{"id":860,"date":"2025-07-26T02:26:58","date_gmt":"2025-07-25T18:26:58","guid":{"rendered":"https:\/\/www.hgfwq.com\/blog\/?p=860"},"modified":"2025-07-26T02:26:58","modified_gmt":"2025-07-25T18:26:58","slug":"having%e4%b8%8egroup-by%e7%9a%84%e5%8c%ba%e5%88%ab%e5%8f%8a%e5%85%b6%e5%9c%a8sql%e4%b8%ad%e7%9a%84%e5%ba%94%e7%94%a8%e5%88%86%e6%9e%90","status":"publish","type":"post","link":"https:\/\/www.hgfwq.com\/blog\/860.html","title":{"rendered":"HAVING\u4e0eGROUP BY\u7684\u533a\u522b\u53ca\u5176\u5728SQL\u4e2d\u7684\u5e94\u7528\u5206\u6790"},"content":{"rendered":"\n<p><h1>HAVING\u4e0eGROUP BY\u7684\u533a\u522b<\/h1>\n<\/p>\n<p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/www.hgfwq.com\/blog\/wp-content\/uploads\/2025\/07\/G6aGza9Gj.jpg\" alt=\"HAVING\u4e0eGROUP BY\u7684\u533a\u522b\u53ca\u5176\u5728SQL\u4e2d\u7684\u5e94\u7528\u5206\u6790\" title=\"HAVING\u4e0eGROUP BY\u7684\u533a\u522b\u53ca\u5176\u5728SQL\u4e2d\u7684\u5e94\u7528\u5206\u6790\"><\/p>\n<p><p>\u5168\u7bc7\u7cbe\u534e\uff1aHAVING\u548cGROUP BY\u90fd\u662fSQL\u67e5\u8be2\u4e2d\u7528\u4e8e\u6570\u636e\u805a\u5408\u7684\u5b50\u53e5\uff0c\u4f46\u5b83\u4eec\u7684\u4f5c\u7528\u548c\u9002\u7528\u573a\u666f\u6709\u6240\u4e0d\u540c\u3002GROUP BY\u7528\u4e8e\u5bf9\u6570\u636e\u8fdb\u884c\u5206\u7ec4\uff0c\u800cHAVING\u5219\u7528\u4e8e\u8fc7\u6ee4\u5206\u7ec4\u540e\u7684\u7ed3\u679c\u3002\u6b63\u786e\u7406\u89e3\u548c\u4f7f\u7528\u8fd9\u4e24\u4e2a\u5b50\u53e5\u5bf9\u4e8e\u9ad8\u6548\u5904\u7406\u6570\u636e\u81f3\u5173\u91cd\u8981\u3002<\/p>\n<\/p>\n<p><h2>\u5f15\u8a00<\/h2>\n<\/p>\n<p><p>\u5728\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\u4e2d\uff0c\u5bf9\u6570\u636e\u8fdb\u884c\u67e5\u8be2\u548c\u5904\u7406\u662f\u57fa\u672c\u64cd\u4f5c\u4e4b\u4e00\u3002SQL\uff08Structured Query Language\uff09\u4f5c\u4e3a\u6570\u636e\u5e93\u67e5\u8be2\u7684\u6807\u51c6\u8bed\u8a00\uff0c\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u529f\u80fd\u6765\u6ee1\u8db3\u5404\u79cd\u6570\u636e\u5904\u7406\u9700\u6c42\u3002\u5728SQL\u67e5\u8be2\u4e2d\uff0cGROUP BY\u548cHAVING\u662f\u4e24\u4e2a\u5e38\u7528\u7684\u5b50\u53e5\uff0c\u7528\u4e8e\u5bf9\u6570\u636e\u8fdb\u884c\u5206\u7ec4\u548c\u8fc7\u6ee4\u3002\u672c\u6587\u5c06\u6df1\u5165\u63a2\u8ba8HAVING\u4e0eGROUP BY\u7684\u533a\u522b\uff0c\u5e2e\u52a9\u8bfb\u8005\u66f4\u597d\u5730\u7406\u89e3\u548c\u4f7f\u7528\u8fd9\u4e24\u4e2a\u5b50\u53e5\u3002<\/p>\n<\/p>\n<p><h2>GROUP BY\u5b50\u53e5<\/h2>\n<\/p>\n<p><p>GROUP