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Databases SQL Reporting by Example Day 1: Joining Tables Day 1: Review

What should be added to this query to only return 1 row per employee

What should be added to this query to only return 1 row per employee

1 Answer

The wording of this question is a little confusing. Sometimes you might have instances when you query data and you have duplicate rows of the same content. The question wants you to use the keyword DISTINCT which will only return values which are unique.