is there any way to update the stats inside a transaction? what i have is something like:
select count(*) from foo; -> 0 begin; copy foo from '/tmp/foo'; -- about 100k rows -- run some queries on foo which perform horribly because the stats -- are way off (100k rows v. 0 rows) commit; it seems that you cannot run analyze inside a transaction: begin; analyze foo; ERROR: ANALYZE cannot run inside a BEGIN/END block i am using version 7.2.3. any work-a-rounds? should i try updating pg_statistic manually? On Fri, 31 Oct 2003, Josh Berkus wrote: > Among other things, ANALYZE tells postgres how many rows are in the table. So > if you add a PK constraint after loading 10 million rows without ANALYZE, > PostgreSQL is likely to think that there is only one row in the table ... and > choose a nested loop or some other really inefficient method of checking for > uniqueness. ---------------------------(end of broadcast)--------------------------- TIP 7: don't forget to increase your free space map settings
