SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 7)
    Identifier nest.a
    Identifier nest.b
    Identifier nested.nest.a
    Identifier nested.nest.b
    Identifier t.nest.a
    Identifier t.nest.b
    QualifiedAsterisk (children 1)
     Identifier t
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier nested (alias t)