how to select rows from table where one column not contain datas of another column

[vjayis]

i m having a table in which two columns had to compared for retrieving datas.,

totalmatches, matchestoday are the columnnames in which IDs are stored as comma separated values.

so for the present day i m displaying datas from the matchestoday column and update the totalmatches column by concatinating it with matchestoday.,

And for the next day i need to display new datas which must not include IDs present in matchestotal column.. so i need a query to display the results..

"select 8 from tablename where totalmatches not like ....."(%matchestoday%)

if its an string i can replace the coulmnname with the string to get the results..

but how to include columnname..

anyhelp.....
thanks

regards
vijay.s