SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function sum (children 1)
     ExpressionList (children 1)
      Identifier t
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier XXXX
   Function indexHint (children 1)
    ExpressionList (children 1)
     Function equals (children 1)
      ExpressionList (children 2)
       Identifier t
       Literal UInt64_42