{"id":23551,"date":"2024-11-21T08:11:25","date_gmt":"2024-11-21T00:11:25","guid":{"rendered":"https:\/\/fwq.ai\/blog\/23551\/"},"modified":"2024-11-21T08:11:25","modified_gmt":"2024-11-21T00:11:25","slug":"laravel%e5%bc%80%e5%8f%91%ef%bc%9a%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8laravel-query-builder%e8%bf%9b%e8%a1%8c%e5%a4%8d%e6%9d%82%e6%9f%a5%e8%af%a2%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/23551\/","title":{"rendered":"Laravel\u5f00\u53d1\uff1a\u5982\u4f55\u4f7f\u7528Laravel Query Builder\u8fdb\u884c\u590d\u6742\u67e5\u8be2\uff1f"},"content":{"rendered":"

query builder\u662f\u4e00\u79cd\u6d41\u884c\u7684orm\uff08\u5bf9\u8c61\u5173\u7cfb\u6620\u5c04\uff09\u5de5\u5177\uff0c\u7528\u4e8e\u7b80\u5316\u6570\u636e\u5e93\u64cd\u4f5c\u548c\u67e5\u8be2\u3002\u5b83\u63d0\u4f9b\u4e86\u4e00\u4e2a\u65b9\u4fbf\u7684\u3001\u9762\u5411\u5bf9\u8c61\u7684\u8bed\u6cd5\uff0c\u4f7f\u5f97\u5f00\u53d1\u4eba\u5458\u53ef\u4ee5\u8f7b\u677e\u5730\u7f16\u5199\u590d\u6742\u7684sql\u67e5\u8be2\uff0c\u800c\u4e0d\u9700\u8981\u624b\u52a8\u7f16\u5199sql\u4ee3\u7801\u3002<\/p>\n

\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u5c06\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528Laravel Query Builder\u8fdb\u884c\u590d\u6742\u67e5\u8be2\u64cd\u4f5c\u3002\u5305\u62ec\u57fa\u7840\u67e5\u8be2\u3001\u805a\u5408\u67e5\u8be2\u3001\u8fde\u8868\u67e5\u8be2\u3001\u5206\u7ec4\u548c\u6392\u5e8f\u7b49\u3002<\/p>\n

\u57fa\u7840\u67e5\u8be2<\/p>\n

\u9996\u5148\uff0c\u57fa\u7840\u67e5\u8be2\u662f\u6307\u76f4\u63a5\u5bf9\u5355\u5f20\u8868\u8fdb\u884c\u64cd\u4f5c\u3002\u67e5\u8be2\u64cd\u4f5c\u6700\u57fa\u672c\u7684\u5c31\u662fselect\uff0c\u901a\u8fc7\u67e5\u627e\u6587\u6863\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u5f0f\u5bf9\u6570\u636e\u8fdb\u884c\u67e5\u8be2\uff1a<\/p>\n

$users = DB::table('users')-&gt;select('name', 'email as user_email')-&gt;get();<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u5176\u4e2d\uff0c\u7b2c\u4e00\u4e2a\u53c2\u6570\u6307\u5b9a\u4e86\u8981\u67e5\u8be2\u7684\u8868\u540d\uff0cselect\u51fd\u6570\u4e2d\u7684\u53c2\u6570\u6307\u5b9a\u4e86\u67e5\u8be2\u7684\u7ed3\u679c\u5217\uff0cget\u51fd\u6570\u83b7\u53d6\u67e5\u8be2\u7ed3\u679c\u3002<\/p>\n
\u805a\u5408\u67e5\u8be2<\/p>\n
\u805a\u5408\u67e5\u8be2\u662f\u5bf9\u6570\u636e\u8fdb\u884c\u6c47\u603b\u7684\u67e5\u8be2\uff0c\u4f8b\u5982COUNT\u3001SUM\u3001AVG\u3001MAX\u3001MIN\u7b49\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528Laravel Query Builder\u7684\u805a\u5408\u51fd\u6570\u6765\u5b8c\u6210\u8fd9\u4e9b\u64cd\u4f5c\uff1a<\/p>\n
