Tomas Vondra 4cad2534da Use CP_SMALL_TLIST for hash aggregate ... Commit 1f39bce021 added disk-based hash aggregation, which may spill incoming tuples to disk. It however did not request projection to make the tuples as narrow as possible, which may mean having to spill much more data than necessary (increasing I/O, pushing other stuff from page cache, etc.). This adds CP_SMALL_TLIST in places that may use hash aggregation - we do that only for AGG_HASHED. It's unnecessary for AGG_SORTED, because that either uses explicit Sort (which already does projection) or pre-sorted input (which does not need spilling to disk). Author: Tomas Vondra Reviewed-by: Jeff Davis Discussion: https://postgr.es/m/20200519151202.u2p2gpiawoaznsv2%40development		2020-05-31 14:43:13 +02:00
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postgres_fdw.out	Use CP_SMALL_TLIST for hash aggregate	2020-05-31 14:43:13 +02:00