How to Filter Out Records with Null DateTime Values in a GET Request for OData Service

[kakshat]

Hello,

I am making a GET request on an OData service to get entities which have, among other fields, a DateTime (YYYY-MM-DDTHH:MM:SS) type of field. This field is filterable. I want to filter out those entities for which this DateTime field is null.

How should the URI be framed so that this can be achieved?

I have already tried the following but to no avail:

1. Checking for equality with 0000-00-00T00:00:00 - It does not help as the system apparently considers a null value different from an initial value (such as above).

2. Adding the dual condition "DateTime > 0000-00-00T00:00:00" and "DateTime < 9999-12-31T00:00:00"

Thanks,
Akshat

[kakshat]

While I was doing a hit-and-trial, I found that I was able to filter out the blank values by using the condition gt datetime'0001-00-00T00:00:00'.