Database: insurance_and_eClaims
Question: Find the sum amount claimed in the most recently created document.
SQL: select sum(t1.amount_claimed) from claim_headers as t1 join claims_documents as t2 on t1.claim_header_id  =  t2.claim_id where t2.created_date  =  (select created_date from claims_documents order by created_date limit 1)