You can find some useful sample in below document,
http://docs.splunk.com/Documentation/SplunkCloud/7.0.0/SearchReference/Spath
And try like this,
index= <your_own_search> | spath |rename Projects{}.Tasks{}.TaskDueDate AS x, Projects{}.ProjectName AS y, Projects{}.Tasks{}.TaskName AS z |eval joinfield = mvzip(x,mvzip(y,z)) |mvexpand joinfield |eval Name=mvindex(FirstName,0) +" "+mvindex(LastName,0) | eval spjoinfield = split(joinfield,",") | eval Date=mvindex(spjoinfield ,0) | eval ProjectName=mvindex(spjoinfield ,1)| eval TaskName=mvindex(spjoinfield ,2)|table Name ProjectName TaskName Date
I hope this helps.
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