jsoniq

Both JSONiq and XQuery 3.1 extend XQuery 3.0 with support for JSON. How do they differ? Overall motivation XQuery 3.1 was designed with the goal to support additional data structures (maps, arrays) in memory. These structures are mapped to JSON for input and output. XQuery 3.1 has been a W3C recommendation since March 2017. JSONiq was designed with the goal of querying and updating JSON in settings such as document stores. It was also designed by members of the XML Query working group (disclaimer: I am one of them) while investigating various possibilities to support JSON. While it is not an

I'd like to delete duplicates in a JSONiq array. let $x := [1, 2, 4 ,3, 3, 3, 1, 2, 5] How can I eliminate the duplicates in $x? let $x := [1, 2, 4 ,3, 3, 3, 1, 2, 5] return [ distinct-values($x[]) ] Paul Sweatte Use the replace function multiple times: replace($x, "([1-5])(.*)\1", "$1") Here's a fully functional JavaScript equivalent: [1,2,4,3,3,1,2,5].toString().replace(/([1-5]),(\1)/g, "$1").replace(/(,[1-5])(.*)(\1)/g,"$1$2").replace(/([1-5])(.*)(,\1)/g,"$1$2") Here is a generic JavaScript equivalent via the JSON.parse() method, which removes duplicates automatically: var foo = [1,2,4,3,3