SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 3)
    Function toTypeName (children 1)
     ExpressionList (children 1)
      Identifier nest.a
    Function toTypeName (children 1)
     ExpressionList (children 1)
      Identifier nest.b
    Function toTypeName (children 1)
     ExpressionList (children 1)
      Identifier nest.c
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier decimal
