Project
Meridian Retail Co. · SQL · beginner
The brief
Chidi Okafor here. I have a meeting with an investor next week and I keep getting different customer counts from different teams — 2,331, 2,131, 2,200. I need ONE number I can defend. Can you investigate and tell me which count is correct and why the others are wrong? Show me the three different ways people are counting.
Independent grading
92/100
Achieved 26 Oct 2026
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