CreateQuery computed_datum_hours (children 2)
 Identifier computed_datum_hours
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 3)
    ExpressionList (children 2)
     Function toStartOfHour (alias datetime_desc) (children 1)
      ExpressionList (children 1)
       Identifier b.datetime_value
     Function sum (alias value) (children 1)
      ExpressionList (children 1)
       Identifier b.value
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       TableIdentifier vt (alias b)
    ExpressionList (children 1)
     Function toStartOfHour (children 1)
      ExpressionList (children 1)
       Identifier b.datetime_value