$usersCount = DB::table('users')-&gt;count();\n$usersMaxId = DB::table('users')-&gt;max('id');\n$usersMinId = DB::table('users')-&gt;min('id');\n$usersSumSalary = DB::table('users')-&gt;sum('salary');\n$usersAvgSalary = DB::table('users')-&gt;avg('salary');<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4ee5\u4e0a\u793a\u4f8b\u4e2d\uff0c\u5206\u522b\u5bf9users\u8868\u8fdb\u884c\u4e86\u8ba1\u6570\u3001\u6700\u5927\u503c\u3001\u6700\u5c0f\u503c\u3001\u6c42\u548c\u548c\u5e73\u5747\u503c\u64cd\u4f5c\u3002<\/p>\n
\u8fde\u8868\u67e5\u8be2<\/p>\n
\u8fde\u8868\u67e5\u8be2\u662f\u7528\u4e8e\u4ece\u591a\u4e2a\u76f8\u5173\u8054\u7684\u8868\u4e2d\u68c0\u7d22\u6570\u636e\u7684\u5e38\u89c1\u64cd\u4f5c\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528join\u51fd\u6570\u6765\u8fde\u63a5\u4e24\u4e2a\u6216\u66f4\u591a\u7684\u8868\uff1a<\/p>\n
$results = DB::table('users')\n            -&gt;join('orders', 'users.id', '=', 'orders.user_id')\n            -&gt;select('users.name', 'orders.order_number')\n            -&gt;get();<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4ee5\u4e0a\u793a\u4f8b\u4e2d\uff0cjoin\u51fd\u6570\u4e2d\u7684\u7b2c\u4e00\u4e2a\u53c2\u6570\u662f\u8981\u52a0\u5165\u7684\u5176\u4ed6\u8868\u7684\u540d\u79f0\uff0c\u7b2c\u4e8c\u4e2a\u53c2\u6570\u662f\u4e24\u4e2a\u8868\u4e4b\u95f4\u7684\u8fde\u63a5\u6761\u4ef6\uff0c\u7b2c\u4e09\u4e2a\u53c2\u6570\u662f\u9009\u62e9\u7684\u7ed3\u679c\u5217\u3002<\/p>\n
\u5206\u7ec4\u548c\u6392\u5e8f<\/p>\n
\u5206\u7ec4\u548c\u6392\u5e8f\u662f\u5728\u67e5\u8be2\u7ed3\u679c\u4e0a\u8fdb\u884c\u7b5b\u9009\u548c\u6392\u5e8f\u7684\u64cd\u4f5c\u3002\u4f8b\u5982\uff0c\u6211\u4eec\u53ef\u4ee5\u6309\u7279\u5b9a\u5217\u7684\u503c\u5bf9\u7ed3\u679c\u8fdb\u884c\u6392\u5e8f\uff0c\u6216\u6309\u67d0\u4e2a\u5217\u8fdb\u884c\u5206\u7ec4\u3002Laravel Query Builder\u63d0\u4f9b\u4e86orderBy\u548cgroupBy\u51fd\u6570\u6765\u5b8c\u6210\u8fd9\u4e9b\u64cd\u4f5c\uff1a<\/p>\n
$users = DB::table('users')\n            -&gt;orderBy('name', 'asc')\n            -&gt;groupBy('gender')\n            -&gt;get();<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4ee5\u4e0a\u793a\u4f8b\u4e2d\uff0corderBy\u51fd\u6570\u7528\u4e8e\u6309\u540d\u79f0\u5347\u5e8f\u5bf9\u7ed3\u679c\u8fdb\u884c\u6392\u5e8f\uff0cgroupBy\u51fd\u6570\u7528\u4e8e\u6309gender\u5b57\u6bb5\u5bf9\u7ed3\u679c\u8fdb\u884c\u5206\u7ec4\u3002<\/p>\n
\u603b\u7ed3<\/p>\n
