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

# Dimension Columns

> How we name dimension columns (attributes) for consistent filtering and grouping.

## Overview

A dimension will always consist of an `entity` (e.g. order, customer) and a `dimension`, which is a
qualifier that specifies a certain attribute of the `entity`. Like with metrics, the `entity` and `dimension`
combination is the majority of what you’re looking for when locating a dimension or typing a dimension in a query.
As such, `entity` and `dimension` will always appear next to each other, with any `modifiers` appearing first.

## Dimension column name formula

`{{ modifier }}_{{ entity }}_{{ dimension }}`

## Examples

* `order_index`, where `order` is the `entity` and `index` is the `dimension` that specifies the attribute of the order
* `product_variant_title`, where `product_variant` is the `entity` and `title` is the `dimension` that
  specifies the attribute of the product variant

In some cases, dimension columns will have modifiers. As with metrics, modifiers will fall before the `entity`.

## Examples with modifiers

* `primary_order_payment_gateway`, where `order` is the `entity`, `payment_gateway` is the `dimension`, and `primary`
  modifies this `entity_dimension` combination
* `most_recent_refund_date`, where `refund` is the `entity`, `date` is the `dimension`, and `most_recent`
  modifies this `entity_dimension` combination