How do I create a report of tasks done in a specific period of time for a specific user?

[Manvi Singh]

Can someone please share with me how I can create a report for a specific user and all the tasks DONE by them during a specific time frame?

I don't understand how to use the date string.

Example:

Assignee = x@x.com and status = done and project = test and endOfMonth = (?)

[Ryot]

What is the time frame you are trying to report on? It's gonna depend on that, but, I usually pick the date field I want to use for my query (so, let's say I want to use the resolution date) then go from there. So if I wanna see everything resolved in the last 30 days. 

resolutiondate >= -30d

 For endOfMonth specifically, it would be in the format of

endOfMonth(1) or endOfMonth(2)

and that would mean it would take the query to the end of the next month or end of next 2 months, respectively.