{"id":23020,"date":"2024-11-21T14:16:59","date_gmt":"2024-11-21T06:16:59","guid":{"rendered":"https:\/\/fwq.ai\/blog\/23020\/"},"modified":"2024-11-21T14:16:59","modified_gmt":"2024-11-21T06:16:59","slug":"laravel-%e9%80%9a%e8%bf%87sql%e6%9f%a5%e8%af%a2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/23020\/","title":{"rendered":"laravel \u901a\u8fc7sql\u67e5\u8be2"},"content":{"rendered":"

laravel\u662f\u4e00\u4e2a\u6d41\u884c\u7684 php\u6846\u67b6\uff0c\u53ef\u4ee5\u8ba9\u5f00\u53d1\u4eba\u5458\u5feb\u901f\u6784\u5efa\u9ad8\u6548\u3001\u53ef\u6269\u5c55\u7684 web \u5e94\u7528\u7a0b\u5e8f\u3002\u5f53\u4f60\u9700\u8981\u4ece\u6570\u636e\u5e93\u4e2d\u67e5\u8be2\u6570\u636e\u65f6\uff0c\u5728laravel\u4e2d\u4f7f\u7528sql\u67e5\u8be2\u5f88\u5e38\u89c1\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u5728laravel\u4e2d\u6267\u884csql\u67e5\u8be2\u3002<\/p>\n

\u51c6\u5907\u5de5\u4f5c<\/h2>\n

\u5728\u5f00\u59cb\u5229\u7528Laravel\u6267\u884cSQL\u67e5\u8be2\u4e4b\u524d\uff0c\u6211\u4eec\u9700\u8981\u5148\u914d\u7f6e\u597d\u6570\u636e\u5e93\u8fde\u63a5\u4fe1\u606f\u3002\u5728Laravel\u4e2d\uff0c\u914d\u7f6e\u6570\u636e\u5e93\u8fde\u63a5\u4fe1\u606f\u5f88\u7b80\u5355\uff0c\u53ea\u9700\u8981\u6253\u5f00 .env\u6587\u4ef6\u5e76\u4fee\u6539\u4ee5\u4e0b\u4fe1\u606f\u5373\u53ef\uff1a<\/p>\n

DB_CONNECTION=mysql\nDB_HOST=127.0.0.1\nDB_PORT=3306\nDB_DATABASE=database_name\nDB_USERNAME=username\nDB_PASSWORD=password<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u6211\u4eec\u53ea\u9700\u8981\u4fee\u6539\u8fd9\u4e9b\u53c2\u6570\uff0cLaravel\u5c06\u4f1a\u81ea\u52a8\u8fde\u63a5\u5230\u6211\u4eec\u7684\u6570\u636e\u5e93\uff0c\u5e76\u4f7f\u7528\u6211\u4eec\u63d0\u4f9b\u7684\u53c2\u6570\u8fdb\u884c\u8fde\u63a5\u3002\u73b0\u5728\uff0c\u6211\u4eec\u5df2\u7ecf\u51c6\u5907\u597d\u5f00\u59cb\u6267\u884cSQL\u67e5\u8be2\u4e86\u3002<\/p>\n
\u6267\u884c\u67e5\u8be2<\/h2>\n
\u6709\u51e0\u79cd\u65b9\u6cd5\u53ef\u4ee5\u5728Laravel\u4e2d\u6267\u884cSQL\u67e5\u8be2\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u65b9\u6cd5\u3002<\/p>\n
\u4f7f\u7528 DB \u7c7b<\/h3>\n
Laravel\u7684DB\u7c7b\u63d0\u4f9b\u4e86\u4e00\u7cfb\u5217\u53ef\u7528\u4e8e\u6267\u884c SQL\u67e5\u8be2\u7684\u65b9\u6cd5\u3002\u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u5728\u6211\u4eec\u7684\u63a7\u5236\u5668\u6216\u6a21\u578b\u4e2d\u5f15\u5165DB\u7c7b\uff1a<\/p>\n
use IlluminateSupportFacadesDB;<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u4e00\u65e6\u6211\u4eec\u5f15\u5165\u4e86 DB \u7c7b\uff0c\u6211\u4eec\u5c31\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\u6765\u6267\u884c SQL \u67e5\u8be2\u3002<\/p>\n
\u67e5\u8be2<\/h4>\n
