diff options
Diffstat (limited to 'src/include/nodes/relation.h')
| -rw-r--r-- | src/include/nodes/relation.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/include/nodes/relation.h b/src/include/nodes/relation.h index 78b03e024e8..f6592697e44 100644 --- a/src/include/nodes/relation.h +++ b/src/include/nodes/relation.h @@ -46,6 +46,20 @@ typedef struct QualCost Cost per_tuple; /* per-evaluation cost */ } QualCost; +/* + * Costing aggregate function execution requires these statistics about + * the aggregates to be executed by a given Agg node. Note that transCost + * includes the execution costs of the aggregates' input expressions. + */ +typedef struct AggClauseCosts +{ + int numAggs; /* total number of aggregate functions */ + int numOrderedAggs; /* number that use DISTINCT or ORDER BY */ + QualCost transCost; /* total per-input-row execution costs */ + Cost finalCost; /* total costs of agg final functions */ + Size transitionSpace; /* space for pass-by-ref transition data */ +} AggClauseCosts; + /*---------- * PlannerGlobal |