In Laravel, you can use the DB facade to execute raw SQL queries and retrieve the result using various methods like select, pluck, and get. To execute a sum query, you can use the sum method, which is available on the DB facade. Here's an example of how to execute a sum query in...
laravel 版本是 lts 5.5 StudentLessonProgress::where('student_info_id',$student_info_id)->sum('total_left_class_num'); dayinsql语句如下: array:1 [▼ 0 => array:3 [▼ “query” => “select sum(total_left_class_num) as aggregate fromstudent_lesson_progresswherestudent_info_id= ?” ...
知识浅谈,CSDN签约讲师,CSDN博客专家,华为云云享专家,阿里云专家博主 擅长领域:全栈工程师、爬虫、ACM算法 公众号:知识浅谈 网站:vip.zsqt.cc ✅MybatisPlus结合groupby...实现分组和sum求和 这次使用的是LambdaQueryWrapper,使用QueryWra...
我知道你可以对这样的关系做一个withSum:但我喜欢在这上面附加一个where子句,就像这样(不起作用,但作为一个例子): $posts = Post::withSum('comments', 'votes', function (Builder $query) {$query- 浏览0提问于2021-08-06得票数 1 1回答 Laravel WithSum / WithCount关系没有带来结果 、、、 我正...
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在laravel中使用wherehas时从子查询中选择sum根据eloquent:withcount（）重写get（）上的$columnsselect()...
LaravelORM 中的 withSum , withAvg, withMax,withMin 的实现,Orm::withCount(['relationasrelation_sum'=>function($query){$query->select(DB::raw("sum(amount)asrelationsum"));}])...
Orm::withCount(['relation as relation_sum' =>function($query){ $query->select(DB::raw("sum(amount) as relationsum")); }])
laravel 版本是 lts 5.5 StudentLessonProgress::where('student_info_id', $student_info_id) ->sum('total_left_class_num'); 打印sql语句如下: array:1 [▼ 0 => array:3 [▼“query” => “select sum(total_left_class_num) as aggregate from student_lesson_progress where student_info_id ...
在laravel中使用wherehas时从子查询中选择sum根据eloquent:withcount（）重写get（）上的$columnsselect()...