## FROM_BASE64

Decodes a base64 string.

### Examples

```esql
ROW a = "ZWxhc3RpYw=="
| EVAL d = FROM_BASE64(a)
```

```esql
ROW encoded = "U29tZSBzYW1wbGUgdGV4dA=="
| EVAL decoded = FROM_BASE64(encoded)
```