How to build complex RTC query combining "AND" "OR" conditions

Hello,

This is a question about the RTC building query in RTC-CLM 5.0.

I would like to create a query with the following criteria:.

Find all (unresolved Work Items)

and

((Due date before today’s date) or (Due date is none))

and

((Estimated date before today’s date) or (Estimated date is none))

and

((Due date is not none) or (Estimated date is not none))

I already browse this good article https://jazz.net/library/article/1007 but I’m sure what we want can be done.

In particular I’m not too familiar how to combine the “And” and “Or” condition?

Have you other good tips to do such queries

Thank you in advance

Pascal Jean