I wanted a count of such Requirements having no "Assigned User" added, this count to be display in Report as per Requirement Document.
Note; This to be achieve without creating any new fields
I have got workaround with creating 2 new integer computation fields
1) 2 Computation fields
a) Test_Field_status [ SelectionCount("Assigned User")==0?0:1
b) Test_Field_count [ "Test_Field_status"=1?1:0 ]
2) Create a Query for Report: Test_Count Query
3) Create a Report
Report Type: ALM_Basic - HTML, Column, One Grouping, Field Compute with ALM 2009 CSS
Report Query: Test_Count Query
Computation in Report: "Test_Field_status"==0
Let me know if there workaround without creating new fields and display the Null Assigned User Requirements count.