# Column Alias

A temporary output name assigned to a selected expression or column.

## What is **Column Alias** in a relational database?

**Column Alias** — A temporary output name assigned to a selected expression or column.

```sql
SELECT total_amount AS order_total
FROM purchase_order;
```

Level: Novice · [More Database terms at this level](https://www.ask-codey.com/glossary/subjects/database/novice)

Updated: September 27, 2026

Source: https://www.ask-codey.com/glossary/column-alias