alabtechnosoft
1. select * from `users` where not exists (select * from `orders` where `users`.`id` = `orders`.`user_id`);
2. select * from `orders` where `orderstatus_id` = 5 and `created_at` between '2022-01-01 00:00:00' and '2022-01-27 00:00:00';
3. Not able to do this with SQL, if someone has a solution, please post here...