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Hi I have one sql query. using this query i can download 10 lakhs of data in csv file for 6 hours. now i want to download 20 lakhs of data for 6 hours or less. please tell me how to increase the performance. SELECT id as imp_addr_id,userEmail, email ,name,mobile_no,gender,city,income,profession,experience,country,pincode,type … 
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