Solving 'Unknown column'

What You Will Learn

• Verify exact column names in the target table.
• Use table aliases consistently in JOIN queries.
• Check if migrations are applied in the current environment.

Sample SQL

SELECT o.id, u.name
FROM orders o
JOIN users u ON o.user_id = u.id
WHERE u.is_active = 1;

Next Step

Try rewriting this query in your own schema, then use our tools to format and refine it.