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SQL โ€ข LESSON 191

Data Quality Production Check

How can we detect invalid production order records?

Advancedโฑ 3 Minutesโญ 2040 XP
๐Ÿค” THE QUESTION

How can we detect invalid production order records?

๐Ÿ’ก WHAT IS IT?

Comprehensive null checks on keys, negative amount checks, and null status checks count total invalid records.

๐ŸŽฏ WHAT IS IT USED FOR?

Production data quality gates, CI/CD pipeline test assertions, data reliability dashboards.

๐Ÿ’ป EXAMPLE
SELECT
COUNT(*) AS invalid_records
FROM orders
WHERE order_id IS NULL
OR customer_id IS NULL
OR amount IS NULL
OR amount < 0
OR status IS NULL;

๐ŸŽฏ Mission Objectives

Practice typing production-grade SQL code for Data Quality Production Check.

  • โœ“ Production data quality check
  • โœ“ Zero-defect assertion
  • โœ“ Pipeline gatekeeper
  • โœ“ Data reliability monitoring