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- replaced fully fetched queries into one with sub query
- sub query still not the highest performing query but better the above
->whereIn('id', function ($query) {
$query->select('team_id')
->from('team_members');
})
Before 400k rows analyzed
select distinct `users`.*
from `users`
where `id` in
(select `user_id`
from `team_members`
where `team_members`.`team_id` in (?, ?, ?)
)
and `users`.`deleted_at` is null
After After 19k rows
select distinct `users`.*
from `users`
where `id` in
(select `user_id`
from `team_members`
where `team_members`.`team_id` in
(select `teams`.`id`
from `teams`
where exists
(select *
from `users`
inner join `team_members` on `users`.`id` = `team_members`.`user_id`
where `teams`.`id` = `team_members`.`team_id`
and `user_id` = ? and `users`.`deleted_at` is null
) and `teams`.`deleted_at` is null)
)
and `users`.`deleted_at` is null
explain
[
{
"id": 1,
"select_type": "SIMPLE",
"table": "team_members",
"partitions": null,
"type": "range",
"possible_keys": "team_members_team_id_sub_team_id_user_id_unique,team_members_team_id_index,team_members_user_id_index",
"key": "team_members_team_id_sub_team_id_user_id_unique",
"key_len": "4",
"ref": null,
"rows": 386448,
"filtered": 100,
"Extra": "Using where; Using index; Using temporary"
}
]
explain
[
{
"id": 1,
"select_type": "PRIMARY",
"table": "users",
"partitions": null,
"type": "ALL",
"possible_keys": "PRIMARY",
"key": null,
"key_len": null,
"ref": null,
"rows": 15456,
"filtered": 10,
"Extra": "Using where; Using temporary"
},
{
"id": 1,
"select_type": "PRIMARY",
"table": "<subquery2>",
"partitions": null,
"type": "eq_ref",
"possible_keys": "<auto_key>",
"key": "<auto_key>",
"key_len": "4",
"ref": "dreamwell_production.users.id",
"rows": 1,
"filtered": 100,
"Extra": "Distinct"
},
{
"id": 2,
"select_type": "MATERIALIZED",
"table": "teams",
"partitions": null,
"type": "ALL",
"possible_keys": "PRIMARY",
"key": null,
"key_len": null,
"ref": null,
"rows": 1863,
"filtered": 10,
"Extra": "Using where; Distinct"
},
{
"id": 2,
"select_type": "MATERIALIZED",
"table": "team_members",
"partitions": null,
"type": "ref",
"possible_keys": "team_members_team_id_sub_team_id_user_id_unique,team_members_team_id_index,team_members_user_id_index",
"key": "team_members_team_id_sub_team_id_user_id_unique",
"key_len": "4",
"ref": "dreamwell_production.teams.id",
"rows": 664,
"filtered": 100,
"Extra": "Using index; Distinct"
},
{
"id": 4,
"select_type": "DEPENDENT SUBQUERY",
"table": "team_members",
"partitions": null,
"type": "ref",
"possible_keys": "team_members_team_id_sub_team_id_user_id_unique,team_members_team_id_index,team_members_user_id_index",
"key": "team_members_team_id_sub_team_id_user_id_unique",
"key_len": "4",
"ref": "dreamwell_production.teams.id",
"rows": 664,
"filtered": 100,
"Extra": "Using index"
},
{
"id": 4,
"select_type": "DEPENDENT SUBQUERY",
"table": "users",
"partitions": null,
"type": "eq_ref",
"possible_keys": "PRIMARY",
"key": "PRIMARY",
"key_len": "4",
"ref": "dreamwell_production.team_members.user_id",
"rows": 1,
"filtered": 10,
"Extra": "Using where"
}
]
Not the best solution, but better than previous