Re: Multiple Index's - Mailing list pgsql-sql

From Mark Volpe
Subject Re: Multiple Index's
Date
Msg-id 39CA456F.CB851388@epamail.epa.gov
Whole thread Raw
In response to Multiple Index's  ("Brian C. Doyle" <bcdoyle@mindspring.com>)
List pgsql-sql
CREATE TABLE user_info(user_id name, entry_date date, info text);
CREATE UNIQUE INDEX user_info_key ON user_info(user_id, entry_date);

"Brian C. Doyle" wrote:
> 
> Hello all,
> 
> How would I prevent a user from submitting information to a table once they
> have already done so for that day.  I would need them to be able
> information on future dates as well as have information in the table from
> past dates from that user.
> 
> I am looking for something like insert user_id, date, info where user_id
> and date are not the same... does that make sense?
> 
> Brian C. Doyle


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