IT Services Circle
Apr 28, 2025 · Databases
Choosing the Right Data Type for Storing Billions of Phone Numbers: INT vs VARCHAR
This article examines why storing 2 billion phone numbers using INT or BIGINT is problematic and argues for using VARCHAR(20) to preserve data integrity, support international formats, simplify queries, and avoid common pitfalls in database design and development.
Data IntegritySQLVARCHAR vs BIGINT
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