John Davidson

Message:

hello there i am working on a project with 30000 records, i want to print all the records on the paper, but when excute the following command,it keeps on loading the data until it runs out of memory, keep in mind i am fetching data with three different tables using relations with user_id in common in all the tables, i want to optimize the query, so that i can print all the user records seamlessly

$users= \App\User::with(['withdarawals','deposits'])->get()->groupBy('id');

        dd($users);

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My Answer:
To optimize the query and prevent running out of memory, you can try the following approaches:

1. Use pagination: Instead of fetching all 30,000 records at once, you can paginate the results and fetch a limited number of records at a time. This will reduce the memory usage and improve performance.

Example:
php
$users = \App\User::with(['withdrawals', 'deposits'])->paginate(100); // Fetch 100 records at a time


2. Use select() to fetch only the necessary columns: Instead of fetching all columns from the database, you can specify the columns you need using the select() method. This will reduce the amount of data fetched and improve performance.

Example:
php
$users = \App\User::with(['withdrawals', 'deposits'])->select('id', 'name', 'email')->get();


3. Use eager loading with constraints: If you only need specific records based on certain conditions, you can use constraints in your eager loading to fetch only the necessary data.

Example:
php
$users = \App\User::with(['withdrawals' => function ($query) {
$query->where('amount', '>', 1000);
}, 'deposits'])->get();


By implementing these optimizations, you should be able to fetch and print all user records seamlessly without running out of memory.