Getting a dynamic Sample - response (4) by smull

Hi Dieter....that looks like it could be very useful. The table I will be selecting from will 99% of the time be between 30k=100k rows (not that large). Forgive my ignorance in terms of SQL I am a relatively new user and am self taught so have not had much in the qay of guidance but does the above provide a Random sample and would it be much more expensive than using a Random?

Many Thanks for the help...it is greatly appreciated...