Duplicate column

Common SQL Errors

Sign up for the latest in common SQL errors from the Galaxy Team!

Thank you! Your submission has been received!

Oops! Something went wrong while submitting the form.

Defining a column that already exists in the result

PostgreSQL

Duplicate column

Explanation

Happens when a query includes multiple columns with the same name or alias. Use unique names or aliases.

Common Causes

Multiple SELECT fields with the same alias

Related Errors

FAQs

Trusted by top engineers on high-velocity teams

Assort Health

Curri

Rubie

Comulate