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Top Industries by Turnover
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Top Industries by Turnover

MediumSQL · PostgreSQL

Problem

Write a SQL query to identify the top three industries with the highest employee turnover rate over the last calendar year at Revelio Labs.

Use the provided industry and quarterly workforce metric data. Calculate turnover rate as total separations divided by average headcount during the year.

Output

  1. Return one row per industry, with industry_name, total_separations, average_headcount, and turnover_rate.
  2. Include only the top three industries from the previous calendar year.
  3. Order by turnover_rate descending, breaking ties by industry_name ascending.

Schema

industries
ColumnTypeDescription
industry_idPKINTUnique industry identifier
industry_nameVARCHAR(100)Industry name
workforce_metrics
ColumnTypeDescription
metric_idPKINTUnique workforce metric record identifier
industry_idINTIndustry associated with the workforce metrics
metric_monthDATEMonth represented by the workforce metric
average_headcountDECIMAL(12,2)Average employee headcount for the period
separationsINTNumber of employee separations during the period
Tablesindustriesworkforce_metrics
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