Need help in getting SQL query

Hi All,Need your help on getting the sql query for the below dataEMP ID Flag Processing DateABC1 yes Current DateABC1 No Old DateDEF1 Yes Current DateDEF1 No Old DateGHI1 Yes Old DateJKL1 yes Current DateJKL1 No Old Datei need to select only EMP ID for the above table for which Flag is set to Yes and Processing Date is old Date.Thank youSantosh