ATG RQL Tips

Query any item but limit results to only one.

<query-items item-descriptor="category">ALL RANGE +1</query-items>

Remove an item.
<remove-item item-descriptor="<item-descriptor>" id="<ID>"/>

Query item where property is null/not defined

<query-items item-descriptor="product">seoTags IS NULL</query-items>

Query date ranges

<query-items item-descriptor="project"><![CDATA[checkinDate > date("2016-11-18") and checkinDate < date("2016-11-21")]]></query-items>

Get where a property is set (not null)

<query-items item-descriptor="promotion">(NOT closenessQualifiers IS NULL) RANGE+1</query-items>