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Diffstat (limited to 'src/backend/optimizer/util/clauses.c')
| -rw-r--r-- | src/backend/optimizer/util/clauses.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/backend/optimizer/util/clauses.c b/src/backend/optimizer/util/clauses.c index 663ffe05352..1688310b805 100644 --- a/src/backend/optimizer/util/clauses.c +++ b/src/backend/optimizer/util/clauses.c @@ -647,6 +647,16 @@ get_agg_clause_costs_walker(Node *node, get_agg_clause_costs_context *context) /* Use average width if aggregate definition gave one */ if (aggtransspace > 0) avgwidth = aggtransspace; + else if (aggtransfn == F_ARRAY_APPEND) + { + /* + * If the transition function is array_append(), it'll use an + * expanded array as transvalue, which will occupy at least + * ALLOCSET_SMALL_INITSIZE and possibly more. Use that as the + * estimate for lack of a better idea. + */ + avgwidth = ALLOCSET_SMALL_INITSIZE; + } else { /* |