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| author | David Rowley <drowley@postgresql.org> | 2021-11-24 23:29:56 +1300 |
|---|---|---|
| committer | David Rowley <drowley@postgresql.org> | 2021-11-24 23:29:56 +1300 |
| commit | c2dc7b9e15039ce90c0a631ff291feb81d2c8051 (patch) | |
| tree | 07729c689c4f0a51b2dccd4d679edee283c194a6 /src/backend/nodes/readfuncs.c | |
| parent | 0e681fa458750b08a5c7885820320fb85cd9ddf1 (diff) | |
Flush Memoize cache when non-key parameters change, take 2
It's possible that a subplan below a Memoize node contains a parameter
from above the Memoize node. If this parameter changes then cache entries
may become out-dated due to the new parameter value.
Previously Memoize was mistakenly not aware of this. We fix this here by
flushing the cache whenever a parameter that's not part of the cache
key changes.
Bug: #17213
Reported by: Elvis Pranskevichus
Author: David Rowley
Discussion: https://postgr.es/m/17213-988ed34b225a2862@postgresql.org
Backpatch-through: 14, where Memoize was added
Diffstat (limited to 'src/backend/nodes/readfuncs.c')
| -rw-r--r-- | src/backend/nodes/readfuncs.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/backend/nodes/readfuncs.c b/src/backend/nodes/readfuncs.c index 3bcac709d3b..4c537c30e0b 100644 --- a/src/backend/nodes/readfuncs.c +++ b/src/backend/nodes/readfuncs.c @@ -2231,6 +2231,7 @@ _readMemoize(void) READ_BOOL_FIELD(singlerow); READ_BOOL_FIELD(binary_mode); READ_UINT_FIELD(est_entries); + READ_BITMAPSET_FIELD(keyparamids); READ_DONE(); } |