On Wed, Sep 19, 2018 at 8:02 PM Andreas Kretschmer <andr...@a-kretschmer.de>
wrote:
>
>
> Am 19.09.2018 um 15:51 schrieb Durgamahesh Manne:
> > I have created BRIN index on few columns of the table without any
> > issues. But i am unable to create BRIN index on one column of the
> > table as i got error listed below
> >
> >
> > [local]:6263 postgres@huawei=# CREATE INDEX brin_idx on huawei using
> > brin ("dFetch");
> > ERROR: data type boolean has no default operator class for access
> > method "brin"
> > HINT: You must specify an operator class for the index or define a
> > default operator class for the data type.
>
> honestly, a BRIN-Index on a bool-column doesn't make much sense. What do
> you want to achive? Maybe a partial index with a where-condition on that
> column makes much more sense.
>
>
> Regards, Andreas
>
> --
> 2ndQuadrant - The PostgreSQL Support Company.
> www.2ndQuadrant.com
>
>
>
Hi
I want to execute distinct query at less possible time
for that reason ,Even i have already tried with BTREE indexes & HASH
indexes on required columns .distinct query execution time was not reduced
select distinct sub_head."vchSubmittersCode" ,rec."vchFileName" ,
rec."vchCusipFundIDSubFundID" , rec."vchFundUnitPrice" ,
sub_head."vchValuationDate" ,rec."vchAdvisorLabel" from "table1" rec join
"table2" sub_head on rec."vchSubmittersCode"=sub_head."vchSubmittersCode"
where rec."bFetch"=false and sub_head."bFetch"=false ;
Query taken around 7 minutes time to execute with BTREE indexes & HASH
indexes on required columns
Regards
Durgamahesh Manne
