SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 2)
    Function materialize (children 1)
     ExpressionList (children 1)
      Identifier id
    Function toTypeName (children 1)
     ExpressionList (children 1)
      Identifier id
   TablesInSelectQuery (children 3)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (alias subquery) (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 1)
          ExpressionList (children 1)
           Literal \'aaa\'
    TablesInSelectQueryElement (children 1)
     ArrayJoin (children 1)
      ExpressionList (children 1)
       Literal Array_[UInt64_0] (alias id)
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      TableIdentifier test_table
     TableJoin (children 1)
      ExpressionList (children 1)
       Identifier id
