sql - Max function with where clause -


I am using MS Access 2007 and this is my basic SQL query: 

   
 But when I modify this query (below) to display the record for the latest date, I get an error saying that where I use the maximum function with the segment Can not:  
  SELECT rates.UNIT, Rates.PROJECT, Rates. [Date_of_CM memo], rates Rates, Rates The rates are marked by the check, where the check (= (.UNIT) = [check]. [Unit_name]] and (max. ([Dated_ofobm mmm]) & lt; [check]. [Reg_Date])));    
 
 
 You can not just enter  MAX   WHERE  in other  total functions ), but you can put  query  in the same way:  
  SELECT Rates Unit, Rates Project, Rates [Date_ofobmmmo], rates Rates, Rates Rates from rates, checks WHERE (rates. Units) = [check]. [Unit_Name]) and (Select Rates from MAX (Rates [Date_ofMMMMO]) & lt; [check]. [Reg_Date] )));

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