CAML IN operator and AND operator with multiple condition

Question

The Following CAML Query Not Working for me.. I am not aware much about sharepoint platform. i am using SP 2007 and trying to use IN operator for a lookup field.

"<Where>"
                                + "<And>"
                                + "<And>"
                                + "<In>"
                                + "<FieldRef Name='Role'/>"
                                + "<Values>"
                                + "<Value Type = 'Text'>A</Value>"
                                + "<Value Type = 'Text'>B</Value>"
                                + "</Values>"
                                + "</In>"
                                + "<Leq>"
                                + "<FieldRef Name='Enddate'/><Value Type = 'DateTime'>" + SPUtility.CreateISO8601DateTimeFromSystemDateTime(Dt) + " </Value>"
                                + "</Leq>"
                                + "</And>"
                                + "<Includes>"
                                + "<FieldRef Name='Menu'/><Value Type='Text'>Benefits</Value>"
                                + "</Includes>"
                                + "</And>"
                                + "</Where>";

The above query not return anything but i have values in my list for the above combination.

If I slightly modify the query like following w/o using IN then it is working fine.

"<Where>"
                                + "<And>"
                                + "<And>"
                                + "<Eq>"
                                + "<FieldRef Name='Role'/>"
                                //+ "<Values>"
                                + "<Value Type = 'Text'>A</Value>"
                                //+ "<Value Type = 'Text'>B</Value>"
                                //+ "</Values>"
                                + "</Eq>"
                                + "<Leq>"
                                + "<FieldRef Name='Enddate'/><Value Type = 'DateTime'>" + SPUtility.CreateISO8601DateTimeFromSystemDateTime(Dt) + " </Value>"
                                + "</Leq>"
                                + "</And>"
                                + "<Includes>"
                                + "<FieldRef Name='Menu'/><Value Type='Text'>Benefits</Value>"
                                + "</Includes>"
                                + "</And>"
                                + "</Where>";

(Please Don't Suggest me to use CAML Query builder cuz I cannot install anything on my DEV box. And Moreover I haven't install SP WSS in my local :) )

Answer 1

The IN operator for CAML was introduced in Sharepoint 2010. You cannot use it in Sharepoint 2007. To achieve the same result you will have to write it as a OR's instead.

<Or>
 <Eq>
  <FieldRef Name='Role' />
  <Value Type='Text'>A</Value>
 </Eq>
 <Eq>
  <FieldRef Name='Role' />
  <Value Type='Text'>B</Value>
 </Eq>
</Or>