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| author | David Rowley <drowley@postgresql.org> | 2021-07-22 14:03:19 +1200 |
|---|---|---|
| committer | David Rowley <drowley@postgresql.org> | 2021-07-22 14:03:19 +1200 |
| commit | 91e9e89dccdfdf4216953d3d8f5515dcdef177fb (patch) | |
| tree | a5e65de17f8beddb4c3edda646183ec31795e201 /src/backend/jit/llvm/llvmjit_inline.cpp | |
| parent | 7fa1e1ef741964eeb50f33d7c72622658bb7e5f4 (diff) | |
| download | postgresql-91e9e89dccdfdf4216953d3d8f5515dcdef177fb.tar.gz postgresql-91e9e89dccdfdf4216953d3d8f5515dcdef177fb.zip | |
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
Diffstat (limited to 'src/backend/jit/llvm/llvmjit_inline.cpp')
0 files changed, 0 insertions, 0 deletions