There is a table where in we record student name, lecture subject and presenting date since last year.
We need a query to show all the students who have made a lecture. We want the query to remove a lecturer who has presented less than a month on the same topic. For example, John made a lecture on politics on 1st August and then he again presented the same lecture on 15 August. In this case we want the second record not to be shown. However if he presents again on politics on 2nd of September it will be shown on the query.
Thank you,
We need a query to show all the students who have made a lecture. We want the query to remove a lecturer who has presented less than a month on the same topic. For example, John made a lecture on politics on 1st August and then he again presented the same lecture on 15 August. In this case we want the second record not to be shown. However if he presents again on politics on 2nd of September it will be shown on the query.
Thank you,