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| author | Tom Lane | 2021-07-06 22:10:11 +0000 |
|---|---|---|
| committer | Tom Lane | 2021-07-06 22:10:20 +0000 |
| commit | 955b3e0f9269639fb916cee3dea37aee50b82df0 (patch) | |
| tree | 395cf4010f26d0e3f2383f9ad724cb683135acce /src/interfaces/libpq/fe-auth.c | |
| parent | 5798ca529935698ab976780565fb2b4d8d34d810 (diff) | |
Allow CustomScan providers to say whether they support projections.
Previously, all CustomScan providers had to support projections,
but there may be cases where this is inconvenient. Add a flag
bit to say if it's supported.
Important item for the release notes: this is non-backwards-compatible
since the default is now to assume that CustomScan providers can't
project, instead of assuming that they can. It's fail-soft, but could
result in visible performance penalties due to adding unnecessary
Result nodes.
Sven Klemm, reviewed by Aleksander Alekseev; some cosmetic fiddling
by me.
Discussion: https://postgr.es/m/CAMCrgp1kyakOz6c8aKhNDJXjhQ1dEjEnp+6KNT3KxPrjNtsrDg@mail.gmail.com
Diffstat (limited to 'src/interfaces/libpq/fe-auth.c')
0 files changed, 0 insertions, 0 deletions