SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 2)
    Function arrayJoin (children 1)
     ExpressionList (children 1)
      Literal Array_[UInt64_0]
    Function replicate (children 1)
     ExpressionList (children 2)
      Literal \'hello\'
      Function emptyArrayString (children 1)
       ExpressionList
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.one
    TablesInSelectQueryElement (children 1)
     ArrayJoin (children 1)
      ExpressionList (children 1)
       Function emptyArrayString (alias unused) (children 1)
        ExpressionList
   Function not (children 1)
    ExpressionList (children 1)
     Function ignore (children 1)
      ExpressionList (children 1)
       Function replicate (children 1)
        ExpressionList (children 2)
         Literal \'hello\'
         Function emptyArrayString (children 1)
          ExpressionList
