i have solved the problem....this is my sql-hotspot.conf
    # Set to 'yes' to read radius clients from the database ('nas' table)
    readclients = yes
    ## Table to keep radius client info
    nas_table = "nas_10"
    #######################################################################
    #  NAS Query
    #######################################################################
    #  This query retrieves the radius clients
    #
    #  0. Row ID (currently unused)
    #  1. Name (or IP address)
    #  2. Shortname
    #  3. Type
    #  4. Secret
    #######################################################################
    nas_query = "SELECT id, nasip, shortname, secret FROM ${nas_table}"

i just do the stupid trial and error....avrakadavra.....
mysql> desc nas_10;
+-------------+--------------+------+-----+---------------+----------------+
| Field       | Type         | Null | Key | Default       | Extra          |
+-------------+--------------+------+-----+---------------+----------------+
| id          | int(10)      | NO   | PRI | NULL          | auto_increment |
| nasip       | varchar(128) | NO   | MUL | NULL          |                |
| shortname   | varchar(32)  | YES  |     | NULL          |                |
| community   | varchar(50)  | YES  |     | NULL          |                |
| description | varchar(200) | YES  |     | RADIUS Client |                |
| secret      | varchar(60)  | NO   |     | secret        |                |
| tgl_pasang  | date         | NO   |     | NULL          |                |
+-------------+--------------+------+-----+---------------+----------------+

7 rows in set (0.00 sec)

i place 'secret' on 6th field. and the query works......
but i still confuse .......WHY ???

2008/9/17 Alan DeKok <aland@deployingradius.com>

fibie roosadhy wrote:
> dear all,
> i use command 'radiusd -X' to debug.i found this :
> rlm_sql (hotspot): - generate_sql_clients
> rlm_sql (hotspot): Query: SELECT * FROM nas_10

 You edited the default queries, and broke the server.

 Don't do that unless you understand the queries, and understand what
they're doing.

 Alan DeKok.
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