DB \u7c7b\u7684 select() \u65b9\u6cd5\u53ef\u4ee5\u7528\u4e8e\u67e5\u8be2\u6570\u636e\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff1a<\/p>\n
$data = DB::select('SELECT * FROM users');<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u67e5\u8be2\u4e86 users\u8868\u4e2d\u7684\u6240\u6709\u6570\u636e\uff0c\u5e76\u5c06\u7ed3\u679c\u5b58\u50a8\u5728 $data \u53d8\u91cf\u4e2d\u3002\u4f60\u8fd8\u53ef\u4ee5\u4f7f\u7528\u53c2\u6570\u6765\u52a8\u6001\u5730\u6784\u5efa\u67e5\u8be2\uff1a<\/p>\n
$id = 1;\n$data = DB::select('SELECT * FROM users WHERE id = ?', [$id]);<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u4e86\u4e00\u4e2a\u5360\u4f4d\u7b26 ?\u6765\u8868\u793a $id \u53c2\u6570\u7684\u4f4d\u7f6e\uff0c\u7136\u540e\u5c06\u8be5\u53c2\u6570\u4f20\u9012\u7ed9 select() \u65b9\u6cd5\u7684\u7b2c\u4e8c\u4e2a\u53c2\u6570\u3002<\/p>\n
\u63d2\u5165<\/h4>\n
DB \u7c7b\u7684 insert() \u65b9\u6cd5\u53ef\u4ee5\u7528\u4e8e\u63d2\u5165\u6570\u636e\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff1a<\/p>\n
$name = 'John Doe';\n$email = 'johndoe@example.com';\nDB::insert('INSERT INTO users (name, email) VALUES (?, ?)', [$name, $email]);<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5411 users \u8868\u4e2d\u63d2\u5165\u4e86\u4e00\u6761\u6570\u636e\u3002<\/p>\n
\u66f4\u65b0<\/h4>\n
DB \u7c7b\u7684 update() \u65b9\u6cd5\u53ef\u4ee5\u7528\u4e8e\u66f4\u65b0\u6570\u636e\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff1a<\/p>\n
$id = 1;\n$email = 'johndoe@example.com';\nDB::update('UPDATE users SET email = ? WHERE id = ?', [$email, $id]);<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5c06 users \u8868\u4e2d id \u4e3a1\u7684\u7528\u6237\u7684email\u5c5e\u6027\u66f4\u65b0\u4e3a johndoe@example.com\u3002<\/p>\n
\u5220\u9664<\/h4>\n
DB \u7c7b\u7684 delete() \u65b9\u6cd5\u53ef\u4ee5\u7528\u4e8e\u5220\u9664\u6570\u636e\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff1a<\/p>\n
$id = 1;\nDB::delete('DELETE FROM users WHERE id = ?', [$id]);<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5c06 users \u8868\u4e2did\u4e3a1\u7684\u7528\u6237\u5220\u9664\u3002<\/p>\n
\u4f7f\u7528 Query Builder<\/h3>\n
Laravel\u63d0\u4f9b\u4e86\u53e6\u4e00\u79cd\u6267\u884c SQL\u67e5\u8be2\u7684\u65b9\u5f0f\uff0c\u5373Query Builder\u3002Query Builder \u662f\u4e00\u79cd\u94fe\u5f0f\u67e5\u8be2\u8bed\u6cd5\uff0c\u53ef\u4ee5\u7528\u4e8e\u6784\u5efa\u590d\u6742\u7684\u67e5\u8be2\u8bed\u53e5\u3002<\/p>\n
\u67e5\u8be2<\/h4>\n
\u4ee5\u4e0b\u662f\u4f7f\u7528 Query Builder \u67e5\u8be2\u6570\u636e\u7684\u793a\u4f8b\uff1a<\/p>\n
$data = DB::table('users')-&gt;get();<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u67e5\u8be2\u4e86 users \u8868\u4e2d\u7684\u6240\u6709\u6570\u636e\uff0c\u5e76\u5c06\u7ed3\u679c\u5b58\u50a8\u5728 $data \u53d8\u91cf\u4e2d\u3002\u4f60\u8fd8\u53ef\u4ee5\u4f7f\u7528\u94fe\u5f0f\u65b9\u6cd5\u52a8\u6001\u5730\u6784\u5efa\u67e5\u8be2\uff1a<\/p>\n
