Re: Why could different data in a table be processed with different performance?

FYI, posting an intermediate update on the issue. I disabled index scans to keep existing order, and copied part of the "slow" range into another table (3M rows in 2.2 GB table + 17 GB toast). I was able to reproduce slow readings from this copy. Then I performed CLUSTER of the copy using PK and e

does work_mem is used on temp tables?

Hi, Does the work mem is used when I do sorts or hash operations on temp tables ? Or the temp_buffer that is allocated at the beginning of the session is used for it ? At one of our apps, the app create a temp table and run on it some operations (joins,sum,count,avg ) and so on.. I saw in the pos