f\u4e94\u201d\uff08\u6ce8\u610f\uff0cin\u91cc\u9762\u662f\u539f\u6765week\u5217\u7684\u503c,\"\u4ee5\u503c\u53d8\u5217\"\uff09\u3002\u603b\u7684\u6765\u8bf4\uff0cSUM(INCOME) for [week] in([\u661f\u671f\u4e00],[\u661f\u671f\u4e8c],[\u661f\u671f\u4e09],[\u661f\u671f\u56db],[\u661f\u671f\u4e94],[\u661f\u671f\u516d],[\u661f\u671f\u65e5])\u8fd9\u53e5\u7684\u610f\u601d\u5982\u679c\u76f4\u8bd1\u51fa\u6765\uff0c\u5c31\u662f\u8bf4\uff1a\u5c06\u5217[week]\u503c\u4e3a\"\u661f\u671f\u4e00\",\"\u661f\u671f\u4e8c\",\"\u661f\u671f\u4e09\",\"\u661f\u671f\u56db\",\"\u661f\u671f\u4e94\",\"\u661f\u671f\u516d\",\"\u661f\u671f\u65e5\"\u5206\u522b\u8f6c\u6362\u6210\u5217\uff0c\u8fd9\u4e9b\u5217\u7684\u503c\u53d6income\u7684\u603b\u548c\u3002<\/em>\n<strong>)TBL<\/strong><em>--\u522b\u540d\u4e00\u5b9a\u8981\u5199<\/em><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u5217\u8f6c\u884c PIVOT \u5217\u8f6c\u884c UNPIVO [&hellip;]<\/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":"","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":"","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-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"_links":{"self":[{"href":"http:\/\/www.bigqq.com\/index.php?rest_route=\/wp\/v2\/posts\/93"}],"collection":[{"href":"http:\/\/www.bigqq.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.bigqq.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.bigqq.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.bigqq.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=93"}],"version-history":[{"count":1,"href":"http:\/\/www.bigqq.com\/index.php?rest_route=\/wp\/v2\/posts\/93\/revisions"}],"predecessor-version":[{"id":94,"href":"http:\/\/www.bigqq.com\/index.php?rest_route=\/wp\/v2\/posts\/93\/revisions\/94"}],"wp:attachment":[{"href":"http:\/\/www.bigqq.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=93"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.bigqq.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=93"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.bigqq.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=93"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}