diff options
Diffstat (limited to 'src/backend/access')
| -rw-r--r-- | src/backend/access/table/tableam.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/backend/access/table/tableam.c b/src/backend/access/table/tableam.c index e18a8f8250f..a56c5eceb14 100644 --- a/src/backend/access/table/tableam.c +++ b/src/backend/access/table/tableam.c @@ -24,6 +24,7 @@ #include "access/syncscan.h" #include "access/tableam.h" #include "access/xact.h" +#include "optimizer/optimizer.h" #include "optimizer/plancat.h" #include "port/pg_bitutils.h" #include "storage/bufmgr.h" @@ -740,6 +741,8 @@ table_block_relation_estimate_size(Relation rel, int32 *attr_widths, tuple_width += overhead_bytes_per_tuple; /* note: integer division is intentional here */ density = (usable_bytes_per_page * fillfactor / 100) / tuple_width; + /* There's at least one row on the page, even with low fillfactor. */ + density = clamp_row_est(density); } *tuples = rint(density * (double) curpages); |