# IN Predicate

A predicate testing whether a value equals any value in a list or subquery result.

## What does **IN Predicate** do in a relational database?

**IN Predicate** — A predicate testing whether a value equals any value in a list or subquery result.

```sql
SELECT order_id
FROM purchase_order
WHERE status IN ('open', 'processing');
```

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

Updated: September 27, 2026

Source: https://www.ask-codey.com/glossary/in-predicate