Re: Auto Adjust Age - Mailing list pgsql-general

From Jerry Sievers
Subject Re: Auto Adjust Age
Date
Msg-id 878vvnl8bw.fsf@comcast.net
Whole thread Raw
In response to Auto Adjust Age  (Carlos Mennens <carlos.mennens@gmail.com>)
Responses Re: Auto Adjust Age
Re: Auto Adjust Age
List pgsql-general
Carlos Mennens <carlos.mennens@gmail.com> writes:

> CREATE TABLE users
> (
>    id integer PRIMARY KEY UNIQUE NOT NULL, --ID
>    fname character varying(40) NOT NULL, --First name
>    lname character varying(40) NOT NULL, --Last name
>    email character varying NOT NULL, --email address
>    office integer NOT NULL, --Office number
>    dob date NOT NULL, --Date of birth
>    age integer NOT NULL --Age
> )
> ;
>
> Is there a way in SQL I can have the users 'age' be auto adjusted
> based on the 'id' & 'dob'? I would assume this is possible because if
> you have 100 employees, I doubt someone has time to sit and change
> everyone's age from 31 > 32 on their birthday. Can someone please help
> explain how this works or what the SQL code would look like assuming
> that it's possible? I have no advanced far enough to see what triggers
> and views are so perhaps it's just my level with SQL in general.

I'd suggest not storing age but instead wrapping with a view that calls
date_trunc('year', now() - dob).

If you must store the age then you have to run a daily batch to make the
bulk update.

HTH


--
Jerry Sievers
e: gsievers19@comcast.net
p: 305.321.1144

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