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Customer Table Cleanup — SQL (sample). A sample build from my own practice projects, not paid client work — a SQL audit that removes duplicates, fixes inconsistent formats and nulls, with a before/after quality report and reusable queries.
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I documented the entire process, including the approach, tools, analysis, and dashboard development.
Read the full project walkthrough on Medium: https://medium.com/@Refino/how-i-built-an-end-to-end-sales-analytics-dashboard-in-excel-for-an-e-commerce-company-e8692d81f354
Excellent work! Turning raw data into actionable business insights is a valuable skill.
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This is an AI-assisted demonstration using synthetic data, not client work or a performance benchmark.
Full case study and visual comparison:
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Freelance Bookings & Income Reporting Dashboard
Built a reusable reporting workflow for freelance bookings and income using Excel, Power Query and Power BI. The dashboard tracks booked revenue, paid revenue, outstanding amounts, booking status and performance over time.
