User description of field, undefined if there is none.
id
id:string
returns
String that represents this field uniquely within this datasource. It is in the format 'a:generated-id:b[:c]',
where 'generated-id' is based on the first name given to the Field and a/b/c are type information.
To match a Field to a Column, use [this.DataSource.id][this.id] == Column.id
isCalculatedField
isCalculatedField:boolean
returns
True if this field is a table calculation.
isCombinedField
isCombinedField:boolean
returns
True if this field is a combination of multiple fields, false otherwise.
isGenerated
isGenerated:boolean
returns
True if this field is generated by Tableau, false otherwise.
Tableau generates a number of fields for a data source, such as Number
of Records, or Measure Values. This property can be used to
distinguish between those fields and fields that come from the underlying
data connection, or were created by a user.
A field contains information about what data source it belongs to, its role, and the ability to fetch the domain values.