Hi Derek,
You can able to search all the query in OUQR table , by below command ...
Select * from OUQR in Query Generator
But Suppose you want more details about the columns details in that table then run below query in query generator..
SP_Columns 'OuQR'
This Query result explained every details about the fields. you will found QlastDate & QLastTime is set by IS_NULLABLE by SAP default.
I hope it will help for you...
Rgds,
Kamlesh Naware