How to add q param to check if project end date is null or greater than sysdate in Project REST API

Summary:

Hi,

I'm trying to fetch projects with below REST API-

/fscmRestApi/resources/11.13.18.05/projects?

q=BusinessUnitName='ABC' AND ProjectStatus='Approved' AND ProjectEndDate>={SYSDATE} OR ProjectEndDate IS NULL

I need help in, to check if projectenddate is null or greater than sysdate.

how to add condition for date attribute if its null or not with other conditions.

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