Explain which financial analysis tool you are most proficient in, with emphasis on a PostgreSQL-based workflow. Describe how you used SQL aggregations, GROUP BY, and basic data wrangling to improve a finance process such as reporting, variance analysis, or reconciliation.
Ability to connect tool proficiency to SQL-based analysisUnderstanding of aggregations and `GROUP BY` in finance workflowsPractical use of data wrangling to improve reporting qualityCommunication of measurable business impact