---
title: Filter block
slug: analytics/docs/oa-4-filter-block
docTags: 
createdAt: 2026-07-20T15:44:23.400Z
---

Use a filter block to select a specific property from the input data by applying a filter. Configure the filter block with the following fields:

- **Data value** – Specify the property being filtered and output by this block. It can be a dataset property, such as a column, derived column, or another block.
- **Filter by** – Define the filter condition for the previous data value. You can organize one or more conditions into a hierarchical structure of nested and/or conditions with unlimited levels. Use the following comparison operators, noting that string comparisons are case-insensitive:
  - **is** – Checks if the left side equals the right.
  - **is not** – Checks if the left side does not equal the right.
  - **contains** – Determines if the left side string contains the right side as a substring.
  - **in** – Verifies if the left side is present within the set of values on the right side.
  - **\<, >, >=, ...** – Applies mathematical operators.

Comparing properties may include catalog properties such as columns, derived columns, blocks, values, or parameters.

## Example

To filter out users in the Ads Plus and Premium tiers,

1. Select the **Users** dataset as the actor.
2. Select **subscription\_tier** and **Ads Plus** and **Premium values** in the **where** field.
3. Click **Run**.

![oa-filterblock.png](https://api.archbee.com/api/optimize/BrbvVORKJ5iIeSMZye5kI/qufSkgeyUsfqi4mkpE7gd-20260720-144918.png)

## Output

This block can be used to compute a property derived from the data by the filter block. This property may take the form of a column or another block.