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storeman-performance-analysis
storeman-performance-analysis PublicWarehouse picking performance analysis using SQL: storeman KPIs, rack zone efficiency, and ABC (Pareto) item classification
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barbershop-customer-analysis
barbershop-customer-analysis PublicSQL portfolio project analyzing 2,000 barbershop customer visits — customer segmentation, retention/churn, service revenue mix, and Pareto analysis using window functions, CTEs, and conditional agg…
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