[Fwd: Re: nested elseif woes]

Ivan Sergio Borgonovo wrote:

I just re-checked the docs and see that ELSE IF requires an END for each ELSE IF:
>    if 1=2 then
>        if 1=2 then
>            select 1;
>        else
            if 1=3 then
>                select 2;
            END IF;
>        else
            if 1=4 then
>                if 1=5 then
>                    select 3;
                END IF;
>                else
>                    select 4;
>                end if;
            END IF;
>        end if;
>    end if;



>First thanks to Tom Lane who helped me promptly.
>
>Now let's come to the problem:
>
>create or replace function testa( )
>    returns char(32) as
>'
>begin
>    if 1=2 then
>        if 1=2 then
>            select 1;
>        elseif 1=3 then
>            select 2;
>        elseif 1=4 then
>            if 1=5 then
>                select 3;
>            else
>                select 4;
>            end if;
>        end if;
>    end if;
>    return md5(''aaaa'');
>end;
>' language plpgsql;
>
>test1=# select * from testa();
>ERROR:  syntax error at or near "if"
>CONTEXT:  compile of PL/pgSQL function "testa" near line 14
>
>
This is odd, I replaced the else ifs with elsif and it worked on 7.4. My
7.3 documentation says that else if and elsif are equivalent.
imp=# select * from testa();
             testa
----------------------------------
74b87337454200d4d33f80c4663dc5e5
(1 row)

My test code (yours, slightly modified):
   drop function testa( );


   create or replace function testa( )
       returns char(32) as
   '
   begin
       if 1=2 then
           if 1=2 then
               select 1;
           elsif 1=3 then
               select 2;
           elsif 1=4 then
               if 1=5 then
                   select 3;
               else
                   select 4;
               end if;
           end if;
       end if;
       return md5(''aaaa'');
   end;
   ' language plpgsql;


   select * from testa();

>I made several test functions with similar structure with no
>improvements.
>I can't even figure a pattern. I get errors on if, else, and elseif.
>Till now the culprit seems to be elseif. Whenever I write test
>functions without elseif I get no errors.
>Did I misinterpreted the docs (37.7.2.4)?
>
>I really can't see the problem.
>
>I'm running 7.4.2-1 on Debian Sarge.
>
>
>To be less annoying to the list, could anyone point me to somewhere
>where I could look at functions written by others.
>Any good project with enough complicated functions to be useful to
>learn.
>
>
>thx
>
>---------------------------(end of broadcast)---------------------------
>TIP 6: Have you searched our list archives?
>
>               http://archives.postgresql.org
>
>
>
>
Ron