{"id":25228,"date":"2024-11-21T11:23:44","date_gmt":"2024-11-21T03:23:44","guid":{"rendered":"https:\/\/fwq.ai\/blog\/25228\/"},"modified":"2024-11-21T11:23:44","modified_gmt":"2024-11-21T03:23:44","slug":"%e6%b7%b1%e5%85%a5%e6%8e%a2%e8%ae%a8laravel%e4%b8%adtake%e5%92%8climit%e7%9a%84%e4%b8%8d%e5%90%8c%e4%b9%8b%e5%a4%84","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/25228\/","title":{"rendered":"\u6df1\u5165\u63a2\u8ba8Laravel\u4e2dtake\u548climit\u7684\u4e0d\u540c\u4e4b\u5904"},"content":{"rendered":"

\"\u6df1\u5165\u63a2\u8ba8Laravel\u4e2dtake\u548climit\u7684\u4e0d\u540c\u4e4b\u5904\u63d2\u56fe\"<\/p>\n

\u5728Laravel\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u4f1a\u7528\u5230\u4e00\u4e9b\u65b9\u6cd5\u6765\u9650\u5236\u67e5\u8be2\u7ed3\u679c\u7684\u6570\u91cf\uff0c\u5176\u4e2d\u5305\u62ectake\u548climit\u4e24\u4e2a\u65b9\u6cd5\u3002\u867d\u7136\u5b83\u4eec\u90fd\u53ef\u4ee5\u7528\u6765\u9650\u5236\u67e5\u8be2\u7ed3\u679c\u7684\u6570\u91cf\uff0c\u4f46\u5b83\u4eec\u4e4b\u95f4\u786e\u5b9e\u6709\u4e00\u4e9b\u7ec6\u5fae\u7684\u533a\u522b\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u5c06\u6df1\u5165\u63a2\u8ba8take\u548climit\u5728Laravel\u4e2d\u7684\u4e0d\u540c\u4e4b\u5904\uff0c\u5e76\u901a\u8fc7\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u6765\u52a0\u4ee5\u8bf4\u660e\u3002<\/p>\n

\u9996\u5148\uff0c\u8ba9\u6211\u4eec\u6765\u770b\u4e00\u4e0btake\u65b9\u6cd5\u3002take\u65b9\u6cd5\u662fEloquent\u7684\u4e00\u90e8\u5206\uff0c\u901a\u5e38\u7528\u4e8e\u4ece\u6570\u636e\u5e93\u4e2d\u83b7\u53d6\u6307\u5b9a\u6570\u91cf\u7684\u8bb0\u5f55\u3002take\u65b9\u6cd5\u63a5\u53d7\u4e00\u4e2a\u6574\u6570\u53c2\u6570\uff0c\u8868\u793a\u8981\u83b7\u53d6\u7684\u8bb0\u5f55\u6570\u91cf\u3002\u4f8b\u5982\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u4ee3\u7801\u6765\u83b7\u53d6\u6570\u636e\u5e93\u4e2d\u7684\u524d5\u6761\u8bb0\u5f55\uff1a<\/p>\n

$users = AppModelsUser::take(5)-&gt;get();<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528take(5)\u6765\u83b7\u53d6\u524d5\u6761\u7528\u6237\u8bb0\u5f55\u3002\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0ctake\u65b9\u6cd5\u4f1a\u76f4\u63a5\u5728\u67e5\u8be2\u4e2d\u6dfb\u52a0LIMIT\u5b50\u53e5\uff0c\u4ece\u800c\u9650\u5236\u67e5\u8be2\u7ed3\u679c\u7684\u6570\u91cf\u3002<\/p>\n
\u4e0etake\u65b9\u6cd5\u4e0d\u540c\uff0climit\u65b9\u6cd5\u662fSQL\u7684\u4e00\u90e8\u5206\uff0c\u53ef\u7528\u4e8e\u5728\u67e5\u8be2\u4e2d\u8bbe\u7f6e\u9650\u5236\u6761\u4ef6\u3002\u5728Laravel\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7limit\u65b9\u6cd5\u6765\u5b9e\u73b0\u540c\u6837\u7684\u529f\u80fd\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n
$users = AppModelsUser::limit(5)-&gt;get();<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528limit(5)\u6765\u8bbe\u7f6e\u67e5\u8be2\u7684\u9650\u5236\u6761\u4ef6\uff0c\u53ea\u83b7\u53d6\u524d5\u6761\u7528\u6237\u8bb0\u5f55\u3002\u4e0d\u540c\u4e8etake\u65b9\u6cd5\uff0climit\u65b9\u6cd5\u662f\u76f4\u63a5\u5728SQL\u8bed\u53e5\u4e2d\u6dfb\u52a0LIMIT\u5b50\u53e5\u6765\u5b9e\u73b0\u9650\u5236\u3002<\/p>\n
