Make nodeSort.c use Datum sorts for single column sorts Datum sorts can be significantly faster than tuple sorts, especially when the data type being sorted is a pass-by-value type. Something in the region of 50-70% performance improvements appear to be possible.
Just in case there's any confusion; the Datum sort is only used when the targetlist of the Sort node contains a single column, not when there's a single column in the sort key and multiple items in the target list. Author: Ronan Dunklau Reviewed-by: James Coleman, David Rowley, Ranier Vilela, Hou Zhijie Tested-by: John Naylor Discussion: https://postgr.es/m/3177670.itZtoPt7T5@aivenronan Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/91e9e89dccdfdf4216953d3d8f5515dcdef177fb Modified Files -------------- src/backend/executor/nodeSort.c | 106 ++++++++++++++++++++++++++++++---------- src/include/nodes/execnodes.h | 1 + 2 files changed, 82 insertions(+), 25 deletions(-)
