Authors Deploying to Dev and Production

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

Domain

SQL

Difficulty

medium

Seniority

L4

Problem

The release engineering team wants to identify authors who ship to both the dev and production environments (case-insensitive match). Show each qualifying author and how many of those two environments they have deployed to, listed alphabetically.

Summary

Dev, staging, production. Who has touched all three?

Practice This Problem

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