SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 9)
    Identifier array
    Identifier struct.d1
    Identifier struct.a1
    Identifier struct.a2
    Identifier struct.a3
    Identifier struct.a4
    Identifier struct.a5
    Identifier struct.a6
    Identifier joined
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier aliases_test
    TablesInSelectQueryElement (children 1)
     ArrayJoin (children 1)
      ExpressionList (children 1)
       Identifier struct.a1 (alias joined)
