diff options
Diffstat (limited to 'src/include/nodes/relation.h')
| -rw-r--r-- | src/include/nodes/relation.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/include/nodes/relation.h b/src/include/nodes/relation.h index 1c88a79a217..0a5187cef3b 100644 --- a/src/include/nodes/relation.h +++ b/src/include/nodes/relation.h @@ -529,6 +529,7 @@ typedef struct RelOptInfo List *lateral_vars; /* LATERAL Vars and PHVs referenced by rel */ Relids lateral_referencers; /* rels that reference me laterally */ List *indexlist; /* list of IndexOptInfo */ + List *statlist; /* list of StatisticExtInfo */ BlockNumber pages; /* size estimates derived from pg_class */ double tuples; double allvisfrac; @@ -668,6 +669,24 @@ typedef struct ForeignKeyOptInfo List *rinfos[INDEX_MAX_KEYS]; } ForeignKeyOptInfo; +/* + * StatisticExtInfo + * Information about extended statistics for planning/optimization + * + * This contains information about which columns are covered by the + * statistics (stakeys), which options were requested while adding the + * statistics (*_enabled), and which kinds of statistics were actually + * built and are available for the optimizer (*_built). + */ +typedef struct StatisticExtInfo +{ + NodeTag type; + + Oid statOid; /* OID of the statistics row */ + RelOptInfo *rel; /* back-link to index's table */ + char kind; /* statistic kind of this entry */ + Bitmapset *keys; /* attnums of the columns covered */ +} StatisticExtInfo; /* * EquivalenceClasses |