{"id":23184,"date":"2024-11-21T14:27:03","date_gmt":"2024-11-21T06:27:03","guid":{"rendered":"https:\/\/fwq.ai\/blog\/23184\/"},"modified":"2024-11-21T14:27:03","modified_gmt":"2024-11-21T06:27:03","slug":"thinkphp%e5%a6%82%e4%bd%95%e8%bf%9b%e8%a1%8c%e5%a4%9a%e8%a1%a8%e9%93%be%e6%8e%a5%e6%9f%a5%e8%af%a2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/23184\/","title":{"rendered":"thinkphp\u5982\u4f55\u8fdb\u884c\u591a\u8868\u94fe\u63a5\u67e5\u8be2"},"content":{"rendered":"<\/p>\n<p>\u8981\u5b66\u4f1a\u5728ThinkPHP\u4e2d\u8fdb\u884c\u591a\u8868\u94fe\u63a5\u67e5\u8be2\uff0c\u9996\u5148\u9700\u8981\u638c\u63e1\u57fa\u672c\u8bed\u6cd5\u3002\u5728ThinkPHP\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u5f0f\u8fdb\u884c\u591a\u8868\u94fe\u63a5\u67e5\u8be2\uff1a<\/p>\n<pre>Db::table('table1')\n&nbsp;&nbsp;&nbsp;&nbsp;-&amp;gt;alias('t1')\n&nbsp;&nbsp;&nbsp;&nbsp;-&amp;gt;join('table2&nbsp;t2',&nbsp;'t1.id&nbsp;=&nbsp;t2.table1_id')\n&nbsp;&nbsp;&nbsp;&nbsp;-&amp;gt;join('table3&nbsp;t3',&nbsp;'t1.id&nbsp;=&nbsp;t3.table1_id')\n&nbsp;&nbsp;&nbsp;&nbsp;-&amp;gt;where('t1.id',&nbsp;$id)\n&nbsp;&nbsp;&nbsp;&nbsp;-&amp;gt;select();<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u5728\u4e0a\u8ff0\u8bed\u53e5\u4e2d\uff0c\u6211\u4eec\u901a\u8fc7join\u65b9\u6cd5\u8fdb\u884c\u4e86\u591a\u8868\u94fe\u63a5\uff0c\u5176\u4e2d\u7b2c\u4e00\u4e2a\u53c2\u6570\u4e3a\u8981\u94fe\u63a5\u7684\u8868\u540d\uff0c\u7b2c\u4e8c\u4e2a\u53c2\u6570\u4e3a\u94fe\u63a5\u6761\u4ef6\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u522b\u540dalias\u6765\u4e3a\u8868\u6dfb\u52a0\u522b\u540d\uff0c\u65b9\u4fbf\u540e\u7eed\u64cd\u4f5c\u3002<\/p>\n<p>\u5728where\u65b9\u6cd5\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u6307\u5b9a\u9700\u8981\u7b5b\u9009\u7684\u6761\u4ef6\u3002\u5728\u672c\u4f8b\u4e2d\uff0c\u6211\u4eec\u901a\u8fc7t1.id\u6765\u7b5b\u9009t1\u8868\u4e2did\u5b57\u6bb5\u7b49\u4e8e$id\u7684\u8bb0\u5f55\u3002<\/p>\n<p>\u6211\u4eec\u53ef\u80fd\u9700\u8981\u8fdb\u884c\u66f4\u4e3a\u590d\u6742\u7684\u8fde\u63a5\u67e5\u8be2\uff0c\u5c06\u591a\u4e2a\u8868\u4e2d\u7684\u6570\u636e\u6574\u5408\u5728\u4e00\u8d77\u8fdb\u884c\u7edf\u8ba1\u5206\u6790\u3002\u8fd9\u65f6\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528ThinkPHP\u63d0\u4f9b\u7684\u805a\u5408\u51fd\u6570\u6765\u8fdb\u884c\u8ba1\u7b97\u3002<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<p>\u4f8b\u5982\uff0c\u6211\u4eec\u8981\u7edf\u8ba1\u6bcf\u4e2a\u7528\u6237\u7684\u8ba2\u5355\u6570\u91cf\uff0c\u53ef\u4ee5\u4f7f\u7528\u5982\u4e0b\u8bed\u53e5\u8fdb\u884c\u67e5\u8be2\uff1a<\/p>\n<pre>Db::table('user')\n&nbsp;&nbsp;&nbsp;&nbsp;-&amp;gt;alias('u')\n&nbsp;&nbsp;&nbsp;&nbsp;-&amp;gt;join('order&nbsp;o',&nbsp;'u.id&nbsp;=&nbsp;o.user_id')\n&nbsp;&nbsp;&nbsp;&nbsp;-&amp;gt;field('u.