Column already exists

Common SQL Errors

Schema

Duplicated column alias in output

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Typical Error Message

Column already exists

Explanation

This error means that the query includes multiple columns with the same alias or name in the SELECT clause. Rename one of the columns to resolve the conflict.

Common Causes

Using the same alias multiple times

Related Errors

FAQs

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Column already exists

Common SQL Errors

Typical Error Message

Explanation

Common Causes

Related Errors

FAQs

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