Re: Very slow query performance when using CTE

2025-04-03 Thread Chris Joysn
> CREATE STATISTICS st_simrun_component_metadata (dependencies) ON >> sim_run_id, key FROM sim_run_component_metadata; >> ANALYZE sim_run_component_metadata; >> >> When I run this query, no statistics are returned: >> >> SELECT m.* FROM pg_statistic_ext join pg_statistic_ext_data on (oid = >> stxoi

Re: Very slow query performance when using CTE

2025-04-03 Thread Michael Christofides
> > CREATE STATISTICS st_simrun_component_metadata (dependencies) ON > sim_run_id, key FROM sim_run_component_metadata; > ANALYZE sim_run_component_metadata; > > When I run this query, no statistics are returned: > > SELECT m.* FROM pg_statistic_ext join pg_statistic_ext_data on (oid = > stxoid), >

Re: Very slow query performance when using CTE

2025-04-01 Thread Renan Alves Fonseca
Chris Joysn writes: > Hello, > I have an issue when using CTEs. A query, which consists of multiple CTEs, > runs usually rather fast (~5s on my > environment). But it turned out that using one CTE can lead to execution > times of up to one minute. > That CTE is used two times within the query.

Re: Very slow query performance when using CTE

2025-04-01 Thread Tom Lane
Chris Joysn writes: > I have an issue when using CTEs. A query, which consists of multiple CTEs, > runs usually rather fast (~5s on my environment). But it turned out that > using one CTE can lead to execution times of up to one minute. > That CTE is used two times within the query. Try labeling