And now when i select ALL users it generates too many sql queries like this:
(orm/mysql) SELECT `id`, `username`, `database` FROM `users`
(orm/mysql) SELECT `id`, `user_id`, `country`, `city`, `street` FROM `address` WHERE `user_id` = 1
(orm/mysql) SELECT `id`, `user_id`, `country`, `city`, `street` FROM `address` WHERE `user_id` = 2
(orm/mysql) SELECT `id`, `user_id`, `country`, `city`, `street` FROM `address` WHERE `user_id` = 3
(orm/mysql) SELECT `id`, `user_id`, `country`, `city`, `street` FROM `address` WHERE `user_id` = 4
(orm/mysql) SELECT `id`, `user_id`, `country`, `city`, `street` FROM `address` WHERE `user_id` = 5
(orm/mysql) SELECT `id`, `user_id`, `country`, `city`, `street` FROM `address` WHERE `user_id` = 6
So basicly For every user in USERS creates a separate query from ADDRESS. Imagine if we have a milion users. This query will be soo slow.
Can this be optimized with 2 queries maybe like:
(orm/mysql) SELECT `id`, `username`, `database` FROM `users`
SELECT `id`, `user_id`, `country`, `city`, `street` FROM `address`
WHERE `user_id` IN (1,2,3,4,5,6)
Or maybe with 1 query like:
SELECT `id`, `username`, `database` FROM `users`
LEFT JOIN `address` ON `address.user_id` = `users.id`
Hello guys, Lets, for example, see the current case. We have the following databases:
And now when i select ALL users it generates too many sql queries like this:
So basicly For every user in USERS creates a separate query from ADDRESS. Imagine if we have a milion users. This query will be soo slow.
Can this be optimized with 2 queries maybe like:
Or maybe with 1 query like:
Thanks!