No i have a daily (on working days only) form that should be filled all working days (and more that one time at day). At the end of the month i pick up the data and it will be nice if i can see if there's a missing day, if the form it was filled all days.Your question is not clear. Please try asking again, in more detail.
Are you just wanting to see if there are any entries for a particular day?
Maybe post an example of what the data looks like along with your expected result.
It's an idea....Here is how I would probably do it. Create a separate table/list of all working days, and do an unmatched queries from that table/list to your log table to see if there are any missing days.