diff options
| -rw-r--r-- | src/backend/statistics/extended_stats.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/src/backend/statistics/extended_stats.c b/src/backend/statistics/extended_stats.c index e6423eb628c..0ad029f5cf4 100644 --- a/src/backend/statistics/extended_stats.c +++ b/src/backend/statistics/extended_stats.c @@ -74,14 +74,15 @@ BuildRelationExtStatistics(Relation onerel, double totalrows, MemoryContext cxt; MemoryContext oldcxt; + pg_stext = heap_open(StatisticExtRelationId, RowExclusiveLock); + stats = fetch_statentries_for_relation(pg_stext, RelationGetRelid(onerel)); + + /* memory context for building each statistics object */ cxt = AllocSetContextCreate(CurrentMemoryContext, "BuildRelationExtStatistics", ALLOCSET_DEFAULT_SIZES); oldcxt = MemoryContextSwitchTo(cxt); - pg_stext = heap_open(StatisticExtRelationId, RowExclusiveLock); - stats = fetch_statentries_for_relation(pg_stext, RelationGetRelid(onerel)); - foreach(lc, stats) { StatExtEntry *stat = (StatExtEntry *) lfirst(lc); @@ -128,12 +129,17 @@ BuildRelationExtStatistics(Relation onerel, double totalrows, /* store the statistics in the catalog */ statext_store(pg_stext, stat->statOid, ndistinct, dependencies, stats); - } - heap_close(pg_stext, RowExclusiveLock); + /* free the data used for building this statistics object */ + MemoryContextReset(cxt); + } MemoryContextSwitchTo(oldcxt); MemoryContextDelete(cxt); + + list_free(stats); + + heap_close(pg_stext, RowExclusiveLock); } /* |