BY\u5b50\u53e5\u7528\u4e8e\u5bf9\u67e5\u8be2\u7ed3\u679c\u8fdb\u884c\u5206\u7ec4\uff0c\u901a\u5e38\u4e0e\u805a\u5408\u51fd\u6570\uff08\u5982COUNT\u3001SUM\u3001AVG\u7b49\uff09\u4e00\u8d77\u4f7f\u7528\u3002\u5b83\u53ef\u4ee5\u5c06\u5177\u6709\u76f8\u540c\u503c\u7684\u8bb0\u5f55\u7ec4\u5408\u5728\u4e00\u8d77\uff0c\u5f62\u6210\u4e00\u4e2a\u65b0\u7684\u8bb0\u5f55\u96c6\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528GROUP BY\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n<p><pre><\/p>\r\n<p>SELECT category, COUNT() as total_items<\/p>\r\n<p>FROM products<\/p>\r\n<p>GROUP BY category;<\/p>\r\n<p>    <\/pre>\n<\/p>\n<p><p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u67e5\u8be2\u4e86\u540d\u4e3aproducts\u7684\u8868\uff0c\u5e76\u6309\u7167category\u5b57\u6bb5\u8fdb\u884c\u5206\u7ec4\u3002\u805a\u5408\u51fd\u6570COUNT()\u8ba1\u7b97\u6bcf\u4e2a\u7c7b\u522b\u7684\u4ea7\u54c1\u6570\u91cf\uff0c\u5e76\u5c06\u7ed3\u679c\u5217\u547d\u540d\u4e3atotal_items\u3002<\/p>\n<\/p>\n<p><h2>HAVING\u5b50\u53e5<\/h2>\n<\/p>\n<p><p>HAVING\u5b50\u53e5\u7528\u4e8e\u5728GROUP BY\u5206\u7ec4\u4e4b\u540e\u5bf9\u7ed3\u679c\u8fdb\u884c\u8fc7\u6ee4\u3002\u4e0eWHERE\u5b50\u53e5\u4e0d\u540c\uff0cWHERE\u5b50\u53e5\u7528\u4e8e\u8fc7\u6ee4\u539f\u59cb\u6570\u636e\uff0c\u800cHAVING\u5b50\u53e5\u7528\u4e8e\u8fc7\u6ee4\u5206\u7ec4\u540e\u7684\u7ed3\u679c\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528HAVING\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n<p><pre><\/p>\r\n<p>SELECT category, COUNT() as total_items<\/p>\r\n<p>FROM products<\/p>\r\n<p>GROUP BY category<\/p>\r\n<p>HAVING COUNT() > 10;<\/p>\r\n<p>    <\/pre>\n<\/p>\n<p><p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u540c\u6837\u67e5\u8be2\u4e86products\u8868\uff0c\u5e76\u6309\u7167category\u5b57\u6bb5\u8fdb\u884c\u5206\u7ec4\u3002\u4f46\u662f\uff0c\u6211\u4eec\u4f7f\u7528HAVING\u5b50\u53e5\u6765\u8fc7\u6ee4\u6389\u90a3\u4e9b\u4ea7\u54c1\u6570\u91cf\u5c0f\u4e8e\u6216\u7b49\u4e8e10\u7684\u7c7b\u522b\u3002<\/p>\n<\/p>\n<p><h2>HAVING\u4e0eGROUP BY\u7684\u533a\u522b<\/h2>\n<\/p>\n<p><p>\u867d\u7136HAVING\u548cGROUP BY\u90fd\u7528\u4e8e\u6570\u636e\u805a\u5408\uff0c\u4f46\u5b83\u4eec\u4e4b\u95f4\u5b58\u5728\u4e00\u4e9b\u5173\u952e\u533a\u522b\uff1a<\/p>\n<\/p>\n<ul>\n<li><strong>\u5e94\u7528\u65f6\u673a\uff1a<\/strong>GROUP BY\u5728\u67e5\u8be2\u4e2d\u5fc5\u987b\u4f7f\u7528\uff0c\u800cHAVING\u662f\u53ef\u9009\u7684\u3002<\/li>\n<li><strong>\u4f5c\u7528\u5bf9\u8c61\uff1a<\/strong>GROUP 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