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Thread: plpgsql strangeness with select into

plpgsql strangeness with select into

From
Reinoud van Leeuwen
Date:
I'm debugging a trigger in plpgsql and for some reason or the "select 
into <var>" does not seem to work. Here is an unaltered snippet of my 
trigger code: 
      raise notice ''this id      : %'',NEW.id;     
      select into i_hierarchy_id              hierarchy_id         from link_def LD,             link L,
object_linkOL       where OL.id = NEW.id         and L.id  = OL.link_id         and LD.id = L.link_def_id;
 
       raise notice ''i_hierarchy_id: %'',i_hierarchy_id;


in the log this results in:

NOTICE:  this id      : 5265
NOTICE:  i_hierarchy_id: <NULL>

but when I perform the query on the command line I do get a result:

select hierarchy_id  from link_def LD,      link L,      object_link OLwhere OL.id = 5264  and L.id  = OL.link_id  and
LD.id= L.link_def_id;
 
hierarchy_id
--------------           1
(1 row)

i_hierarchy_id is declared as integer and is not used before this code nor 
as a column name anywhere.

Does anyone have a clue what is going wrong? I use Postgresql 7.3.3 on 
FreeBSD 4.5.

-- 
__________________________________________________
"Nothing is as subjective as reality"
Reinoud van Leeuwen    reinoud.v@n.leeuwen.net
http://www.xs4all.nl/~reinoud
__________________________________________________

Re: plpgsql strangeness with select into

From
Robert Treat
Date:
On Fri, 2003-07-18 at 11:24, Reinoud van Leeuwen wrote:
> I'm debugging a trigger in plpgsql and for some reason or the "select 
> into <var>" does not seem to work. Here is an unaltered snippet of my 
> trigger code: 
> 
>        raise notice ''this id      : %'',NEW.id;     
> 
>        select into i_hierarchy_id 
>               hierarchy_id 
>          from link_def LD,
>               link L,
>               object_link OL
>         where OL.id = NEW.id
>           and L.id  = OL.link_id
>           and LD.id = L.link_def_id;
> 
>         raise notice ''i_hierarchy_id: %'',i_hierarchy_id;
> 
> 
> in the log this results in:
> 
> NOTICE:  this id      : 5265
> NOTICE:  i_hierarchy_id: <NULL>
> 
> but when I perform the query on the command line I do get a result:
> 
> select hierarchy_id 
>   from link_def LD,
>        link L,
>        object_link OL
>  where OL.id = 5264
>    and L.id  = OL.link_id
>    and LD.id = L.link_def_id;
> 
>  hierarchy_id
> --------------
>             1
> (1 row)
> 
> i_hierarchy_id is declared as integer and is not used before this code nor 
> as a column name anywhere.
> 
> Does anyone have a clue what is going wrong? I use Postgresql 7.3.3 on 
> FreeBSD 4.5.
> 

try giving it a default of 0 in the declare statement, if that doesn't
work, post the whole code for the function.

Robert Treat
-- 
Build A Brighter Lamp :: Linux Apache {middleware} PostgreSQL

Re: plpgsql strangeness with select into

From
Philip Warner
Date:
At 05:24 PM 18/07/2003 +0200, Reinoud van Leeuwen wrote:
>Does anyone have a clue what is going wrong? I use Postgresql 7.3.3 on
>FreeBSD 4.5.

Is it a before or after trigger. If 'before', are you trying to reference 
data that does not exist yet?



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