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Diffstat (limited to 'src/backend/optimizer/path/costsize.c')
| -rw-r--r-- | src/backend/optimizer/path/costsize.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/backend/optimizer/path/costsize.c b/src/backend/optimizer/path/costsize.c index eb653cf3bec..b35acb7bdcf 100644 --- a/src/backend/optimizer/path/costsize.c +++ b/src/backend/optimizer/path/costsize.c @@ -3627,6 +3627,15 @@ cost_qual_eval_walker(Node *node, cost_qual_eval_context *context) cpu_operator_cost; } } + else if (IsA(node, MinMaxExpr) || + IsA(node, SQLValueFunction) || + IsA(node, XmlExpr) || + IsA(node, CoerceToDomain) || + IsA(node, NextValueExpr)) + { + /* Treat all these as having cost 1 */ + context->total.per_tuple += cpu_operator_cost; + } else if (IsA(node, CurrentOfExpr)) { /* Report high cost to prevent selection of anything but TID scan */ |