database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-26 01:22:12 +03:00
Code Activity

Save calculated transitionSpace in Agg node.

Browse Source 
This will be useful in the upcoming Hash Aggregation work to improve
estimates for hash table sizing.

Discussion: https://postgr.es/m/37091115219dd522fd9ed67333ee8ed1b7e09443.camel%40j-davis.com
This commit is contained in:
Jeff Davis
2020-02-27 10:46:58 -08:00
parent e537aed61d
commit c11cb17dc5
5 changed files with 14 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
src/include/nodes/pathnodes.h
View File

@ -1663,6 +1663,7 @@ typedef struct AggPath
AggStrategy aggstrategy; /* basic strategy, see nodes.h */
AggSplit aggsplit; /* agg-splitting mode, see nodes.h */
double numGroups; /* estimated number of groups in input */
Size transitionSpace; /* for pass-by-ref transition data */
List *groupClause; /* a list of SortGroupClause's */
List *qual; /* quals (HAVING quals), if any */
} AggPath;
@ -1700,6 +1701,7 @@ typedef struct GroupingSetsPath
AggStrategy aggstrategy; /* basic strategy */
List *rollups; /* list of RollupData */
List *qual; /* quals (HAVING quals), if any */
Size transitionSpace; /* for pass-by-ref transition data */
} GroupingSetsPath;
/*