Laravel Query Builder\u662f\u4e00\u4e2a\u5341\u5206\u5f3a\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u8f7b\u677e\u3001\u9ad8\u6548\u5730\u5b8c\u6210\u590d\u6742\u67e5\u8be2\u64cd\u4f5c\u3002\u6211\u4eec\u5728\u9879\u76ee\u4e2d\u4f7f\u7528Laravel Query Builder\uff0c\u53ef\u4ee5\u907f\u514d\u624b\u5199\u590d\u6742\u7684SQL\u4ee3\u7801\u5e76\u4e14\u63d0\u9ad8\u5f00\u53d1\u6548\u7387\u3002\u638c\u63e1\u8fd9\u4e9b\u57fa\u672c\u64cd\u4f5c\uff0c\u53ef\u4ee5\u5927\u5927\u63d0\u9ad8\u6211\u4eec\u7684\u5f00\u53d1\u6548\u7387\u548c\u4ee3\u7801\u8d28\u91cf\u3002<\/p>\n
\u4ee5\u4e0a\u5c31\u662fLaravel\u5f00\u53d1\uff1a\u5982\u4f55\u4f7f\u7528Laravel Query Builder\u8fdb\u884c\u590d\u6742\u67e5\u8be2\uff1f\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":"
query builder\u662f\u4e00\u79cd\u6d41\u884c\u7684orm\uff08\u5bf9\u8c61\u5173\u7cfb\u6620\u5c04\uff09\u5de5\u5177\uff0c\u7528\u4e8e\u7b80\u5316\u6570\u636e\u5e93\u64cd\u4f5c\u548c\u67e5\u8be2\u3002\u5b83\u63d0\u4f9b\u4e86\u4e00\u4e2a\u65b9\u4fbf\u7684\u3001\u9762\u5411\u5bf9\u8c61\u7684\u8bed\u6cd5\uff0c\u4f7f\u5f97\u5f00\u53d1\u4eba\u5458\u53ef\u4ee5\u8f7b\u677e\u5730\u7f16\u5199\u590d\u6742\u7684sql\u67e5\u8be2\uff0c\u800c\u4e0d\u9700\u8981\u624b\u52a8\u7f16\u5199sql\u4ee3\u7801\u3002 \u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u5c06\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528Laravel Query Builder\u8fdb\u884c\u590d\u6742\u67e5\u8be2\u64cd\u4f5c\u3002\u5305\u62ec\u57fa\u7840\u67e5\u8be2\u3001\u805a\u5408\u67e5\u8be2\u3001\u8fde\u8868\u67e5\u8be2\u3001\u5206\u7ec4\u548c\u6392\u5e8f\u7b49\u3002 \u57fa\u7840\u67e5\u8be2 \u9996\u5148\uff0c\u57fa\u7840\u67e5\u8be2\u662f\u6307\u76f4\u63a5\u5bf9\u5355\u5f20\u8868\u8fdb\u884c\u64cd\u4f5c\u3002\u67e5\u8be2\u64cd\u4f5c\u6700\u57fa\u672c\u7684\u5c31\u662fselect\uff0c\u901a\u8fc7\u67e5\u627e\u6587\u6863\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u5f0f\u5bf9\u6570\u636e\u8fdb\u884c\u67e5\u8be2\uff1a $users = DB::table(‘users’)-&gt;select(‘name’, ’email as user_email’)-&gt;get(); \u767b\u5f55\u540e\u590d\u5236 \u5176\u4e2d\uff0c\u7b2c\u4e00\u4e2a\u53c2\u6570\u6307\u5b9a\u4e86\u8981\u67e5\u8be2\u7684\u8868\u540d\uff0cselect\u51fd\u6570\u4e2d\u7684\u53c2\u6570\u6307\u5b9a\u4e86\u67e5\u8be2\u7684\u7ed3\u679c\u5217\uff0cget\u51fd\u6570\u83b7\u53d6\u67e5\u8be2\u7ed3\u679c\u3002 \u805a\u5408\u67e5\u8be2 \u805a\u5408\u67e5\u8be2\u662f\u5bf9\u6570\u636e\u8fdb\u884c\u6c47\u603b\u7684\u67e5\u8be2\uff0c\u4f8b\u5982COUNT\u3001SUM\u3001AVG\u3001MAX\u3001MIN\u7b49\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528Laravel