Post on Querying Test Management Objects by Duat Le
Duat Le, a Developer on our team, has put up a very nice post that goes over how to query Test Objects using WIQL (Work Item Query Language). This information will be very useful if you ever need to use our query syntax in any code you write against our Test Management API’s.
https://blogs.msdn.com/duat_le/archive/2010/02/25/wiql-for-test.aspx