# Wildcard Character

A pattern character representing unknown text, such as % or \_ with LIKE.

## What is **Wildcard Character** in a relational database?

**Wildcard Character** — A pattern character representing unknown text, such as % or _ with LIKE.

```sql
SELECT customer_id, email
FROM customer
WHERE email LIKE '%@example.com';
```

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/wildcard-character