Laravel 使用 skip and take 限制查询

Question

我正在尝试构建一个使用 skip() 和 take() 函数的查询，由于某种原因它一直在末尾添加 offset 0 而不是它应该是 LIMIT 0,0

代码：

    $dbSearch = new SchoolInfo;
    $dbSearch = $dbSearch->where(function($query) use($search) {

        $query->where('school_name', 'LIKE', '%'.$search.'%')
            ->orWhere('address_1', 'LIKE', '%'.$search.'%')
            ->orWhere('address_2', 'LIKE', '%'.$search.'%')
            ->orWhere('address_3', 'LIKE', '%'.$search.'%')
            ->orWhere('address_4', 'LIKE', '%'.$search.'%')
            ->orWhere('county', 'LIKE', '%'.$search.'%')
            ->orWhere('postcode', 'LIKE', '%'.$search.'%')
            ->orWhere('head_teacher_email', 'LIKE', '%'.$search.'%')
            ->orWhere('head_teacher_first', 'LIKE', '%'.$search.'%')
            ->orWhere('head_teacher_last', 'LIKE', '%'.$search.'%');
    });
    $results = $dbSearch
        ->skip($startat)
        ->take($startat)
        ->orderBy('school_name', 'ASC')
        ->get();

这是我得到的错误

SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'offset 0' at line 1 (SQL: select * from `school_info` where (`school_name` LIKE %ok% or `address_1` LIKE %ok% or `address_2` LIKE %ok% or `address_3` LIKE %ok% or `address_4` LIKE %ok% or `county` LIKE %ok% or `postcode` LIKE %ok% or `head_teacher_email` LIKE %ok% or `head_teacher_first` LIKE %ok% or `head_teacher_last` LIKE %ok%) order by `school_name` asc offset 0)","file":"\/var\/www\/html\/globalrecruit\/vendor\/laravel\/framework\/src\/Illuminate\/Database\/Connection.php

Answer 1

当您执行 skip(n) 时，它会向查询添加一个 offset n，如您所见。当您执行 take(n) 时，它会向查询添加 n 的限制。当构造实际查询时，限制将覆盖偏移量。

但是 take(0)，你说你想要返回零结果。 Eloquent 认为您不想应用限制，所以没有。相反，只剩下偏移量，它本身并不构成有效查询。

确保 take() 值大于零，应该没问题。 :)

（注意：联合查询并不完全正确，但这完全是另一回事。）

Laravel 使用 skip and take 限制查询

Laravel using skip and take limiting query

php

sql

laravel

sql-limit