freeradius配置问题

Question

大家好，请问在sql.conf 配置文件中authorize_reply_query 和authorize_check_query 的用法

#        authorize_check_query = "SELECT id,UserName,Attribute,Value,op FROM ${authcheck_table} WHERE STRCMP(Username, '%{SQL-User-Name}') = 0 ORDER BY id"
#        authorize_reply_query = "SELECT id,UserName,Attribute,Value,op FROM ${authreply_table} WHERE STRCMP(Username, '%{SQL-User-Name}') = 0 ORDER BY id"

里面那个op怎么使用