Hi Ihe,

    (

      <benefitStartDate>20170101</benefitStartDate>,<benefitEndDate>20170301</benefitEndDate>,

      <benefitStartDate>20170101</benefitStartDate>,<benefitEndDate>20170501</benefitEndDate>

    )/distinct-values(.)

is not the same as:

    distinct-values(

      <benefitStartDate>20170101</benefitStartDate>,<benefitEndDate>20170301</benefitEndDate>,

      <benefitStartDate>20170101</benefitStartDate>,<benefitEndDate>20170501</benefitEndDate>

    )

Which returns the distinct-values for a sequence of elements.

Your code returns the distinct-values for each of these (singleton) elements, it is like calling:

    (

      distinct-values(<benefitStartDate>20170101</benefitStartDate>),

      distinct-values(<benefitEndDate>20170301</benefitEndDate>),

      distinct-values(<benefitStartDate>20170101</benefitStartDate>),

      distinct-values(<benefitEndDate>20170501</benefitEndDate>)

    )

Another variant, that returns the result you expected is:

    (

      <benefitStartDate>20170101</benefitStartDate>,<benefitEndDate>20170301</benefitEndDate>,

      <benefitStartDate>20170101</benefitStartDate>,<benefitEndDate>20170501</benefitEndDate>

    ) => distinct-values()

Best

Michael

Am 27.08.2017 um 13:09 schrieb Ihe Onwuka <ihe.onwuka@g...>:

https://stackoverflow.com/questions/45904288/why-does-distinct-values-not-yield-distinct-values-on-a-non-atomized-sequence