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SQL โ€ข LESSON 131

Date Difference

How can we calculate delivery duration in days between two dates?

Advancedโฑ 3 Minutesโญ 1440 XP
๐Ÿค” THE QUESTION

How can we calculate delivery duration in days between two dates?

๐Ÿ’ก WHAT IS IT?

Subtracting order date from delivery date calculates fulfillment latency in days.

๐ŸŽฏ WHAT IS IT USED FOR?

Delivery SLA tracking, turnaround time analysis, shipping duration metrics.

๐Ÿ’ป EXAMPLE
SELECT
order_id,
order_date,
delivery_date,
delivery_date - order_date AS delivery_days
FROM orders;

๐ŸŽฏ Mission Objectives

Practice typing production-grade SQL code for Date Difference.

  • โœ“ Date subtraction
  • โœ“ Duration in days
  • โœ“ Fulfillment SLA
  • โœ“ Shipping metrics