Datatype of the query result row element.
Alias name if an alias is used for the query result row element or an assigned display name from the query language in some default cases.
Actual show expression in the user typed query that produced this column.
A query result row type summary object that represents a nested table structure.
Granular unit in which the query result row element's data is represented.
Summary of the datatype, unit and related metadata of an individual row element of a query result row that is returned.