*,&nbsp;COUNT(o.id)&nbsp;as&nbsp;order_num')\n&nbsp;&nbsp;&nbsp;&nbsp;-&amp;gt;group('u.id')\n&nbsp;&nbsp;&nbsp;&nbsp;-&amp;gt;select();<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u5728\u4e0a\u8ff0\u8bed\u53e5\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u4e86COUNT\u51fd\u6570\u6765\u7edf\u8ba1order\u8868\u4e2d\u6bcf\u4e2a\u7528\u6237\u7684\u8ba2\u5355\u6570\u91cf\uff0c\u5e76\u4f7f\u7528group\u65b9\u6cd5\u5c06\u7ed3\u679c\u6309\u7167u.id\u8fdb\u884c\u5206\u7ec4\u3002<\/p>\n<p>\u9664\u6b64\u4e4b\u5916\uff0c\u6211\u4eec\u8fd8\u53ef\u4ee5\u4f7f\u7528HAVING\u6761\u4ef6\u8fdb\u884c\u66f4\u8fdb\u4e00\u6b65\u7684\u7b5b\u9009\u3002\u4f8b\u5982\uff0c\u6211\u4eec\u8981\u7b5b\u9009\u51fa\u8ba2\u5355\u6570\u91cf\u5927\u4e8e\u7b49\u4e8e5\u7684\u7528\u6237\uff0c\u53ef\u4ee5\u4f7f\u7528\u5982\u4e0b\u8bed\u53e5\uff1a<\/p>\n<pre>Db::table('user')\n&nbsp;&nbsp;&nbsp;&nbsp;-&amp;gt;alias('u')\n&nbsp;&nbsp;&nbsp;&nbsp;-&amp;gt;join('order&nbsp;o',&nbsp;'u.id&nbsp;=&nbsp;o.user_id')\n&nbsp;&nbsp;&nbsp;&nbsp;-&amp;gt;field('u.*,&nbsp;COUNT(o.id)&nbsp;as&nbsp;order_num')\n&nbsp;&nbsp;&nbsp;&nbsp;-&amp;gt;group('u.id')\n&nbsp;&nbsp;&nbsp;&nbsp;-&amp;gt;having('order_num&nbsp;&amp;gt;=&nbsp;5')\n&nbsp;&nbsp;&nbsp;&nbsp;-&amp;gt;select();<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u5728\u4e0a\u8ff0\u8bed\u53e5\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u4e86HAVING\u6761\u4ef6\u6765\u7b5b\u9009\u51fa\u8ba2\u5355\u6570\u91cf\u5927\u4e8e\u7b49\u4e8e5\u7684\u7528\u6237\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u5982\u4f55\u8fdb\u884c\u591a\u8868\u94fe\u63a5\u67e5\u8be2\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8981\u5b66\u4f1a\u5728ThinkPHP\u4e2d\u8fdb\u884c\u591a\u8868\u94fe\u63a5\u67e5\u8be2\uff0c\u9996\u5148\u9700\u8981\u638c\u63e1\u57fa\u672c\u8bed\u6cd5\u3002\u5728ThinkPHP\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u5f0f\u8fdb\u884c\u591a\u8868\u94fe\u63a5\u67e5\u8be2\uff1a Db::table(&#8216;table1&#8217;) &nbsp;&nbsp;&nbsp;&nbsp;-&amp;gt;alias(&#8216;t1&#8217;) &nbsp;&nbsp;&nbsp;&nbsp;-&amp;gt;join(&#8216;table2&nbsp;t2&#8217;,&nbsp;&#8216;t1.id&nbsp;=&nbsp;t2.table1_id&#8217;) &nbsp;&nbsp;&nbsp;&nbsp;-&amp;gt;join(&#8216;table3&nbsp;t3&#8217;,&nbsp;&#8216;t1.id&nbsp;=&nbsp;t3.table1_id&#8217;) &nbsp;&nbsp;&nbsp;&nbsp;-&amp;gt;where(&#8216;t1.id&#8217;,&nbsp;$id) &nbsp;&nbsp;&nbsp;&nbsp;-&amp;gt;select(); \u767b\u5f55\u540e\u590d\u5236 \u5728\u4e0a\u8ff0\u8bed\u53e5\u4e2d\uff0c\u6211\u4eec\u901a\u8fc7join\u65b9\u6cd5\u8fdb\u884c\u4e86\u591a\u8868\u94fe\u63a5\uff0c\u5176\u4e2d\u7b2c\u4e00\u4e2a\u53c2\u6570\u4e3a\u8981\u94fe\u63a5\u7684\u8868\u540d\uff0c\u7b2c\u4e8c\u4e2a\u53c2\u6570\u4e3a\u94fe\u63a5\u6761\u4ef6\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u522b\u540dalias\u6765\u4e3a\u8868\u6dfb\u52a0\u522b\u540d\uff0c\u65b9\u4fbf\u540e\u7eed\u64cd\u4f5c\u3002 \u5728where\u65b9\u6cd5\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u6307\u5b9a\u9700\u8981\u7b5b\u9009\u7684\u6761\u4ef6\u3002\u5728\u672c\u4f8b\u4e2d\uff0c\u6211\u4eec\u901a\u8fc7t1.id\u6765\u7b5b\u9009t1\u8868\u4e2did\u5b57\u6bb5\u7b49\u4e8e$id\u7684\u8bb0\u5f55\u3002 \u6211\u4eec\u53ef\u80fd\u9700\u8981\u8fdb\u884c\u66f4\u4e3a\u590d\u6742\u7684\u8fde\u63a5\u67e5\u8be2\uff0c\u5c06\u591a\u4e2a\u8868\u4e2d\u7684\u6570\u636e\u6574\u5408\u5728\u4e00\u8d77\u8fdb\u884c\u7edf\u8ba1\u5206\u6790\u3002\u8fd9\u65f6\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528ThinkPHP\u63d0\u4f9b\u7684\u805a\u5408\u51fd\u6570\u6765\u8fdb\u884c\u8ba1\u7b97\u3002 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u4f8b\u5982\uff0c\u6211\u4eec\u8981\u7edf\u8ba1\u6bcf\u4e2a\u7528\u6237\u7684\u8ba2\u5355\u6570\u91cf\uff0c\u53ef\u4ee5\u4f7f\u7528\u5982\u4e0b\u8bed\u53e5\u8fdb\u884c\u67e5\u8be2\uff1a Db::table(&#8216;user&#8217;) &nbsp;&nbsp;&nbsp;&nbsp;-&amp;gt;alias(&#8216;u&#8217;) &nbsp;&nbsp;&nbsp;&nbsp;-&amp;gt;join(&#8216;order&nbsp;o&#8217;,&nbsp;&#8216;u.id&nbsp;=&nbsp;o.user_id&#8217;) &nbsp;&nbsp;&nbsp;&nbsp;-&amp;gt;field(&#8216;u.*,&nbsp;COUNT(o.id)&nbsp;as&nbsp;order_num&#8217;) &nbsp;&nbsp;&nbsp;&nbsp;-&amp;gt;group(&#8216;u.id&#8217;) &nbsp;&nbsp;&nbsp;&nbsp;-&amp;gt;select(); \u767b\u5f55\u540e\u590d\u5236 \u5728\u4e0a\u8ff0\u8bed\u53e5\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u4e86COUNT\u51fd\u6570\u6765\u7edf\u8ba1order\u8868\u4e2d\u6bcf\u4e2a\u7528\u6237\u7684\u8ba2\u5355\u6570\u91cf\uff0c\u5e76\u4f7f\u7528group\u65b9\u6cd5\u5c06\u7ed3\u679c\u6309\u7167u.id\u8fdb\u884c\u5206\u7ec4\u3002 \u9664\u6b64\u4e4b\u5916\uff0c\u6211\u4eec\u8fd8\u53ef\u4ee5\u4f7f\u7528HAVING\u6761\u4ef6\u8fdb\u884c\u66f4\u8fdb\u4e00\u6b65\u7684\u7b5b\u9009\u3002\u4f8b\u5982\uff0c\u6211\u4eec\u8981\u7b5b\u9009\u51fa\u8ba2\u5355\u6570\u91cf\u5927\u4e8e\u7b49\u4e8e5\u7684\u7528\u6237\uff0c\u53ef\u4ee5\u4f7f\u7528\u5982\u4e0b\u8bed\u53e5\uff1a Db::table(&#8216;user&#8217;) &nbsp;&nbsp;&nbsp;&nbsp;-&amp;gt;alias(&#8216;u&#8217;) &nbsp;&nbsp;&nbsp;&nbsp;-&amp;gt;join(&#8216;order&nbsp;o&#8217;,&nbsp;&#8216;u.id&nbsp;=&nbsp;o.user_id&#8217;) &nbsp;&nbsp;&nbsp;&nbsp;-&amp;gt;field(&#8216;u.*,&nbsp;COUNT(o.id)&nbsp;as&nbsp;order_num&#8217;) &nbsp;&nbsp;&nbsp;&nbsp;-&amp;gt;group(&#8216;u.id&#8217;) &nbsp;&nbsp;&nbsp;&nbsp;-&amp;gt;having(&#8216;order_num&nbsp;&amp;gt;=&nbsp;5&#8217;) &nbsp;&nbsp;&nbsp;&nbsp;-&amp;gt;select(); \u767b\u5f55\u540e\u590d\u5236 \u5728\u4e0a\u8ff0\u8bed\u53e5\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u4e86HAVING\u6761\u4ef6\u6765\u7b5b\u9009\u51fa\u8ba2\u5355\u6570\u91cf\u5927\u4e8e\u7b49\u4e8e5\u7684\u7528\u6237\u3002 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