Detect Duplicate Customers with SQL | Dataford Interview Questions
Detect Duplicate Customers with SQL
MediumJoinsGroup ByAggregations
Problem
Write a SQL query to find all duplicate customer records in a database table, and explain how you would automate a test to verify this for American Fidelity Assurance.
Problem
Write a SQL query to find all duplicate customer records in a database table, and explain how you would automate a test to verify this for American Fidelity Assurance.
Your answer
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