use dataverse test;

let $d1 := date-from-unix-time-in-days(15600)
let $null1 := date-from-unix-time-in-days(null)
let $dt1 := datetime("1327-12-02T23:35:49.938Z")
let $d2 := date-from-datetime($dt1)
let $null2 := date-from-datetime(null)
let $dt2 := datetime("2012-10-11T02:30:23+03:00")
let $d3 := date-from-datetime($dt2)
let $dr1 := duration("-P2Y1M90DT30H")
let $d4 := add-date-duration($d1, $dr1)
let $null3 := add-date-duration(null, $dr1)
let $null4 := add-date-duration($d1, null)
let $c1 := $d1 = add-date-duration($d4, subtract-date($d1, $d4))
let $dr2 := duration("P300Y900MT360000M")
let $d5 := add-date-duration($d2, $dr2)
let $c2 := $d2 = add-date-duration($d5, subtract-date($d2, $d5))
let $dr3 := subtract-date($d5, $d2)
let $dr4 := subtract-date($d4, $d1)
let $null5 := subtract-date(null, $d2)
let $null6 := subtract-date($d5, null)

return { "date1": $d1, "date2": $d2, "date3": $d3, "date4": $d4, "date5": $d5, "duration1": $dr3, "duration2": $dr4, "c1": $c1, "c2": $c2, "null1": $null1, "null2": $null2, "null3": $null3, "null4": $null4, "null5": $null5, "null6": $null6 }