Re: Taking lot time - Mailing list pgsql-general

On 11/25/2015 07:46 AM, Ramesh T wrote:

Hi All,
         9.3 version using pgadmin3

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

Realized my previous post was not really helpful. What I should have said is below.

To get a useful answer you will need to supply a complete(from one run of the query) set of information for the problem you are experiencing.

So:

1) The complete definitions for the tables involved in the query, including FKs, triggers, etc.

2) The query you are running.

3) The EXPLAIN ANALYZE for said query

4) The number of rows returned from the query.

5) The procedure you used to getting the time value and where it was applied(psql, pgAdmin, etc).

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@aklaver.com <mailto:adrian.klaver@aklaver.com>> 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@aklaver.com <mailto:adrian.klaver@aklaver.com>
        <mailto:adrian.klaver@aklaver.com
        <mailto:adrian.klaver@aklaver.com>>> 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@aklaver.com <mailto:adrian.klaver@aklaver.com>
        <mailto:adrian.klaver@aklaver.com
        <mailto:adrian.klaver@aklaver.com>>




    --
    Adrian Klaver
    adrian.klaver@aklaver.com <mailto:adrian.klaver@aklaver.com>

--
Adrian Klaver
adrian.klaver@aklaver.com


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