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All versions of PostgreSQL. Add an additional version-specific tag like [postgresql-13] if that context is relevant.

0 votes
3 answers
1k views

How can I improve the performance of this query?

I've tried to add an index on records.status, but the cardinality is so low (<5 unique values) a seq scan was still used. The query: select distinct "events".* from "events" inner join (select "rec …
rodney757's user avatar
2 votes
1 answer
1k views

Slow PostgreSQL query analysis, low memory usage, high writes

I'm having issues with the following query in PostgreSQL 10.5. Using pg_activity while the query runs show that only ~400 MB of RAM is used. …
rodney757's user avatar