Re: Slow query - possible bug?

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



chris smith wrote:

1.6secs isn't too bad on 4.3mill rows...

How many entries are there for that date range?
1.7 secs /is/ good - it typically takes 5 or 6 seconds, which isn't so good. My question is 'why does the planner choose such a bizarre range request when both elements of the 'between' are identical? :)'

If I replace the
(allocation0_."Date" between '2006-06-09 00:00:00.000000' and '2006-06-09 00:00:00.000000')

with

allocation0_."Date" ='2006-04-09 00:00:00.000000'

then the query comes back in a few milliseconds (as I'd expect :) - and yup I've been using different dates for each test to avoid the query being cached.

For ref, there are typically 35000 rows per date :)

Cheers,
Gavin.



[Postgresql General]     [Postgresql PHP]     [PHP Users]     [PHP Home]     [PHP on Windows]     [Kernel Newbies]     [PHP Classes]     [PHP Books]     [PHP Databases]     [Yosemite]

  Powered by Linux