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SQL • LESSON 191

Data Quality Production Check

How can we detect invalid production order records?

Advanced3 Minutes2040 XP
🤔 THE QUESTION

How can we detect invalid production order records?

💡 WHAT IS IT?

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

🎯 WHAT IS IT USED FOR?

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

💻 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;

🎯 Mission Objectives

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

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