Re: nested elseif woes

Ron St-Pierre <rstpierre@syscor.com> · Mon, 10 May 2004 12:11:03 -0700

Ivan Sergio Borgonovo wrote:

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

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Ron

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