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Code Keys/SQL Academy/Module 20
SQL ACADEMY • MODULE 20

NULL Handling & Data Quality

Learn how to identify, handle, replace, and analyze missing SQL data.

Advanced📚 8 Lessons⭐ 0 / 10680 XP⏳ In Progress
0 / 8 Lessons Completed (0%)
CHALLENGE CURRICULUM

Module Lessons

0 / 8 Complete
LESSON 117

🔓 IS NULL

⏱ 3 Mins • ⭐ 1300 XP • Advanced

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LESSON 118

🔒 IS NOT NULL

⏱ 3 Mins • ⭐ 1310 XP • Advanced

LESSON 119

🔒 COALESCE

⏱ 3 Mins • ⭐ 1320 XP • Advanced

LESSON 120

🔒 COALESCE Multiple Values

⏱ 3 Mins • ⭐ 1330 XP • Advanced

LESSON 121

🔒 NULLIF

⏱ 3 Mins • ⭐ 1340 XP • Advanced

LESSON 122

🔒 Missing Data Count

⏱ 3 Mins • ⭐ 1350 XP • Advanced

LESSON 123

🔒 Data Quality Check

⏱ 3 Mins • ⭐ 1360 XP • Advanced

LESSON 124

🔒 Multiple Data Quality Checks

⏱ 3 Mins • ⭐ 1370 XP • Advanced

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