Query Builder\u7684\u805a\u5408\u51fd\u6570\u6765\u5b8c\u6210\u8fd9\u4e9b\u64cd\u4f5c\uff1a $usersCount = DB::table(‘users’)-&gt;count(); $usersMaxId = DB::table(‘users’)-&gt;max(‘id’); $usersMinId = DB::table(‘users’)-&gt;min(‘id’); $usersSumSalary = DB::table(‘users’)-&gt;sum(‘salary’); $usersAvgSalary = DB::table(‘users’)-&gt;avg(‘salary’); \u767b\u5f55\u540e\u590d\u5236 \u4ee5\u4e0a\u793a\u4f8b\u4e2d\uff0c\u5206\u522b\u5bf9users\u8868\u8fdb\u884c\u4e86\u8ba1\u6570\u3001\u6700\u5927\u503c\u3001\u6700\u5c0f\u503c\u3001\u6c42\u548c\u548c\u5e73\u5747\u503c\u64cd\u4f5c\u3002 \u8fde\u8868\u67e5\u8be2 \u8fde\u8868\u67e5\u8be2\u662f\u7528\u4e8e\u4ece\u591a\u4e2a\u76f8\u5173\u8054\u7684\u8868\u4e2d\u68c0\u7d22\u6570\u636e\u7684\u5e38\u89c1\u64cd\u4f5c\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528join\u51fd\u6570\u6765\u8fde\u63a5\u4e24\u4e2a\u6216\u66f4\u591a\u7684\u8868\uff1a $results = DB::table(‘users’) -&gt;join(‘orders’, ‘users.id’, ‘=’, ‘orders.user_id’) -&gt;select(‘users.name’, ‘orders.order_number’) -&gt;get(); \u767b\u5f55\u540e\u590d\u5236 \u4ee5\u4e0a\u793a\u4f8b\u4e2d\uff0cjoin\u51fd\u6570\u4e2d\u7684\u7b2c\u4e00\u4e2a\u53c2\u6570\u662f\u8981\u52a0\u5165\u7684\u5176\u4ed6\u8868\u7684\u540d\u79f0\uff0c\u7b2c\u4e8c\u4e2a\u53c2\u6570\u662f\u4e24\u4e2a\u8868\u4e4b\u95f4\u7684\u8fde\u63a5\u6761\u4ef6\uff0c\u7b2c\u4e09\u4e2a\u53c2\u6570\u662f\u9009\u62e9\u7684\u7ed3\u679c\u5217\u3002 \u5206\u7ec4\u548c\u6392\u5e8f \u5206\u7ec4\u548c\u6392\u5e8f\u662f\u5728\u67e5\u8be2\u7ed3\u679c\u4e0a\u8fdb\u884c\u7b5b\u9009\u548c\u6392\u5e8f\u7684\u64cd\u4f5c\u3002\u4f8b\u5982\uff0c\u6211\u4eec\u53ef\u4ee5\u6309\u7279\u5b9a\u5217\u7684\u503c\u5bf9\u7ed3\u679c\u8fdb\u884c\u6392\u5e8f\uff0c\u6216\u6309\u67d0\u4e2a\u5217\u8fdb\u884c\u5206\u7ec4\u3002Laravel Query Builder\u63d0\u4f9b\u4e86orderBy\u548cgroupBy\u51fd\u6570\u6765\u5b8c\u6210\u8fd9\u4e9b\u64cd\u4f5c\uff1a $users […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-23551","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/23551","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=23551"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/23551\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=23551"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=23551"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=23551"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}