Hi, Gary, You could cast from dateTime to date, using the range index:
xquery version "1.0-ml"; xs:date( cts:element-values( fn:QName( "http://www.rsuitecms.com/rsuite/ns/materialized-view", "last-modified"))) I thought perhaps one could create two indexes against the same data with different, yet compatible scalar types. But when I defined another index of type date against this data, cts:element-values() returned an empty sequence. -Brent From: general-boun...@developer.marklogic.com [mailto:general-boun...@developer.marklogic.com] On Behalf Of Gary Larsen Sent: Monday, February 18, 2013 2:46 PM To: General MarkLogic Developer Discussion Subject: [MarkLogic Dev General] range index on timestamp for unique date Hi, The documents I'm after have a timestamp element formatted like this: <timestamp>2013-02-13T14:51:19.373</timestamp> I need a list of distinct dates so that I can run a query on each date. What I'm trying to avoid is using distinct-values() on the full result set as that can be very large (and cause tree cache errors): fn:distinct-values(for $a in $actions return xs:date(xs:dateTime($a/nv:timestamp))) Is it possible to make a range or field index with a function to convert to date? Tried a range index with scalar type of date but cts:element-values() returns distinct date-time values. The only solution I can think of is to insert a date element all the docs. Thanks for any advice. Gary
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