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Looking for ways to optimize sql query with inner join
My join query seems to be using the right index but is still slow. I am not sure where the issue lies and would appreciate any tips. The query and its explain is as follows:SELECT events.*,...
View ArticleAnswer by Evan Carroll for Looking for ways to optimize sql query with inner...
Your statistics are way off.In the scan on index_event_subscriptions_on_user_id_group_id it estimates 4 rows returned, yet 7295 are returned.WHERE (event_subscriptions.user_id = 456) AND...
View ArticleAnswer by jjanes for Looking for ways to optimize sql query with inner join
The estimateThe estimate on event_subscriptions is way off. My guess is that almost every subscription by user_id = 456 also satisfies group_id IN (123, 321, 222, 333), while PostgreSQL's planner...
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