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Find Unapplied Cash Payments
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Find Unapplied Cash Payments

MediumSQL · PostgreSQL

Problem

Task

You are given payment activity and account master data. Write a PostgreSQL query that returns all unapplied cash payments — payments that were received but were not matched to an account — along with the payment details needed for reconciliation. Include payments with a missing account_id as well as payments whose account_id does not exist in the accounts table.

Schema

payments
ColumnTypeDescription
payment_idPKINTPrimary key for each payment
account_idINTReferenced account identifier, may be missing for unapplied cash
payment_dateDATEDate the payment was received
payment_amountDECIMAL(12,2)Payment amount
payment_methodVARCHAR(50)Method used for the payment
accounts
ColumnTypeDescription
account_idPKINTPrimary key for each account
account_nameVARCHAR(100)Account name
statusVARCHAR(20)Account status
Tablespaymentsaccounts
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Your question is Find Unapplied Cash Payments. Start with the requirements and the two tables in the Question tab.

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