UPDATE/DELETE in mysql and get the list of affected row ids?

Question

Is there an efficient way to get the list of affected row IDs (not the # of affected rows via PHP\'s mysql_affected_rows(), but the actual row ids that were affected) from a

Answer 1

try this, it will return the updated ids as "1,2,3....":

SET @uids := '';
UPDATE table_name
   SET some_col= 'some_val'
 WHERE some_col= 'some_val'
   AND ( SELECT @uids := CONCAT_WS(',', @uids, id) );
SELECT TRIM(LEADING ',' FROM @uids);