\u867d\u7136take\u548climit\u5728\u529f\u80fd\u4e0a\u6709\u6240\u91cd\u53e0\uff0c\u4f46\u5b83\u4eec\u4e4b\u95f4\u7684\u4e00\u4e2a\u91cd\u8981\u533a\u522b\u5728\u4e8etake\u65b9\u6cd5\u4f1a\u81ea\u52a8\u5c06\u7ed3\u679c\u8f6c\u6362\u4e3aEloquent\u96c6\u5408\uff0c\u800climit\u65b9\u6cd5\u4e0d\u4f1a\u505a\u8fd9\u4e2a\u8f6c\u6362\u3002\u8fd9\u610f\u5473\u7740\u4f7f\u7528take\u65b9\u6cd5\u83b7\u53d6\u7684\u7ed3\u679c\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528Eloquent\u96c6\u5408\u4e2d\u7684\u65b9\u6cd5\uff0c\u800c\u4f7f\u7528limit\u65b9\u6cd5\u83b7\u53d6\u7684\u7ed3\u679c\u5219\u9700\u8981\u624b\u52a8\u5c06\u5176\u8f6c\u6362\u4e3a\u96c6\u5408\u624d\u80fd\u4f7f\u7528\u8fd9\u4e9b\u65b9\u6cd5\u3002<\/p>\n
\u53e6\u5916\uff0c\u5f53\u4f7f\u7528\u5173\u8054\u5173\u7cfb\u65f6\uff0ctake\u65b9\u6cd5\u53ef\u4ee5\u8fde\u8d2f\u5730\u94fe\u5f0f\u8c03\u7528\uff0c\u4ee5\u9650\u5236\u5173\u8054\u6a21\u578b\u7684\u6570\u91cf\u3002\u4f8b\u5982\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u4ee3\u7801\u6765\u83b7\u53d6\u6bcf\u4e2a\u7528\u6237\u7684\u524d3\u6761\u8bc4\u8bba\uff1a<\/p>\n
$comments = AppModelsUser::with('comments')-&gt;take(3)-&gt;get();<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528take(3)\u6765\u9650\u5236\u6bcf\u4e2a\u7528\u6237\u6240\u5173\u8054\u7684\u8bc4\u8bba\u6570\u91cf\u4e3a3\u6761\u3002\u8fd9\u4e2a\u529f\u80fd\u5728\u5904\u7406\u590d\u6742\u7684\u5173\u8054\u5173\u7cfb\u67e5\u8be2\u65f6\u975e\u5e38\u6709\u7528\u3002<\/p>\n
\u603b\u7684\u6765\u8bf4\uff0ctake\u548climit\u65b9\u6cd5\u5728Laravel\u4e2d\u90fd\u5177\u6709\u9650\u5236\u67e5\u8be2\u7ed3\u679c\u6570\u91cf\u7684\u4f5c\u7528\uff0c\u4f46\u5b83\u4eec\u5728\u7ec6\u8282\u4e0a\u6709\u4e00\u4e9b\u4e0d\u540c\u3002take\u65b9\u6cd5\u662fEloquent\u7684\u4e00\u90e8\u5206\uff0c\u4f1a\u81ea\u52a8\u8f6c\u6362\u7ed3\u679c\u4e3a\u96c6\u5408\uff0c\u5e76\u4e14\u80fd\u591f\u8fde\u8d2f\u5730\u94fe\u5f0f\u8c03\u7528\uff1b\u800climit\u65b9\u6cd5\u662fSQL\u7684\u4e00\u90e8\u5206\uff0c\u9700\u8981\u624b\u52a8\u8f6c\u6362\u7ed3\u679c\u4e3a\u96c6\u5408\uff0c\u4f46\u53ef\u4ee5\u66f4\u76f4\u63a5\u5730\u8bbe\u7f6e\u67e5\u8be2\u9650\u5236\u6761\u4ef6\u3002\u6839\u636e\u9700\u6c42\u7684\u4e0d\u540c\uff0c\u6211\u4eec\u53ef\u4ee5\u7075\u6d3b\u5730\u9009\u62e9\u4f7f\u7528take\u6216\u8005limit\u6765\u5b9e\u73b0\u6211\u4eec\u7684\u67e5\u8be2\u9700\u6c42\u3002<\/p>\n
\u4ee5\u4e0a\u5c31\u662f\u6df1\u5165\u63a2\u8ba8Laravel\u4e2dtake\u548climit\u7684\u4e0d\u540c\u4e4b\u5904\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":"
\u5728Laravel\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u4f1a\u7528\u5230\u4e00\u4e9b\u65b9\u6cd5\u6765\u9650\u5236\u67e5\u8be2\u7ed3\u679c\u7684\u6570\u91cf\uff0c\u5176\u4e2d\u5305\u62ectake\u548climit\u4e24\u4e2a\u65b9\u6cd5\u3002\u867d\u7136\u5b83\u4eec\u90fd\u53ef\u4ee5\u7528\u6765\u9650\u5236\u67e5\u8be2\u7ed3\u679c\u7684\u6570\u91cf\uff0c\u4f46\u5b83\u4eec\u4e4b\u95f4\u786e\u5b9e\u6709\u4e00\u4e9b\u7ec6\u5fae\u7684\u533a\u522b\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u5c06\u6df1\u5165\u63a2\u8ba8take\u548climit\u5728Laravel\u4e2d\u7684\u4e0d\u540c\u4e4b\u5904\uff0c\u5e76\u901a\u8fc7\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u6765\u52a0\u4ee5\u8bf4\u660e\u3002 \u9996\u5148\uff0c\u8ba9\u6211\u4eec\u6765\u770b\u4e00\u4e0btake\u65b9\u6cd5\u3002take\u65b9\u6cd5\u662fEloquent\u7684\u4e00\u90e8\u5206\uff0c\u901a\u5e38\u7528\u4e8e\u4ece\u6570\u636e\u5e93\u4e2d\u83b7\u53d6\u6307\u5b9a\u6570\u91cf\u7684\u8bb0\u5f55\u3002take\u65b9\u6cd5\u63a5\u53d7\u4e00\u4e2a\u6574\u6570\u53c2\u6570\uff0c\u8868\u793a\u8981\u83b7\u53d6\u7684\u8bb0\u5f55\u6570\u91cf\u3002\u4f8b\u5982\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u4ee3\u7801\u6765\u83b7\u53d6\u6570\u636e\u5e93\u4e2d\u7684\u524d5\u6761\u8bb0\u5f55\uff1a $users = AppModelsUser::take(5)-&gt;get(); \u767b\u5f55\u540e\u590d\u5236 \u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528take(5)\u6765\u83b7\u53d6\u524d5\u6761\u7528\u6237\u8bb0\u5f55\u3002\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0ctake\u65b9\u6cd5\u4f1a\u76f4\u63a5\u5728\u67e5\u8be2\u4e2d\u6dfb\u52a0LIMIT\u5b50\u53e5\uff0c\u4ece\u800c\u9650\u5236\u67e5\u8be2\u7ed3\u679c\u7684\u6570\u91cf\u3002 \u4e0etake\u65b9\u6cd5\u4e0d\u540c\uff0climit\u65b9\u6cd5\u662fSQL\u7684\u4e00\u90e8\u5206\uff0c\u53ef\u7528\u4e8e\u5728\u67e5\u8be2\u4e2d\u8bbe\u7f6e\u9650\u5236\u6761\u4ef6\u3002\u5728Laravel\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7limit\u65b9\u6cd5\u6765\u5b9e\u73b0\u540c\u6837\u7684\u529f\u80fd\uff0c\u5982\u4e0b\u6240\u793a\uff1a $users = AppModelsUser::limit(5)-&gt;get(); \u767b\u5f55\u540e\u590d\u5236 \u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528limit(5)\u6765\u8bbe\u7f6e\u67e5\u8be2\u7684\u9650\u5236\u6761\u4ef6\uff0c\u53ea\u83b7\u53d6\u524d5\u6761\u7528\u6237\u8bb0\u5f55\u3002\u4e0d\u540c\u4e8etake\u65b9\u6cd5\uff0climit\u65b9\u6cd5\u662f\u76f4\u63a5\u5728SQL\u8bed\u53e5\u4e2d\u6dfb\u52a0LIMIT\u5b50\u53e5\u6765\u5b9e\u73b0\u9650\u5236\u3002 \u867d\u7136take\u548climit\u5728\u529f\u80fd\u4e0a\u6709\u6240\u91cd\u53e0\uff0c\u4f46\u5b83\u4eec\u4e4b\u95f4\u7684\u4e00\u4e2a\u91cd\u8981\u533a\u522b\u5728\u4e8etake\u65b9\u6cd5\u4f1a\u81ea\u52a8\u5c06\u7ed3\u679c\u8f6c\u6362\u4e3aEloquent\u96c6\u5408\uff0c\u800climit\u65b9\u6cd5\u4e0d\u4f1a\u505a\u8fd9\u4e2a\u8f6c\u6362\u3002\u8fd9\u610f\u5473\u7740\u4f7f\u7528take\u65b9\u6cd5\u83b7\u53d6\u7684\u7ed3\u679c\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528Eloquent\u96c6\u5408\u4e2d\u7684\u65b9\u6cd5\uff0c\u800c\u4f7f\u7528limit\u65b9\u6cd5\u83b7\u53d6\u7684\u7ed3\u679c\u5219\u9700\u8981\u624b\u52a8\u5c06\u5176\u8f6c\u6362\u4e3a\u96c6\u5408\u624d\u80fd\u4f7f\u7528\u8fd9\u4e9b\u65b9\u6cd5\u3002 \u53e6\u5916\uff0c\u5f53\u4f7f\u7528\u5173\u8054\u5173\u7cfb\u65f6\uff0ctake\u65b9\u6cd5\u53ef\u4ee5\u8fde\u8d2f\u5730\u94fe\u5f0f\u8c03\u7528\uff0c\u4ee5\u9650\u5236\u5173\u8054\u6a21\u578b\u7684\u6570\u91cf\u3002\u4f8b\u5982\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u4ee3\u7801\u6765\u83b7\u53d6\u6bcf\u4e2a\u7528\u6237\u7684\u524d3\u6761\u8bc4\u8bba\uff1a $comments = AppModelsUser::with(‘comments’)-&gt;take(3)-&gt;get(); 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