[odb-users] How to qeury one column (or some columns) in a table?

[saigut]

Hi all,


I am using odb 2.4.0, I want to query one column of a table, but don't know how to do that.


Say I have such table:
user_info:
int user_id, vchar user_name, int user_age


I want do a query like "SELECT user_id FROM user_info", but I cannot find any method to do this with odb. And after I searched on google and the odb documentation I still don't know how to do.


Can any one tell me how to qeury one column (or some columns) in a table with odb?


Thanks.


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Tony Saigut
saigut at qq.com