Oops, got it. Count(*) includes the rowcount of tables that inherit from the table queried? I wasn't counting on that.
On Wed, May 8, 2013 at 4:44 PM, Tobias Larsen <tobiasl@xxxxxxx> wrote:
This is a small, but weird problem. Completely regular table :- requesting count in pgadmin shows 3124448 rows- running SELECT count(*) via the query tool returns 5997620Why is there a difference? There's nothing remotely remarkable about the table.I've run a full database VACUUM just to be certainI've run VACUUM ANALYZE on that specific tableDatabase version is 9.1 (x64) on windowsverbose output from vacuum is----------------------------------------------------------------------------------------------INFO: vacuuming "public.<tablename>"INFO: index "<tablename>_pkey" now contains 3124448 row versions in 12233 pagesDETAIL: 0 index row versions were removed.0 index pages have been deleted, 0 are currently reusable.CPU 0.09s/0.00u sec elapsed 0.09 sec.INFO: index "<tablename>_character_id" now contains 3124448 row versions in 14898 pagesDETAIL: 0 index row versions were removed.0 index pages have been deleted, 0 are currently reusable.CPU 0.10s/0.00u sec elapsed 0.10 sec.INFO: index "<tablename>_index" now contains 3124448 row versions in 14694 pagesDETAIL: 0 index row versions were removed.0 index pages have been deleted, 0 are currently reusable.CPU 0.07s/0.03u sec elapsed 0.10 sec.INFO: index "<tablename>_key_idx" now contains 3124448 row versions in 23154 pagesDETAIL: 0 index row versions were removed.0 index pages have been deleted, 0 are currently reusable.CPU 0.12s/0.04u sec elapsed 0.16 sec.INFO: "<tablename>": found 0 removable, 0 nonremovable row versions in 0 out of 104149 pagesDETAIL: 0 dead row versions cannot be removed yet.There were 0 unused item pointers.0 pages are entirely empty.CPU 0.40s/0.07u sec elapsed 0.50 sec.INFO: analyzing "public.<tablename>"INFO: "<tablename>": scanned 30000 of 104149 pages, containing 900000 live rows and 0 dead rows; 30000 rows in sample, 3124454 estimated total rowsINFO: analyzing "public.<tablename>" inheritance treeINFO: "<tablename>": scanned 15628 of 104149 pages, containing 468840 live rows and 0 dead rows; 15628 rows in sample, 3124451 estimated total rowsINFO: "archive_<tablename>": scanned 14372 of 95773 pages, containing 431160 live rows and 0 dead rows; 14372 rows in sample, 2873175 estimated total rowsQuery returned successfully with no result in 2611 ms.----------------------------------------------------------------------------------------------...So it would seem that PGAdmin is correct, but why am I getting the wrong number from SELECT Count(*)?
