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| author | Alexander Korotkov <akorotkov@postgresql.org> | 2024-03-26 01:53:34 +0200 |
|---|---|---|
| committer | Alexander Korotkov <akorotkov@postgresql.org> | 2024-03-26 01:53:34 +0200 |
| commit | 10baee0c95d15f70c0c2b0e52640651777ce806d (patch) | |
| tree | dbcab2122f56629f6b467730978854720ea5e6fd /src/backend/executor | |
| parent | c6f09e188bbc5df8fd96682ba19e96f19d137eb2 (diff) | |
| download | postgresql-10baee0c95d15f70c0c2b0e52640651777ce806d.tar.gz postgresql-10baee0c95d15f70c0c2b0e52640651777ce806d.zip | |
Add comments on some MinimalTupleSlots methods usage
Discussion: https://postgr.es/m/CALT9ZEHNeagO5PLb4Nv9J_ZaCtp%2BArdVmbSLc0RHUzx_RPAa4w%40mail.gmail.com
Author: Pavel Borisov
Diffstat (limited to 'src/backend/executor')
| -rw-r--r-- | src/backend/executor/execTuples.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/backend/executor/execTuples.c b/src/backend/executor/execTuples.c index 7a7c7860416..b5477922404 100644 --- a/src/backend/executor/execTuples.c +++ b/src/backend/executor/execTuples.c @@ -549,6 +549,10 @@ tts_minimal_getsomeattrs(TupleTableSlot *slot, int natts) slot_deform_heap_tuple(slot, mslot->tuple, &mslot->off, natts); } +/* + * MinimalTupleTableSlots never provide system attributes. We generally + * shouldn't get here, but provide a user-friendly message if we do. + */ static Datum tts_minimal_getsysattr(TupleTableSlot *slot, int attnum, bool *isnull) { @@ -561,6 +565,11 @@ tts_minimal_getsysattr(TupleTableSlot *slot, int attnum, bool *isnull) return 0; /* silence compiler warnings */ } +/* + * Within MinimalTuple abstraction transaction information is unavailable. + * We generally shouldn't get here, but provide a user-friendly message if + * we do. + */ static bool tts_minimal_is_current_xact_tuple(TupleTableSlot *slot) { |