# SIGMOID

The `SIGMOID()` function returns the sigmoid function of **x**.

![](https://cdn.sanity.io/images/h3bp8c98/production/bf0a596f04f015a8a7d5048be7345ae9d2aa0aa2-278x88.png)

## Syntax

```sql
SIGMOID (x)

```

## Arguments

* x: the argument

## Return Type

Double.

## Examples

```sql
SELECT SIGMOID(1);

```

```output

+--------------------+
| SIGMOID(1)         |
+--------------------+
| 0.7310585786300049 |
+--------------------+

```

***

Modified at: July 14, 2026

Source: [/db/v9.0/reference/sql-reference/numeric-functions/sigmoid/](https://docs.singlestore.com/db/v9.0/reference/sql-reference/numeric-functions/sigmoid/)

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