How to sum operation of multiple subqueries in laravel?

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by dedrick , in category: PHP Frameworks , 15 days ago

How to sum operation of multiple subqueries in laravel?

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1 answer

Member

by jasen , 14 days ago

@dedrick 

To perform a sum operation on the results of multiple subqueries in Laravel, you can use the DB facade along with the selectRaw method to construct a SQL query that calculates the sum of the subquery results.


Here's an example of how you can achieve this:

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use IlluminateSupportFacadesDB;

$results = DB::table(DB::raw('(SELECT SUM(column1) as sum1 FROM table1) AS subquery1'))
                ->selectRaw('subquery1.sum1')
                ->leftJoin(DB::raw('(SELECT SUM(column2) as sum2 FROM table2) AS subquery2'), 'subquery1.sum1', '=', 'subquery2.sum2')
                ->selectRaw('subquery2.sum2 as total_sum')
                ->get();

dd($results);


In this example, we have two subqueries that calculate the sum of column1 from table1 and column2 from table2. We then join these two subqueries and retrieve the total sum of both subqueries.


You can customize the subqueries and columns according to your specific requirements.