[SR-Users] Sqlops

Hi all, I am querying mysql db inside routing block in kamailio.cfg ERROR: db_mysql [km_dbase.c:128]: db_mysql_submit_query(): driver error on query: Unknown column '8d77' in 'where clause' (1054) Aug 7 18:09:22 localhost /usr/local/sbin/kamailio[25333]: ERROR: <core> [db_query.c:181]: db_do_raw_query(): error while submitting query Aug 7 18:09:22 localhost /usr/local/sbin/kamailio[25333]: ERROR: sqlops [sql_api.c:265]: sql_do_query(): cannot do the query [select * from vca_asterisk where front_id=8d77] I'm getting the above error message when, variable front_id=8d77 is alphanumeric. It's working fine when front_id is pure numeric. eg: front_id=877 Database column front_id is VARCHAR(255). Any suggestions to solve this error? Thanks, Arish