# Expressions

To generate new columns via a library of sophisticated data analytic functions.

## [Expression Overview](https://docs.foursquare.com/studio/docs/expressions-overview)

Learn more about basic expression creation and configuration.

## [Conversion Functions](https://docs.foursquare.com/studio/docs/expressions-conversion)

Learn more about leveraging expression functions to values between data types.

## [Geohash Functions](https://docs.foursquare.com/studio/docs/expressions-geohash)

Learn more about leveraging Geohash functions to manipulate, process, and derive new Geohash spatial indices.

## [Geometric Functions](https://docs.foursquare.com/studio/docs/expressions-geometric)

Learn more about leveraging Geometric functions to work with GeoJSON geometries.

## [H3 Functions](https://docs.foursquare.com/studio/docs/expressions-h3)

Learn more about leveraging H3 functions to process your data into H3 hexagonal indexes or utilize any other endpoint from the H3 API.

## [Math Functions](https://docs.foursquare.com/studio/docs/expressions-math)

Learn more about leveraging mathematical functions to complete simple to complex expressions.

## [Placekey Functions](https://docs.foursquare.com/studio/docs/expressions-placekey)

Learn more about leveraging Placekey functions within Studio.

## [String Functions](https://docs.foursquare.com/studio/docs/expressions-string)

Learn more about leveraging string functions, allowing you to operate on characters and strings.

## [Time and Date Functions](https://docs.foursquare.com/studio/docs/expressions-time-date)

Learn more about leveraging time functions to operate on temporal data.