Tomas Svojanovskyredmonkey.hashnode.dev·Jul 25, 2024Postgres Practice — Duplicate Emails (Easy)Tables The problem Example Solution Duplicated emails exist more than once, meaning we need to count them. The obvious solution is to use GROUP BY to create groups of emails and then count them. By using HAVING, we can easily detect duplicated ema...Postgres practice IPostgreSQLAdd a thoughtful commentNo comments yetBe the first to start the conversation.