Retail data analyst interviews test comparability more than SQL syntax

Retail data analyst interviews focus less on SQL syntax than on whether candidates can make periods, stores and promotions comparable before comparing them. The 4-5-4 retail calendar contains 52 weeks, so a 53rd week appears every five to six years, which can distort year-over-year comparisons. Typical interview rounds include a SQL screen, a business case, a metrics discussion and a behavioral round. Common SQL patterns cover comparable-store sales, fiscal-period joins, basket metrics, stockout-aware demand and promotion baselines. Strong candidates ask how the calendar, returns and store status are defined before trusting a figure.