Tag Archives: caml query

[TIP – Sharepoint] – CAML Query – Filtering Boolean fields

A few days ago I needed to build a CAML query that return all the items which have changed since the last execution. I have a Yes/No (boolean) field called “HasChanged” that when the item is changed turns to “True”.

The query would be something like this:

         <fieldref Name="HasChanged"></fieldref>
         <value Type="Boolean">true</value>

The truth is that this query will not work as you might think. For Sharepoint, Yes/No fields are represented by 1 and 0. As so, the query has to be like:
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