# LN

The `LN()` function returns the logarithm of the given argument to base `e`.

## Syntax

```sql
LN ( number )

```

## Arguments

* `number`: Number to take the logarithm of.

> **📝 Note**: `LOG(n)` is an alias for `LN(n)`.

`LN(n)` is equivalent to `LOG(n) / LOG(e)`.

## Return Type

Float or double. If number is less than or equal to 0, or if base is non-positive or 1, returns `NULL`.

## Examples

```sql
SELECT LN(1234);

```

```output

+--------------------+
| LN(1234)           |
+--------------------+
| 7.1180162044653335 |
+--------------------+

```

***

Modified at: June 26, 2026

Source: [/cloud/reference/sql-reference/numeric-functions/ln/](https://docs.singlestore.com/cloud/reference/sql-reference/numeric-functions/ln/)

(An index of the documentation is available at /llms.txt)