Selecting some column names from a database table

> Hi,
> This is probably an easily solved problem.
> I've got a "building" database table detailing information relating to the
> network vlans in each building.Table columns are split into two groups.
> Group one describes the building, where it is etc. Group two describes the
> different VLANS  available in a specific building. All the column names in
> group 2 end in _VLAN.
>  Within the buildings described in the above tabet, a client machine needs
> to perform some form of network authentication in order to a)connect to the
> network and b)  be placed in the correct  vlan. Two types of authentication
> are supported. user-id based and MAC address based. Any form of user-id
> based auth is handled somewhere else. MAC address based authentication
> requires registration of a full/partial mac address in a database table. To
> do this registration I've written a simple xforms page that allows a MAC
> address to be registered. Part of the registration is selecting the VLAN is
> to be used from a drop down list.
> I've currently got
> <sql:config>
>                 <buildings>
>                     <sql:connection>
>                         <sql:datasource>ndxml</sql:datasource>
>                         <sql:execute>
>                             <sql:query>
>                                  select
> building_name,auth_vlan,unauth_vlan,utils_vlan,dmz_vlan,ip_phone_vlan,camera_vlan,games_vlan
> from devinfo.buildings where pk_building=1
>                             </sql:query>
>                             <sql:result-set>
>                                 <metadata>
>                                    <sql:column-iterator>
>                                         <name>
>                                            <sql:get-column-name/>
>                                         </name>
>                                         <type>
> ........
> </column>
>
> etc .......
> which I use in a select1 statement when registering a MAC address. The user
> therefor specifies which VLAN they want the device to be placed in upon
> successful authentication. The problem with this is that if i add some more
> vlans to the table I'll have to add the column names to the above select
> statement. Using a "select *.." statement includes the other columns that I
> don;t want to be visible in my select1 statement. When getting hold of the
> metadata, is there any way of saying select * except for .... . Elsewhere
> I'm using an <sql:exclude.... statement when accessing column data, but
> there doesn't seem to be a way of doing that  for metadata.
>
> Checked by  Hu-fw-yhman
>
>
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