Internal use only.
The SQL::Query::Union object describes the union of two tables. A query may include one or more UNION clauses. Each subsequent unioned query is concatenated onto the original query (columns need to match). The set can be followed by an ORDER BY clause to reorder the results. For example:
SELECT DepartmentName from departments UNION SELECT Name from OldDepartments ORDER BY 1
Read Write. If .T., the ALL keyword is included in the UNION clause
Read Write. An additional query to add on to the results of the first query with.
Read Write. Returns the name of the underlying token as a type. This does NOT include the SQL::Query:: prefix.