{"id":166687,"date":"2024-11-05T18:34:30","date_gmt":"2024-11-05T10:34:30","guid":{"rendered":"https:\/\/server.hk\/cnblog\/166687\/"},"modified":"2024-11-05T18:34:31","modified_gmt":"2024-11-05T10:34:31","slug":"%e5%bf%ab%e9%80%9f%e6%8e%8c%e6%8f%a1%e6%96%b9%e6%b3%95%ef%bc%9a%e6%95%b8%e6%93%9a%e5%ba%ab%e5%a6%82%e4%bd%95%e7%b5%b1%e8%a8%88%e7%9b%b8%e5%90%8c%e9%a0%85%e7%9b%ae%e7%9a%84%e5%85%a9%e5%88%97%e6%95%b8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/166687\/","title":{"rendered":"\u5feb\u901f\u638c\u63e1\u65b9\u6cd5\uff1a\u6578\u64da\u5eab\u5982\u4f55\u7d71\u8a08\u76f8\u540c\u9805\u76ee\u7684\u5169\u5217\u6578\u64da (\u5982\u4f55\u7d71\u8a08\u5169\u5217\u76f8\u540c\u9805\u76ee\u7684\u6578\u64da\u5eab)"},"content":{"rendered":"<h1 id=\"%e5%bf%ab%e9%80%9f%e6%8e%8c%e6%8f%a1%e6%96%b9%e6%b3%95%ef%bc%9a%e6%95%b8%e6%93%9a%e5%ba%ab%e5%a6%82%e4%bd%95%e7%b5%b1%e8%a8%88%e7%9b%b8%e5%90%8c%e9%a0%85%e7%9b%ae%e7%9a%84%e5%85%a9%e5%88%97%e6%95%b8-INuNjkuxox\">\u5feb\u901f\u638c\u63e1\u65b9\u6cd5\uff1a\u6578\u64da\u5eab\u5982\u4f55\u7d71\u8a08\u76f8\u540c\u9805\u76ee\u7684\u5169\u5217\u6578\u64da<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u7d71\u8a08\u76f8\u540c\u9805\u76ee\u7684\u5169\u5217\u6578\u64da\u662f\u4e00\u500b\u5e38\u898b\u7684\u9700\u6c42\u3002\u9019\u7a2e\u64cd\u4f5c\u901a\u5e38\u7528\u65bc\u5206\u6790\u6578\u64da\u3001\u751f\u6210\u5831\u544a\u6216\u9032\u884c\u6578\u64da\u6316\u6398\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u5728\u6578\u64da\u5eab\u4e2d\u6709\u6548\u5730\u7d71\u8a08\u5169\u5217\u76f8\u540c\u9805\u76ee\u7684\u6578\u64da\uff0c\u4e26\u63d0\u4f9b\u76f8\u61c9\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e5%9f%ba%e7%a4%8e%e6%a6%82%e5%bf%b5-INuNjkuxox\">\u6578\u64da\u5eab\u57fa\u790e\u6982\u5ff5<\/h2>\n<p>\u5728\u958b\u59cb\u4e4b\u524d\uff0c\u6211\u5011\u9700\u8981\u4e86\u89e3\u4e00\u4e9b\u57fa\u672c\u7684\u6578\u64da\u5eab\u6982\u5ff5\u3002\u6578\u64da\u5eab\u662f\u4e00\u7a2e\u7d50\u69cb\u5316\u7684\u6578\u64da\u5b58\u5132\u7cfb\u7d71\uff0c\u901a\u5e38\u7531\u8868\u683c\u7d44\u6210\u3002\u6bcf\u500b\u8868\u683c\u5305\u542b\u591a\u884c\u548c\u591a\u5217\uff0c\u884c\u4ee3\u8868\u8a18\u9304\uff0c\u5217\u4ee3\u8868\u5c6c\u6027\u3002\u7576\u6211\u5011\u9700\u8981\u7d71\u8a08\u67d0\u4e9b\u6578\u64da\u6642\uff0c\u901a\u5e38\u6703\u4f7f\u7528SQL\uff08\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff09\u4f86\u9032\u884c\u67e5\u8a62\u548c\u64cd\u4f5c\u3002<\/p>\n<h2 id=\"%e7%b5%b1%e8%a8%88%e7%9b%b8%e5%90%8c%e9%a0%85%e7%9b%ae%e7%9a%84%e5%85%a9%e5%88%97%e6%95%b8%e6%93%9a-INuNjkuxox\">\u7d71\u8a08\u76f8\u540c\u9805\u76ee\u7684\u5169\u5217\u6578\u64da<\/h2>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba <code>sales<\/code> \u7684\u8868\u683c\uff0c\u8a72\u8868\u683c\u5305\u542b\u4ee5\u4e0b\u5217\uff1a<\/p>\n<ul>\n<li><code>product_id<\/code>\uff1a\u7522\u54c1ID<\/li>\n<li><code>quantity<\/code>\uff1a\u92b7\u552e\u6578\u91cf<\/li>\n<\/ul>\n<p>\u6211\u5011\u5e0c\u671b\u7d71\u8a08\u6bcf\u500b\u7522\u54c1\u7684\u7e3d\u92b7\u552e\u6578\u91cf\u3002\u9019\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0bSQL\u67e5\u8a62\u4f86\u5be6\u73fe\uff1a<\/p>\n<pre><code>SELECT product_id, SUM(quantity) AS total_quantity\nFROM sales\nGROUP BY product_id;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u67e5\u8a62\u4e2d\uff0c\u6211\u5011\u4f7f\u7528\u4e86 <code>SUM()<\/code> \u51fd\u6578\u4f86\u8a08\u7b97\u6bcf\u500b\u7522\u54c1\u7684\u7e3d\u92b7\u552e\u6578\u91cf\uff0c\u4e26\u4f7f\u7528 <code>GROUP BY<\/code> \u5b50\u53e5\u4f86\u6309 <code>product_id<\/code> \u5206\u7d44\u3002\u9019\u6a23\uff0c\u6211\u5011\u5c31\u80fd\u5920\u7372\u5f97\u6bcf\u500b\u7522\u54c1\u7684\u7e3d\u92b7\u552e\u6578\u91cf\u3002<\/p>\n<h2 id=\"%e9%80%b2%e9%9a%8e%e7%b5%b1%e8%a8%88%ef%bc%9a%e5%a4%9a%e5%88%97%e6%95%b8%e6%93%9a%e7%9a%84%e7%b5%b1%e8%a8%88-INuNjkuxox\">\u9032\u968e\u7d71\u8a08\uff1a\u591a\u5217\u6578\u64da\u7684\u7d71\u8a08<\/h2>\n<p>\u9664\u4e86\u7d71\u8a08\u55ae\u4e00\u5217\u7684\u6578\u64da\u5916\uff0c\u6709\u6642\u6211\u5011\u9700\u8981\u540c\u6642\u7d71\u8a08\u591a\u5217\u6578\u64da\u3002\u4f8b\u5982\uff0c\u5047\u8a2d\u6211\u5011\u7684 <code>sales<\/code> \u8868\u683c\u9084\u5305\u542b\u4e00\u5217 <code>region<\/code>\uff0c\u8868\u793a\u92b7\u552e\u5730\u5340\u3002\u6211\u5011\u5e0c\u671b\u7d71\u8a08\u6bcf\u500b\u5730\u5340\u6bcf\u500b\u7522\u54c1\u7684\u7e3d\u92b7\u552e\u6578\u91cf\u3002\u9019\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0b\u67e5\u8a62\u4f86\u5be6\u73fe\uff1a<\/p>\n<pre><code>SELECT product_id, region, SUM(quantity) AS total_quantity\nFROM sales\nGROUP BY product_id, region;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u67e5\u8a62\u4e2d\uff0c\u6211\u5011\u5c07 <code>region<\/code> \u5217\u6dfb\u52a0\u5230 <code>GROUP BY<\/code> \u5b50\u53e5\u4e2d\uff0c\u9019\u6a23\u5c31\u80fd\u5920\u6309\u7522\u54c1\u548c\u5730\u5340\u9032\u884c\u5206\u7d44\uff0c\u5f9e\u800c\u7372\u5f97\u66f4\u8a73\u7d30\u7684\u7d71\u8a08\u4fe1\u606f\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8having%e5%ad%90%e5%8f%a5%e9%80%b2%e8%a1%8c%e9%81%8e%e6%bf%be-INuNjkuxox\">\u4f7f\u7528HAVING\u5b50\u53e5\u9032\u884c\u904e\u6ffe<\/h2>\n<p>\u6709\u6642\u5019\uff0c\u6211\u5011\u53ef\u80fd\u53ea\u5c0d\u67d0\u4e9b\u7279\u5b9a\u7684\u7d71\u8a08\u7d50\u679c\u611f\u8208\u8da3\u3002\u4f8b\u5982\uff0c\u6211\u5011\u53ef\u80fd\u53ea\u60f3\u67e5\u770b\u7e3d\u92b7\u552e\u6578\u91cf\u8d85\u904e100\u7684\u7522\u54c1\u3002\u9019\u6642\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 <code>HAVING<\/code> \u5b50\u53e5\u4f86\u904e\u6ffe\u7d50\u679c\uff1a<\/p>\n<pre><code>SELECT product_id, SUM(quantity) AS total_quantity\nFROM sales\nGROUP BY product_id\nHAVING total_quantity &gt; 100;<\/code><\/pre>\n<p>\u9019\u6a23\uff0c\u6211\u5011\u5c31\u80fd\u5920\u7372\u5f97\u7b26\u5408\u689d\u4ef6\u7684\u7522\u54c1\u7d71\u8a08\u7d50\u679c\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-INuNjkuxox\">\u7d50\u8ad6<\/h2>\n<p>\u7d71\u8a08\u6578\u64da\u5eab\u4e2d\u76f8\u540c\u9805\u76ee\u7684\u5169\u5217\u6578\u64da\u662f\u4e00\u9805\u91cd\u8981\u7684\u6280\u80fd\uff0c\u80fd\u5920\u5e6b\u52a9\u6211\u5011\u66f4\u597d\u5730\u7406\u89e3\u548c\u5206\u6790\u6578\u64da\u3002\u901a\u904e\u4f7f\u7528 SQL \u7684\u805a\u5408\u51fd\u6578\u548c\u5206\u7d44\u529f\u80fd\uff0c\u6211\u5011\u53ef\u4ee5\u8f15\u9b06\u5730\u7372\u5f97\u6240\u9700\u7684\u7d71\u8a08\u4fe1\u606f\u3002\u7121\u8ad6\u662f\u55ae\u5217\u9084\u662f\u591a\u5217\u7684\u7d71\u8a08\uff0c\u638c\u63e1\u9019\u4e9b\u57fa\u672c\u7684 SQL \u67e5\u8a62\u6280\u5de7\u90fd\u5c07\u5c0d\u6578\u64da\u5206\u6790\u5de5\u4f5c\u5927\u6709\u88e8\u76ca\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u6578\u64da\u5eab\u7ba1\u7406\u6216\u5176\u4ed6\u6280\u8853\u554f\u984c\u6709\u9032\u4e00\u6b65\u7684\u9700\u6c42\uff0c\u60a8\u53ef\u4ee5\u8003\u616e\u4f7f\u7528 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u670d\u52d9\uff0c\u9019\u5c07\u70ba\u60a8\u7684\u6578\u64da\u8655\u7406\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5feb\u901f\u638c\u63e1\u5982\u4f55\u5728\u6578\u64da\u5eab\u4e2d\u7d71\u8a08\u5169\u5217\u76f8\u540c\u9805\u76ee\u7684\u6578\u64da\uff0c\u63d0\u5347\u6578\u64da\u5206\u6790\u6548\u7387\uff0c\u7c21\u5316\u6578\u64da\u8655\u7406\u6d41\u7a0b\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-166687","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/166687","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=166687"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/166687\/revisions"}],"predecessor-version":[{"id":166688,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/166687\/revisions\/166688"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=166687"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=166687"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=166687"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}