use dataverse test;

let $dt1 := datetime-from-unix-time-in-ms(956007429)
let $null1 := datetime-from-unix-time-in-ms(null)
let $d1 := date("1327-12-02")
let $t1 := time("15:35:49.938-0800")
let $dt2 := datetime-from-date-time($d1, $t1)
let $null2 := datetime-from-date-time(null, $t1)
let $null3 := datetime-from-date-time($d1, null)
let $dr1 := subtract-datetime($dt2, $dt1)
let $null4 := subtract-datetime(null, $dt1)
let $null5 := subtract-datetime($dt2, null)
let $dt3 := add-datetime-duration($dt1, $dr1)
let $null6 := add-datetime-duration(null, $dr1)
let $null7 := add-datetime-duration($dt1, null)
let $c1 := $dt1 = add-datetime-duration($dt3, subtract-datetime($dt1, $dt3))

return { "datetime1" : $dt1, "datetime2" : $dt2, "datetime3" : $dt3, "duration1" : $dr1, "c1" : $c1, "null1" : $null1, "null2" : $null2, "null3" : $null3, "null4" : $null4, "null5" : $null5, "null6" : $null6, "null7" : $null7 }