Carrot reference
...
Fields
Data Types
String
A Carrot datatype used by fields that store text values.
The String datatype is supported by Custom Fields, however it cannot directly be used to define custom fields. Custom fields that store text values must be defined as one of two String subtypes: ShortText or LongText.
The String datatype does not support any user retrievable properties.
favoriteFlavor:orange returns all records where favoriteFlavor has a value of orange.