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9. SQL: Billing Software Report 2
You are working on a billing application and need to get a list of customers with their
transaction transcripts.
The result should have the following columns: iban / transactions | total.
• iban-client's IBAN number
• transactions - list of transaction amount records for a specific IBAN:
o Record is a transaction amount
o Records are separated by the sign of the amount of the transaction surrounded by a
single space. See 'Expected Output' for an example.
o Records are sorted in ascending order of dt
• total- the total amount of all transactions for a specific IBAN
The result should be sorted in descending order by total.

Sagot :

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