Re: *Regarding brin_index on required column of the table

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От Durgamahesh Manne
Тема Re: *Regarding brin_index on required column of the table
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Msg-id CAJCZko+MGbrcid81M19+UhWKa5hGBNwJzsObO-tBHbfGtGxxoA@mail.gmail.com
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Ответ на *Regarding brin_index on required column of the table  (Durgamahesh Manne <maheshpostgres9@gmail.com>)
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Hi

I have complex query like for ex      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 ;


Even i have already tried with BTREE indexes & HASH indexes on required columns .distinct query execution time was not reduced


Query taken around 7 minutes time to execute with BTREE indexes & HASH indexes on required columns


SO please help in reducing the distinct query execution time

Regards

Durgamahesh Manne


On Wed, Sep 19, 2018 at 7:21 PM Durgamahesh Manne <maheshpostgres9@gmail.com> wrote:
Hi 
Respected postgres community members

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.

 below is the column description:
Column     datatype   collation    nullable       default    storage

 dFetch        boolean                                         false        plain



so please help in creating of the BRIN index on above column of the table .



Regards

Durgamahesh Manne


 

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