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SQL Skills Check
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SQL Skills Check

MediumSQL · PostgreSQL

Problem

Are you good at dealing with SQL?

For the supplied loans and payments tables, write a query that summarizes payment activity for active loans. Include loans with no recorded payments and classify whether each loan has been paid in full.

Output

  1. One row per active loan with loan_id, borrower_name, principal, total_paid, payment_count, and payment_status.
  2. Include all active loans, including those without payments. Sort by loan_id ascending.

Schema

loans
ColumnTypeDescription
loan_idPKINTUnique loan identifier
borrower_nameVARCHAR(100)Borrower name
principalNUMERIC(12,2)Original principal balance
statusVARCHAR(20)Current loan status
origination_dateDATEDate the loan was originated
payments
ColumnTypeDescription
payment_idPKINTUnique payment identifier
loan_idINTLoan associated with the payment
payment_dateDATEDate the payment was recorded
payment_amountNUMERIC(12,2)Payment amount
Tablesloanspayments
Interviewer

Your question is SQL Skills Check. Start with the requirements and the two tables in the Question tab.

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