> I don't understand why. In my example it wouldn't. The count functions could > count > the number of empty objects or objects that contain only the STREET field.
I've looked into the test and here are the issues: 1) The fn:count() does not have the %explores-json annotation. I've confused it with the JSONiq array size() function. 2) Currently the dataguide does not distinguish between any of the fn: functions. So for example if you modify the query: for $obj in parse-json(f:read-text(fn:resolve-uri("citylots-small.json"))) group by $s := $obj.STREET return { street : $s, count : count($obj), seq : subsequence($obj, 1, 100) } then if you prune the input to have only the .STREET field you'll get an incorrect result. So currently the argument to subsequence() is "explored" and so the dataguide is "*" in this case. The same happens with count(). 3) fn:count() is a special case as it only cares for the number of objects and not their contents. I think another annotation could be added, which would be the opposite of %explores-json and which would indicate that the function ignores the details of the object. Or I could just add some code in the dataguide collection to handle fn:count() separately. -- -- https://code.launchpad.net/~zorba-coders/zorba/use-dataguide/+merge/176385 Your team Zorba Coders is subscribed to branch lp:zorba. -- Mailing list: https://launchpad.net/~zorba-coders Post to : zorba-coders@lists.launchpad.net Unsubscribe : https://launchpad.net/~zorba-coders More help : https://help.launchpad.net/ListHelp