> ## Documentation Index
> Fetch the complete documentation index at: https://kumo.ai/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# IS NOT NULL

#### `<expression> IS NOT NULL <value>`

## Description

Evaluates to True if the value returned by `<expression>` doesn't equate to **Null or N/A**. `<expression>` can be `<table>.<column>` or `AGG(<table>.<column>, <start>, <end>)`.

This operator can be applied to columns of all types.

### Example

<CodeGroup>
  ```Text PQL theme={null}
  ARTICLES.DESCRIPTION IS NOT NULL
  ARTICLES.DESCRIPTION != NULL
  ```
</CodeGroup>