How to add transient annotation in xsd for cdts?

I have added a field using transient to my cdt 

<xsd:element name="abc" nillable="true" type="xsd:string">
<xsd:annotation>
<xsd:appinfo source="appian.jpa">@Transient</xsd:appinfo>
</xsd:annotation>
</xsd:element>

But while querying it is throwing error to fetch the data.

As far as I understood there is some issue with transient keyword. Because if I remove transient field , it is working fine and querying data without any error.

Thanks in advance.