Search Postgresql Archives

Re: Taking lot time

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

 



When this thread started you said you where selecting 20 rows.

Yes.
Which is correct 20 rows or columns and if columns how many rows?
Yes,I did selected 20 columns from two tables.


Where are you measuring this time?
Here is the query plan,
http://explain.depesz.com/s/EeYT


Any Help appreactiated !

On Thu, Nov 26, 2015 at 12:04 AM, Adrian Klaver <adrian.klaver@xxxxxxxxxxx> wrote:
On 11/25/2015 07:46 AM, Ramesh T wrote:

First, please take a look at this:

https://en.wikipedia.org/wiki/Posting_style


Hi All,
         9.3 version using pgadmin3

Query like below,20 columns fetching
  SELECT col1,col2,col3,...col.20

When this thread started you said you where selecting 20 rows.
Which is correct 20 rows or columns and if columns how many rows?

                                    FROM detail i,
                                     adjdetail ia,
                                   WHERE i.trans_id = ia.detail_id AND
(i.event = ANY (ARRAY[21, 22, 3, 5]))
created indexes on  where clause declared columns.

Taking a lot of time above ..?any help apprectiated !.

A lot of time being?

Where are you measuring this time?
Remember populating a GUI with lots of data can take time.


I have total 4 gb ram,i changed below in postgres.conf

shared_buffers--1024mb
temp_bufffers=8mb
work_mem=200mb
maintanace_work_mem=500mb
seq_page_cost = 1.0
random_page_cost = 5.0
effective_cache_size = 1024MB



On Wed, Nov 18, 2015 at 11:12 PM, Adrian Klaver
<adrian.klaver@xxxxxxxxxxx <mailto:adrian.klaver@xxxxxxxxxxx>> wrote:

    On 11/17/2015 04:18 AM, Ramesh T wrote:

        the query is big it's selecting 20 rows from two table like i
        mentioned
        above exaplain analyze

        what should i do..?any help


    Please do not top post.

    I must be missing a post, as I see no explanation of what the query
    is doing.


        On Wed, Nov 4, 2015 at 4:27 AM, Adrian Klaver
        <adrian.klaver@xxxxxxxxxxx <mailto:adrian.klaver@xxxxxxxxxxx>
        <mailto:adrian.klaver@xxxxxxxxxxx
        <mailto:adrian.klaver@xxxxxxxxxxx>>> wrote:

             On 11/03/2015 06:42 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..


             And the query is?


             --
             Adrian Klaver
        adrian.klaver@xxxxxxxxxxx <mailto:adrian.klaver@xxxxxxxxxxx>
        <mailto:adrian.klaver@xxxxxxxxxxx
        <mailto:adrian.klaver@xxxxxxxxxxx>>




    --
    Adrian Klaver
    adrian.klaver@xxxxxxxxxxx <mailto:adrian.klaver@xxxxxxxxxxx>




--
Adrian Klaver
adrian.klaver@xxxxxxxxxxx


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Postgresql Jobs]     [Postgresql Admin]     [Postgresql Performance]     [Linux Clusters]     [PHP Home]     [PHP on Windows]     [Kernel Newbies]     [PHP Classes]     [PHP Books]     [PHP Databases]     [Postgresql & PHP]     [Yosemite]
  Powered by Linux