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SQL for Task Completion Time

MediumSQL · PostgreSQL00:00
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Your question is SQL for Task Completion Time. Start with the requirements and the two tables on the right.

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Problem

Can you write a SQL query to find the average time taken to complete operational tasks at Okta?

Use the provided Okta operational task data. Include only completed tasks with both start and completion timestamps, and report results by task type.

Output

  1. One row per task type with qualifying completed tasks
  2. Columns: task_type, average_minutes, and completed_task_count
  3. Sort by average_minutes descending, then task_type ascending for ties

Schema

operational_task_types
ColumnTypeDescription
task_type_idPKINTUnique identifier for an operational task type
task_type_nameVARCHAR(100)Readable name of the operational task type
operational_tasks
ColumnTypeDescription
task_idPKINTUnique identifier for an operational task
task_type_idINTReferences the operational task type
statusVARCHAR(20)Current task status
started_atTIMESTAMPTimestamp when task processing started
completed_atTIMESTAMPTimestamp when task processing completed
Tablesoperational_task_typesoperational_tasks
Your solutionPostgreSQL
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