$data = DB::table('users')\n-&gt;select('name', 'email')\n-&gt;where('id', '=', 1)\n-&gt;get();<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528 select() \u65b9\u6cd5\u9009\u62e9\u67e5\u8be2\u7ed3\u679c\u4e2d\u7684\u5217\uff0c\u4f7f\u7528 where() \u65b9\u6cd5\u6dfb\u52a0 WHERE \u5b50\u53e5\u3002<\/p>\n
\u63d2\u5165<\/h4>\n
\u4ee5\u4e0b\u662f\u4f7f\u7528 Query Builder \u63d2\u5165\u6570\u636e\u7684\u793a\u4f8b\uff1a<\/p>\n
$name = 'John Doe';\n$email = 'johndoe@example.com';\nDB::table('users')-&gt;insert([\n   'name' =&gt; $name,\n   'email' =&gt; $email\n]);<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5411 users \u8868\u4e2d\u63d2\u5165\u4e86\u4e00\u6761\u6570\u636e\u3002<\/p>\n
\u66f4\u65b0<\/h4>\n
\u4ee5\u4e0b\u662f\u4f7f\u7528 Query Builder \u66f4\u65b0\u6570\u636e\u7684\u793a\u4f8b\uff1a<\/p>\n
$email = 'johndoe@example.com';\nDB::table('users')\n   -&gt;where('id', 1)\n   -&gt;update(['email' =&gt; $email]);<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5c06 users \u8868\u4e2did\u4e3a1\u7684\u7528\u6237\u7684email\u5c5e\u6027\u66f4\u65b0\u4e3a johndoe@example.com\u3002<\/p>\n
\u5220\u9664<\/h4>\n
\u4ee5\u4e0b\u662f\u4f7f\u7528 Query Builder \u5220\u9664\u6570\u636e\u7684\u793a\u4f8b\uff1a<\/p>\n
DB::table('users')-&gt;where('id', 1)-&gt;delete();<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5c06 users \u8868\u4e2did\u4e3a1\u7684\u7528\u6237\u5220\u9664\u3002<\/p>\n
\u603b\u7ed3<\/h2>\n
\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u4ecb\u7ecd\u4e86\u5982\u4f55\u5728Laravel\u4e2d\u6267\u884cSQL\u67e5\u8be2\u3002\u4f7f\u7528DB\u7c7b\u6216Query Builder\uff0c\u6211\u4eec\u53ef\u4ee5\u8f7b\u677e\u5730\u67e5\u8be2\u3001\u63d2\u5165\u3001\u66f4\u65b0\u548c\u5220\u9664\u6570\u636e\u3002\u4f7f\u7528Laravel\u7684\u8fd9\u4e9b\u529f\u80fd\uff0c\u53ef\u4ee5\u8ba9\u6211\u4eec\u66f4\u52a0\u9ad8\u6548\u3001\u53ef\u9760\u7684\u6784\u5efa Web \u5e94\u7528\u7a0b\u5e8f\u3002<\/p>\n
\u4ee5\u4e0a\u5c31\u662flaravel \u901a\u8fc7sql\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":"
laravel\u662f\u4e00\u4e2a\u6d41\u884c\u7684 php\u6846\u67b6\uff0c\u53ef\u4ee5\u8ba9\u5f00\u53d1\u4eba\u5458\u5feb\u901f\u6784\u5efa\u9ad8\u6548\u3001\u53ef\u6269\u5c55\u7684 web \u5e94\u7528\u7a0b\u5e8f\u3002\u5f53\u4f60\u9700\u8981\u4ece\u6570\u636e\u5e93\u4e2d\u67e5\u8be2\u6570\u636e\u65f6\uff0c\u5728laravel\u4e2d\u4f7f\u7528sql\u67e5\u8be2\u5f88\u5e38\u89c1\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u5728laravel\u4e2d\u6267\u884csql\u67e5\u8be2\u3002 \u51c6\u5907\u5de5\u4f5c \u5728\u5f00\u59cb\u5229\u7528Laravel\u6267\u884cSQL\u67e5\u8be2\u4e4b\u524d\uff0c\u6211\u4eec\u9700\u8981\u5148\u914d\u7f6e\u597d\u6570\u636e\u5e93\u8fde\u63a5\u4fe1\u606f\u3002\u5728Laravel\u4e2d\uff0c\u914d\u7f6e\u6570\u636e\u5e93\u8fde\u63a5\u4fe1\u606f\u5f88\u7b80\u5355\uff0c\u53ea\u9700\u8981\u6253\u5f00 .env\u6587\u4ef6\u5e76\u4fee\u6539\u4ee5\u4e0b\u4fe1\u606f\u5373\u53ef\uff1a DB_CONNECTION=mysql DB_HOST=127.0.0.1 DB_PORT=3306 DB_DATABASE=database_name DB_USERNAME=username DB_PASSWORD=password \u767b\u5f55\u540e\u590d\u5236 \u6211\u4eec\u53ea\u9700\u8981\u4fee\u6539\u8fd9\u4e9b\u53c2\u6570\uff0cLaravel\u5c06\u4f1a\u81ea\u52a8\u8fde\u63a5\u5230\u6211\u4eec\u7684\u6570\u636e\u5e93\uff0c\u5e76\u4f7f\u7528\u6211\u4eec\u63d0\u4f9b\u7684\u53c2\u6570\u8fdb\u884c\u8fde\u63a5\u3002\u73b0\u5728\uff0c\u6211\u4eec\u5df2\u7ecf\u51c6\u5907\u597d\u5f00\u59cb\u6267\u884cSQL\u67e5\u8be2\u4e86\u3002 \u6267\u884c\u67e5\u8be2 \u6709\u51e0\u79cd\u65b9\u6cd5\u53ef\u4ee5\u5728Laravel\u4e2d\u6267\u884cSQL\u67e5\u8be2\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u65b9\u6cd5\u3002 \u4f7f\u7528 DB \u7c7b Laravel\u7684DB\u7c7b\u63d0\u4f9b\u4e86\u4e00\u7cfb\u5217\u53ef\u7528\u4e8e\u6267\u884c SQL\u67e5\u8be2\u7684\u65b9\u6cd5\u3002\u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u5728\u6211\u4eec\u7684\u63a7\u5236\u5668\u6216\u6a21\u578b\u4e2d\u5f15\u5165DB\u7c7b\uff1a use IlluminateSupportFacadesDB; \u767b\u5f55\u540e\u590d\u5236 \u4e00\u65e6\u6211\u4eec\u5f15\u5165\u4e86 DB \u7c7b\uff0c\u6211\u4eec\u5c31\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\u6765\u6267\u884c SQL \u67e5\u8be2\u3002 \u67e5\u8be2 DB \u7c7b\u7684 select() \u65b9\u6cd5\u53ef\u4ee5\u7528\u4e8e\u67e5\u8be2\u6570\u636e\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff1a $data = DB::select(‘SELECT * FROM users’); \u767b\u5f55\u540e\u590d\u5236 \u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u67e5\u8be2\u4e86 users\u8868\u4e2d\u7684\u6240\u6709\u6570\u636e\uff0c\u5e76\u5c06\u7ed3\u679c\u5b58\u50a8\u5728 $data \u53d8\u91cf\u4e2d\u3002\u4f60\u8fd8\u53ef\u4ee5\u4f7f\u7528\u53c2\u6570\u6765\u52a8\u6001\u5730\u6784\u5efa\u67e5\u8be2\uff1a $id = 1; $data = DB::select(‘SELECT * FROM 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-23020","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/23020","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=23020"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/23020\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=23020"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=23020"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=23020"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}