On 11/3/2015 6:42 AM, Ramesh T wrote:
> I have a Query it taking a lot of time to fetch results
> so,explain query gave
>
> "Hash Join (cost=55078.00..202405.95 rows=728275 width=418)"
> " Hash Cond: (itd.tran_id = iad._adj__id)"
> " -> Seq Scan on inv_detail itd (cost=0.00..40784.18 rows=731029
> width=95)"
> " Filter: (event_type = ANY ('{21,22,3,5}'::integer[]))"
> " -> Hash (cost=20590.78..20590.78 rows=610978 width=331)"
> " -> Seq Scan on inv_adj iad (cost=0.00..20590.78
> rows=610978 width=331)"
>
> Can you Please let me know wt happen in query..?wt should i do..
assuming those estimates are correct, it appears to be doing a
sequential scan of 610000 rows 731000 times.
--
john r pierce, recycling bits in santa cruz
