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FOR i IN REVERSE documentation error?
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* FOR i IN REVERSE documentation error?
@ 2001-10-08 03:08 Norman Megill <nmegill@bostoninformation.com>
  2001-10-12 21:19 ` Re: FOR i IN REVERSE documentation error? Bruce Momjian <pgman@candle.pha.pa.us>
  0 siblings, 1 reply; 2+ messages in thread

From: Norman Megill @ 2001-10-08 03:08 UTC (permalink / raw)
  To: pgsql-docs

In the 7.2 documentation, Section 23.2.6.2, at
http://postgresql.crimelabs.net/devel-corner/docs/postgres/plpgsql-description.html

it shows the example:

  FOR i IN REVERSE 1..10 LOOP
     -- some expressions here
  END LOOP;

This loop does nothing.  I think it should be:

  FOR i IN REVERSE 10..1 LOOP
     -- some expressions here
  END LOOP;

which does work (10 iterations).

Note:  This error is also in the 7.1 documentation.  I tested
it in 7.1 but not 7.2.

Thank you,
Norm Megill



^ permalink  raw  reply  [nested|flat] 2+ messages in thread

* Re: FOR i IN REVERSE documentation error?
  2001-10-08 03:08 FOR i IN REVERSE documentation error? Norman Megill <nmegill@bostoninformation.com>
@ 2001-10-12 21:19 ` Bruce Momjian <pgman@candle.pha.pa.us>
  0 siblings, 0 replies; 2+ messages in thread

From: Bruce Momjian @ 2001-10-12 21:19 UTC (permalink / raw)
  To: Norman Megill <nmegill@bostoninformation.com>; +Cc: pgsql-docs


I can confirm in testing this function that you are correct.  I have
fixed the documentation as you suggested.  Thanks.

---------------------------------------------------------------------------

drop function bb();
create function bb () returns integer as 'declare i integer;
begin
for i in reverse 10..1 LOOP
insert into aa values (i); 
END LOOP;
return 0;
end'
LANGUAGE 'plpgsql';



> In the 7.2 documentation, Section 23.2.6.2, at
> http://postgresql.crimelabs.net/devel-corner/docs/postgres/plpgsql-description.html
> 
> it shows the example:
> 
>   FOR i IN REVERSE 1..10 LOOP
>      -- some expressions here
>   END LOOP;
> 
> This loop does nothing.  I think it should be:
> 
>   FOR i IN REVERSE 10..1 LOOP
>      -- some expressions here
>   END LOOP;
> 
> which does work (10 iterations).
> 
> Note:  This error is also in the 7.1 documentation.  I tested
> it in 7.1 but not 7.2.
> 
> Thank you,
> Norm Megill
> 
> ---------------------------(end of broadcast)---------------------------
> TIP 5: Have you checked our extensive FAQ?
> 
> http://www.postgresql.org/users-lounge/docs/faq.html
> 

-- 
  Bruce Momjian                        |  http://candle.pha.pa.us
  pgman@candle.pha.pa.us               |  (610) 853-3000
  +  If your life is a hard drive,     |  830 Blythe Avenue
  +  Christ can be your backup.        |  Drexel Hill, Pennsylvania 19026



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