如何"SET SQL_BIG_SELECTS = 1"在Laravel Join语句中 [英] How to "SET SQL_BIG_SELECTS=1" in Laravel Join statement
本文介绍了如何"SET SQL_BIG_SELECTS = 1"在Laravel Join语句中的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
当我尝试执行6个联接的数据库查询时,出现以下错误消息:
when i try to execute DB query with 6 Joins i get following error message:
SQLSTATE[42000]: Syntax error or access violation: 1104 The SELECT would examine more than MAX_JOIN_SIZE rows; check your WHERE and use SET SQL_BIG_SELECTS=1 or SET MAX_JOIN_SIZE=# if the SELECT is okay
$results = DB::table('table_1')
->join('table_2', 'table_1.id', '=', 'table_2.id')
...
我的问题是: 如何在laravel查询中设置"SET SQL_BIG_SELECTS = 1"?
推荐答案
我找到了一个解决方案:)
i found a solution :)
在app/config/database.php
in app/config/database.php
更改以下内容:
'mysql' => [
'driver' => 'mysql',
'host' => env('DB_HOST', 'localhost'),
'database' => env('DB_DATABASE', 'forge'),
'username' => env('DB_USERNAME', 'forge'),
'password' => env('DB_PASSWORD', ''),
'charset' => 'utf8',
'collation' => 'utf8_unicode_ci',
'prefix' => '',
'strict' => false,
],
收件人:
'mysql' => [
'driver' => 'mysql',
'host' => env('DB_HOST', 'localhost'),
'database' => env('DB_DATABASE', 'forge'),
'username' => env('DB_USERNAME', 'forge'),
'password' => env('DB_PASSWORD', ''),
'charset' => 'utf8',
'collation' => 'utf8_unicode_ci',
'prefix' => '',
'options' => array(
PDO::MYSQL_ATTR_INIT_COMMAND => 'SET SESSION SQL_BIG_SELECTS=1',
),
'strict' => false,
],
我添加了选项"数组并定义了SQL_BIG_SELECTS
I added the "options" array and define SQL_BIG_SELECTS
就这样,我们可以按照需要的任何方式配置PDO!
Thats it, we can configure PDO in any way we need!
希望这对其他人有用;)
Hope this is usefull to other ;)
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