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SQL for Monthly Team Performance
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SQL for Monthly Team Performance

HardSQL · PostgreSQL

Problem

Write a SQL query to analyze operational performance by team at Box, including joins across multiple tables and aggregations by month. Return monthly request volume, completed requests, completion rate, and average resolution time for each team with operational records. Rank teams within each month by completion rate, then request volume, and sort the final results chronologically.

Output

  1. One row per month and team
  2. Columns: month, team_name, total_requests, completed_requests, completion_rate, avg_resolution_hours, and team_rank
  3. Include teams with operational records, order by month, rank, and team name

Schema

teams
ColumnTypeDescription
team_idPKINTUnique team identifier
team_nameVARCHAR(100)Box team name
employees
ColumnTypeDescription
employee_idPKINTUnique employee identifier
employee_nameVARCHAR(120)Employee name
team_idINTEmployee's team identifier
roleVARCHAR(100)Employee's operational role
work_items
ColumnTypeDescription
work_item_idPKINTUnique operational work item identifier
employee_idINTAssigned employee identifier
created_atTIMESTAMPWork item creation timestamp
statusVARCHAR(30)Current work item status
resolution_hoursNUMERIC(10,2)Hours required to resolve the work item
Tablesteamsemployeeswork_items
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