# DIGITS

```
DIGITS(expr)
```

Retains only the digits from a string expression.

Available in:

| Processors | SQL Studio |
| ---------- | ---------- |
| ✓          | ✓          |

*Sample code:*

```sql
USE `kafka`;
SELECT 
    DIGITS(product_sku), 
    product_sku 
FROM products-topic
LIMIT 1;
```

*Output:*

```json
{
  "value": {
    "DIGITS": "5021",
    "product_sku": "TOY-502-WH-1"
  }
}
```