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SQL query optimisation

sandeepgupta_18Sep 30 2019 — edited Sep 30 2019

Hi All,

Can anyone help  me query Optimization

I used two tables A & B

when querying from A its perfect but when I join it with B it took 5 min and return on 60k records.

I tried to find out reason and found   there is no index on that table(only Non-unique indexes) and table contains 20 millions of records.

Now the problem is index can not be created on that table and neither it can be  drop or recreate  ..

All stats are gathered already

can anyone suggest something on this..

Thanks in Advance

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