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Top Cafes by Week-Over-Week Growth
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Top Cafes by Week-Over-Week Growth

MediumSQL · PostgreSQL

Problem

Given a table of daily sales across five different corporate cafes, write a query to find the top three performing cafes by week-over-week growth.

Use the most recent week in the data as the comparison week. Exclude cafes whose previous-week sales are zero or unavailable.

Output

  1. One row per qualifying cafe for the most recent week
  2. Columns: cafe_name, week_start, current_week_sales, prior_week_sales, and growth_pct
  3. Return the three highest growth percentages, ordered descending, with cafe_name ascending as the tie-breaker

Schema

daily_cafe_sales
ColumnTypeDescription
sale_idPKINTUnique identifier for a daily cafe sales record
cafe_nameVARCHAR(100)Corporate cafe name
sale_dateDATEDate on which sales were recorded
sales_amountDECIMAL(12,2)Total sales recorded for the cafe on the date
Tablesdaily_cafe_sales
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