SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 3)
    Literal \'hours\' (alias maximum_unit)
    Literal \'microseconds\' (alias minimum_unit)
    Function arrayJoin (alias elapsed) (children 1)
     ExpressionList (children 1)
      Literal Array_[UInt64_0, Float64_3601.000000003]
   ExpressionList (children 1)
    Function formatReadableTimeDelta (children 1)
     ExpressionList (children 3)
      Identifier elapsed
      Identifier maximum_unit
      Identifier minimum_unit
