Hi,
I have a query that involves an external sort:
-> Sort (cost=13662680.01..13850498.48 rows=75127389 width=16)
(actual time=980098.397..1021411.862 rows=74181544 loops=1)
Sort Key: (ROW(account_id, (purchase_time)::date))
Sort Method: external merge Disk: 3118088kB
Buffers: shared hit=1568637 read=1327223,
temp read=389763 written=389763
What puzzles me is that this happens even when I set work_mem to 50GB in
the session.
Why does it still use the external merge?
The query runs on a streaming replica if that matters.
Torsten
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