Last tested; Jun 4, 2021
LEXP stands for Looker Expressions. It is a special syntax created by Looker that is used for Table Calculations, Custom Fields, and Custom Filters. We have a doc that outlines the general usage of expressions, and another doc that has a list of all functions that it currently supports.
The value here is to know that the overlap exists between Table Calculations, Custom Fields, and Custom Filters. Not all functions are available in all 3 locations, but many are.
This content is subject to limited support.