SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 7)
    Identifier struct.d1
    Identifier struct.a1
    Identifier struct.a2
    Identifier struct.a3
    Identifier struct.a4
    Identifier struct.a5
    Identifier struct.a6
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier aliases_test
