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Normalize all email addresses to lowercase for consistent comparison

A medium SQL interview practice problem on DataDriven. Write and execute real sql code with instant grading.

Domain
SQL
Difficulty
medium

Problem

Normalize all email addresses to lowercase for consistent comparison. Show username and the lowercased email as normalized_email.

Practice This Problem

Solve this SQL problem with real code execution. DataDriven runs your SQL queries against a real database and grades it automatically.

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