Обсуждение: UTF-8 safe ascii() function

Dear all,

I would like to transform UTF-8 strings into Java-Unicode. Example :
- Latin1 : 'é'
- UTF-8 : 'é'
- Java Unicode = '\u00233'

Basically, a Unicode compatible ascii() function would be fine.
ascii('é') should return 233.

1) Has anyone written an ascii UTF-8 safe wrapper to ascii() function? If yes,
would you be so kind to publish this function on the list.

2) Are there plans to add an ascii() UTF-8 safe function to PostrgeSQL?

Best regards,
Jean-Michel POURE

Postgres 7.2
I have an interval selected from a max(occurance) - min(occurance) where
bla.
I now want to multiply this by a rate - to create a charge...

If I use to_char( interval, 'SSSS');
I will get a seconds conversion - but that works on seconds since midnight -
hence
with a one day period.

Are there any better ways of converting a timestamp to an integer?


Thanks

Gareth

EXTRACT is your friend :)

SELECT EXTRACT(EPOCH FROM max(occurrance) - min(occurrance))::integer ;

- brian

k=# SELECT EXTRACT(EPOCH FROM now() - '2001-01-01') ;
   date_part
----------------
 43583467.94995
(1 row)


On Mon, 20 May 2002, Gareth Kirwan wrote:

>
> Postgres 7.2
> I have an interval selected from a max(occurance) - min(occurance) where
> bla.
> I now want to multiply this by a rate - to create a charge...
>
> If I use to_char( interval, 'SSSS');
> I will get a seconds conversion - but that works on seconds since midnight -
> hence
> with a one day period.
>
> Are there any better ways of converting a timestamp to an integer?
>
>
> Thanks
>
> Gareth
>
>
>
> ---------------------------(end of broadcast)---------------------------
> TIP 5: Have you checked our extensive FAQ?
>
> http://www.postgresql.org/users-lounge/docs/faq.html
>

Wm. Brian McCane                    | Life is full of doors that won't open
Search http://recall.maxbaud.net/   | when you knock, equally spaced amid those
Usenet http://freenews.maxbaud.net/ | that open when you don't want them to.
Auction http://www.sellit-here.com/ | - Roger Zelazny "Blood of Amber"

Oh :(

I'd given up waiting for a response.
Thanks though Brian ... I currently have the triggered function:

CREATE FUNCTION logSession () RETURNS opaque AS '
    DECLARE
    client_rate    numeric(10,2);
    period         interval;
    to_charge    numeric(10,2);
    BEGIN
        SELECT INTO client_rate rate from clients c where c.id=OLD.client;
        SELECT INTO period max(time) - min(time) FROM convs WHERE
session_id=OLD.id;
        SELECT INTO to_charge (to_number(to_char(period, ''SSSS''), ''99999D99'')
/ 60 * client_rate);

        INSERT INTO previous_sessions SELECT * from current_sessions c WHERE
c.id=OLD.id;
        INSERT INTO logged_convs SELECT * from convs c WHERE c.session_id=OLD.id;

        INSERT INTO session_logs (session_id, time, length, charge, paid) VALUES
(OLD.id,OLD.time,period, to_charge, ''false'');
    RETURN OLD;
    END;'
language 'plpgsql';


So I'll try to build it into that.

-----Original Message-----
From: Brian McCane [mailto:bmccane@mccons.net]
Sent: 20 May 2002 17:35
To: Gareth Kirwan
Cc: pgsql-admin@postgresql.org
Subject: Re: [ADMIN] Interval to number



EXTRACT is your friend :)

SELECT EXTRACT(EPOCH FROM max(occurrance) - min(occurrance))::integer ;

- brian

k=# SELECT EXTRACT(EPOCH FROM now() - '2001-01-01') ;
   date_part
----------------
 43583467.94995
(1 row)


On Mon, 20 May 2002, Gareth Kirwan wrote:

>
> Postgres 7.2
> I have an interval selected from a max(occurance) - min(occurance) where
> bla.
> I now want to multiply this by a rate - to create a charge...
>
> If I use to_char( interval, 'SSSS');
> I will get a seconds conversion - but that works on seconds since
midnight -
> hence
> with a one day period.
>
> Are there any better ways of converting a timestamp to an integer?
>
>
> Thanks
>
> Gareth
>
>
>
> ---------------------------(end of broadcast)---------------------------
> TIP 5: Have you checked our extensive FAQ?
>
> http://www.postgresql.org/users-lounge/docs/faq.html
>

Wm. Brian McCane                    | Life is full of doors that won't open
Search http://recall.maxbaud.net/   | when you knock, equally spaced amid
those
Usenet http://freenews.maxbaud.net/ | that open when you don't want them to.
Auction http://www.sellit-here.com/ | - Roger Zelazny "Blood of Amber"