In an xquery expression, I have obtained a set of values within a for-expression, and one value is in a separate variable.
Now, I want to subtract the single value from first value of the list, and then subtract consecutive members of the list from each other-- and in the resulting set of difference values, I want to obtain the min/max values...
The query upto now looks like this--
let $value1:= 1998
let $rows_citations:=
$doc//div[@id="patent_citations"]
/div[@id="patent_citations_v"]
/table[@class="rel_patent"]
/tbody/tr[1]
/following-sibling::tr
for $pos in $rows_citations/position()
let $date2_c := customfn:dateconverter1($rows_citations[$pos]/td[3])
Now the subtraction I want is between first value of date2_c
and value 1, and after that between consecutive members of date2_c
... And from the resulting list I want the min/max values... How do I go about doing this?
I am esp. confused about creating a new list variable that stores all the differences, esp. when we are already inside a for loop, and are iterating over each value of a list (via variable date2_c)
I. This XQuery 3.0 query (which is also a pure XPath 3.0 expression):
produces the wanted result the minimum and maximum values from the list of subtractions:
II. XQuery 1.0 solution:
This again produces the same correct result: