{"id":168345,"date":"2024-11-06T11:36:21","date_gmt":"2024-11-06T03:36:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/168345\/"},"modified":"2024-11-06T11:36:22","modified_gmt":"2024-11-06T03:36:22","slug":"sql-%e5%a4%9a%e5%ad%97%e6%ae%b5%e6%b1%82%e5%92%8c%e4%b8%a6%e4%bd%9c%e7%82%ba-sql-%e6%9f%a5%e8%a9%a2%e6%a2%9d%e4%bb%b6%e7%9a%84%e5%af%a6%e7%8f%be","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/168345\/","title":{"rendered":"SQL \u591a\u5b57\u6bb5\u6c42\u548c\u4e26\u4f5c\u70ba SQL \u67e5\u8a62\u689d\u4ef6\u7684\u5be6\u73fe"},"content":{"rendered":"<h1 id=\"sql-%e5%a4%9a%e5%ad%97%e6%ae%b5%e6%b1%82%e5%92%8c%e4%b8%a6%e4%bd%9c%e7%82%ba-sql-%e6%9f%a5%e8%a9%a2%e6%a2%9d%e4%bb%b6%e7%9a%84%e5%af%a6%e7%8f%be-YtYaHzYiSx\">SQL \u591a\u5b57\u6bb5\u6c42\u548c\u4e26\u4f5c\u70ba SQL \u67e5\u8a62\u689d\u4ef6\u7684\u5be6\u73fe<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0cSQL\uff08\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff09\u662f\u4e00\u7a2e\u5f37\u5927\u7684\u5de5\u5177\uff0c\u80fd\u5920\u5e6b\u52a9\u7528\u6236\u9ad8\u6548\u5730\u67e5\u8a62\u548c\u64cd\u4f5c\u6578\u64da\u3002\u7576\u6211\u5011\u9700\u8981\u5c0d\u591a\u500b\u5b57\u6bb5\u9032\u884c\u6c42\u548c\u4e26\u5c07\u5176\u4f5c\u70ba\u67e5\u8a62\u689d\u4ef6\u6642\uff0cSQL \u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u5be6\u73fe\u9019\u4e00\u9700\u6c42\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728 SQL \u4e2d\u9032\u884c\u591a\u5b57\u6bb5\u6c42\u548c\uff0c\u4e26\u5c07\u7d50\u679c\u7528\u4f5c\u67e5\u8a62\u689d\u4ef6\uff0c\u4e26\u63d0\u4f9b\u76f8\u61c9\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u3002<\/p>\n<h2 id=\"%e5%a4%9a%e5%ad%97%e6%ae%b5%e6%b1%82%e5%92%8c%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-YtYaHzYiSx\">\u591a\u5b57\u6bb5\u6c42\u548c\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u5728 SQL \u4e2d\uff0c\u5c0d\u591a\u500b\u5b57\u6bb5\u9032\u884c\u6c42\u548c\u901a\u5e38\u4f7f\u7528 <code>SUM()<\/code> \u51fd\u6578\u3002\u9019\u500b\u51fd\u6578\u53ef\u4ee5\u5c0d\u6307\u5b9a\u5217\u7684\u6578\u503c\u9032\u884c\u52a0\u7e3d\u3002\u7576\u6211\u5011\u9700\u8981\u5c0d\u591a\u500b\u5b57\u6bb5\u9032\u884c\u6c42\u548c\u6642\uff0c\u53ef\u4ee5\u5c07\u9019\u4e9b\u5b57\u6bb5\u76f8\u52a0\uff0c\u7136\u5f8c\u5c07\u7d50\u679c\u50b3\u905e\u7d66 <code>SUM()<\/code> \u51fd\u6578\u3002<\/p>\n<h3 id=\"%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-YtYaHzYiSx\">\u57fa\u672c\u8a9e\u6cd5<\/h3>\n<pre><code>SELECT SUM(column1 + column2 + column3) AS total_sum\nFROM table_name\nWHERE condition;<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c<code>column1<\/code>\u3001<code>column2<\/code> \u548c <code>column3<\/code> \u662f\u9700\u8981\u6c42\u548c\u7684\u5b57\u6bb5\uff0c<code>total_sum<\/code> \u662f\u6c42\u548c\u7d50\u679c\u7684\u5225\u540d\uff0c<code>table_name<\/code> \u662f\u6578\u64da\u8868\u7684\u540d\u7a31\uff0c<code>condition<\/code> \u662f\u67e5\u8a62\u689d\u4ef6\u3002<\/p>\n<h2 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a%e5%a4%9a%e5%ad%97%e6%ae%b5%e6%b1%82%e5%92%8c-YtYaHzYiSx\">\u793a\u4f8b\uff1a\u591a\u5b57\u6bb5\u6c42\u548c<\/h2>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba <code>sales<\/code> \u7684\u8868\uff0c\u8a72\u8868\u5305\u542b\u4ee5\u4e0b\u5b57\u6bb5\uff1a<\/p>\n<ul>\n<li><code>product_id<\/code> &#8211; \u7522\u54c1ID<\/li>\n<li><code>quantity_sold<\/code> &#8211; \u92b7\u552e\u6578\u91cf<\/li>\n<li><code>price_per_unit<\/code> &#8211; \u55ae\u50f9<\/li>\n<\/ul>\n<p>\u6211\u5011\u5e0c\u671b\u8a08\u7b97\u6bcf\u500b\u7522\u54c1\u7684\u7e3d\u92b7\u552e\u984d\uff0c\u5373 <code>quantity_sold<\/code> \u548c <code>price_per_unit<\/code> \u7684\u4e58\u7a4d\u4e4b\u548c\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u67e5\u8a62\uff1a<\/p>\n<pre><code>SELECT product_id, SUM(quantity_sold * price_per_unit) AS total_sales\nFROM sales\nGROUP BY product_id;<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u5c07\u8fd4\u56de\u6bcf\u500b\u7522\u54c1\u7684\u7e3d\u92b7\u552e\u984d\uff0c\u4e26\u6839\u64da <code>product_id<\/code> \u9032\u884c\u5206\u7d44\u3002<\/p>\n<h2 id=\"%e5%b0%87%e6%b1%82%e5%92%8c%e7%b5%90%e6%9e%9c%e4%bd%9c%e7%82%ba%e6%9f%a5%e8%a9%a2%e6%a2%9d%e4%bb%b6-YtYaHzYiSx\">\u5c07\u6c42\u548c\u7d50\u679c\u4f5c\u70ba\u67e5\u8a62\u689d\u4ef6<\/h2>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u6211\u5011\u53ef\u80fd\u5e0c\u671b\u6839\u64da\u6c42\u548c\u7684\u7d50\u679c\u4f86\u904e\u6ffe\u6578\u64da\u3002\u4f8b\u5982\uff0c\u6211\u5011\u53ea\u60f3\u67e5\u8a62\u7e3d\u92b7\u552e\u984d\u8d85\u904e 1000 \u7684\u7522\u54c1\u3002\u9019\u53ef\u4ee5\u901a\u904e\u4f7f\u7528 <code>HAVING<\/code> \u5b50\u53e5\u4f86\u5be6\u73fe\uff1a<\/p>\n<pre><code>SELECT product_id, SUM(quantity_sold * price_per_unit) AS total_sales\nFROM sales\nGROUP BY product_id\nHAVING total_sales &gt; 1000;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u67e5\u8a62\u4e2d\uff0c<code>HAVING<\/code> \u5b50\u53e5\u7528\u65bc\u904e\u6ffe\u51fa\u7e3d\u92b7\u552e\u984d\u5927\u65bc 1000 \u7684\u7522\u54c1\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-YtYaHzYiSx\">\u7d50\u8ad6<\/h2>\n<p>\u901a\u904e\u4f7f\u7528 SQL \u7684 <code>SUM()<\/code> \u51fd\u6578\uff0c\u6211\u5011\u53ef\u4ee5\u8f15\u9b06\u5730\u5c0d\u591a\u500b\u5b57\u6bb5\u9032\u884c\u6c42\u548c\uff0c\u4e26\u6839\u64da\u6c42\u548c\u7d50\u679c\u9032\u884c\u67e5\u8a62\u689d\u4ef6\u7684\u904e\u6ffe\u3002\u9019\u7a2e\u65b9\u6cd5\u5728\u6578\u64da\u5206\u6790\u548c\u5831\u544a\u4e2d\u975e\u5e38\u6709\u7528\uff0c\u80fd\u5920\u5e6b\u52a9\u7528\u6236\u5feb\u901f\u7372\u53d6\u6240\u9700\u7684\u4fe1\u606f\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc SQL \u67e5\u8a62\u6709\u66f4\u591a\u7684\u9700\u6c42\uff0c\u6216\u8005\u9700\u8981\u9ad8\u6548\u7684\u6578\u64da\u8655\u7406\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528 <a href=\"https:\/\/server.hk\">\u9999\u6e2f VPS<\/a> \u670d\u52d9\u4f86\u642d\u5efa\u60a8\u7684\u6578\u64da\u5eab\u74b0\u5883\uff0c\u4eab\u53d7\u66f4\u9ad8\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5982\u4f55\u5728 SQL \u4e2d\u5be6\u73fe\u591a\u5b57\u6bb5\u6c42\u548c\u4e26\u5c07\u5176\u4f5c\u70ba\u67e5\u8a62\u689d\u4ef6\uff0c\u63d0\u5347\u6578\u64da\u5206\u6790\u6548\u7387\u8207\u6e96\u78ba\u6027\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-168345","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168345","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=168345"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168345\/revisions"}],"predecessor-version":[{"id":168346,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168345\/revisions\/168346"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=168345"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=168345"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=168345"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}