Thread: help with trigger

help with trigger

From
Dino Vliet
Date:
Hi folks,
I'm new to PostgreSQL and am busy tring to work with
it. Of pl/pgsql I know even less and that's the part I
have a question on right now. I have this nice example
to get me started with
pl/pgsql.......

I have a table with the schedule of a service my sport
team wants to offer:

Table Schedule
name       length       startdate     enddate    day
soccer       4          01-sep-2004  30-sep-2004   Mon
tennis       4          01-sep-2004  30-sep-2004   Wed

This means, that I want to offer soccer weekly, for a
total of 4 weeks as from 1st sep till 30 sep on
Mondays!

Now, what I do want is a second table that creates all
the dates on which there will be soccer training if I
finish entering this record in table Schedule. So,
then the other table, called ScheduledDates has the
follwing records:

Table ScheduleDates
name        occurrence  date
soccer       1          06-sep-2004
soccer       2          13-sep-2004
soccer       3          20-sep-2004
soccer       4          27-sep-2004

Can someone help me with writing this as a trigger in
pl/pgsql?

Another variant is that the trigger starts when the
table Schedule is populated, but it not just
automatically creates the 4 records as described
above, but because the date 20-sep-2004 is a national
holiday and is in table Exceptions, the sheme just
shifts one up and the occurrence 4 becomes occurrence
3 and the last schedule date becomes monday the 4th of
october!

I hope you can help me with this one, will put me way
up the learning curve of pl/pgsql




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Re: help with trigger

From
Dino Vliet
Date:
Maybe I've missed it but can someone plese help me
with this?

Brgds and thanks in advance,

--- Dino Vliet <dino_vliet@yahoo.com> wrote:

> Hi folks,
> I'm new to PostgreSQL and am busy tring to work with
> it. Of pl/pgsql I know even less and that's the part
> I
> have a question on right now. I have this nice
> example
> to get me started with
> pl/pgsql.......
>
> I have a table with the schedule of a service my
> sport
> team wants to offer:
>
> Table Schedule
> name       length       startdate     enddate    day
> soccer       4          01-sep-2004  30-sep-2004
> Mon
> tennis       4          01-sep-2004  30-sep-2004
> Wed
>
> This means, that I want to offer soccer weekly, for
> a
> total of 4 weeks as from 1st sep till 30 sep on
> Mondays!
>
> Now, what I do want is a second table that creates
> all
> the dates on which there will be soccer training if
> I
> finish entering this record in table Schedule. So,
> then the other table, called ScheduledDates has the
> follwing records:
>
> Table ScheduleDates
> name        occurrence  date
> soccer       1          06-sep-2004
> soccer       2          13-sep-2004
> soccer       3          20-sep-2004
> soccer       4          27-sep-2004
>
> Can someone help me with writing this as a trigger
> in
> pl/pgsql?
>
> Another variant is that the trigger starts when the
> table Schedule is populated, but it not just
> automatically creates the 4 records as described
> above, but because the date 20-sep-2004 is a
> national
> holiday and is in table Exceptions, the sheme just
> shifts one up and the occurrence 4 becomes
> occurrence
> 3 and the last schedule date becomes monday the 4th
> of
> october!
>
> I hope you can help me with this one, will put me
> way
> up the learning curve of pl/pgsql
>
>
>
>
> __________________________________
> Do you Yahoo!?
> New and Improved Yahoo! Mail - 100MB free storage!
> http://promotions.yahoo.com/new_mail
>




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