diff options
Diffstat (limited to 'src/backend/commands/analyze.c')
| -rw-r--r-- | src/backend/commands/analyze.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/src/backend/commands/analyze.c b/src/backend/commands/analyze.c index ed0d4e6d4ff..7accb950eb1 100644 --- a/src/backend/commands/analyze.c +++ b/src/backend/commands/analyze.c @@ -307,7 +307,8 @@ do_analyze_rel(Relation onerel, VacuumParams *params, VacAttrStats **vacattrstats; AnlIndexData *indexdata; int targrows, - numrows; + numrows, + minrows; double totalrows, totaldeadrows; HeapTuple *rows; @@ -492,6 +493,16 @@ do_analyze_rel(Relation onerel, VacuumParams *params, } /* + * Look at extended statistics objects too, as those may define custom + * statistics target. So we may need to sample more rows and then build + * the statistics with enough detail. + */ + minrows = ComputeExtStatisticsRows(onerel, attr_cnt, vacattrstats); + + if (targrows < minrows) + targrows = minrows; + + /* * Acquire the sample rows */ rows = (HeapTuple *) palloc(targrows * sizeof(HeapTuple)); |