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
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.
