Limitation of FetchXML regarding 'in' operator

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Posted on by Community Member Microsoft Employee

Hi,

you can use custom filter for lookups in JavaScript, thus you can limit the data sets selectable in the lookup. E.g.:

Xrm.Page.getControl("new_userlookup").addCustomFilter(filter);

where the variable "filter" is a FetchXML like this:

<filter type='and'><condition attribute='domainname' operator='in'>
<value>mydomain\user1</value>
<value>mydomain\user2</value>
<value>mydomain\user3</value>
...
</condition></filter>

As you can see the filter consists of several specific data sets.

I Wonder if there's a limitation when using this kind of query - is it possible to specify unlimited data sets inside the FetchXML or this there any kind of limitation (e.g. only 50 data sets allowed etc.)? This is a general question, the code above is only a sample.

With best regards,

Michael

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Verified answer

Rawish Kumar 13,756 on at

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RE: Limitation of FetchXML regarding 'in' operator

The "In" filter should translate directly to SQL's "In" statement, and according to this reference, there is only the limitation of the query's total size:

stackoverflow.com/.../mysql-in-condition-limit

The "condition" limitation, as identified in the materials Vijay presented, would apply if you were simulating "In" with a bunch of "Or" grouped conditions--which is terrible form--and I suspect you knew that when asking about "In".

I've used "In" successfully up to 8000+ references; and haven't found a limit yet. Again, according to the SQL documentation, the limit will likely be with the total size of the query message, rather than the number entries in the "In" set.

For testing of FetchXML, you can test here online http://msxrmtools.com

mark my suggestion as verified if helpful.