Whenever you're ready, walk me through how you'd approach this.
Explain how you have used SAP or SAP S/4HANA-sourced financial data for reporting with SQL. Focus on how you would produce monthly or period-based finance outputs, how you aggregate data at the correct grain, and how you handle common ERP data issues such as null dimensions, reversals, duplicate postings, and debit/credit sign conventions.
SUM() and GROUP BY for account- or cost-center-level reportingThis is an easy conceptual SQL & Data Manipulation question. The interviewer is less interested in advanced SQL syntax and more interested in whether you can describe a reliable reporting workflow using ERP finance data.