Database: insurance_and_eClaims
Question: What is the name of the customer who has made the largest amount of claim in a single claim?
SQL: select t3.customer_details from claim_headers as t1 join policies as t2 on t1.policy_id  =  t2.policy_id join customers as t3 on t2.customer_id  =  t3.customer_id where t1.amount_claimed  =  (select max(amount_claimed) from claim_headers)