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# Logarithmic Functions

#### <mark style="color:purple;">LN(</mark> \<expr> <mark style="color:purple;">)</mark> &#x20;

Computes the natural logarithm of a numeric expression. Expression should be greater than 0

Support datatype: Integer, Double

```sql
> select ln(-7)
nan

> select ln(10)
2.302585092994046
```