I want to select from a table only when a field repeats more than once. For this I have:
Select title, Count(*) As Cnt From poss_titles where Cnt > 1 Group By Title Order By Cnt desc
But it says invalid column name cnt. How should I refer to this dynamic field?
Also, I only really want titles which dont exist in another table. I believe a left join is required for this but I'm not too sure how to do it.
Can anyone offer me some pointers?