On Wed, 16 Aug 2000, Stephan Szabo wrote on pgsql-general@postgresql.org:
(sorry for the crossposting, just to tell the list that I now switched to
the right one hopefully)
> I think the thing is that most people don't have basic examples, they
Perhaps someone knows one nice doc. I only found some hints for
ma problems in the PGSQL-Part of the Bruce Momjian book. But
may be PGSQL is in fact the thing I want and so I may possibly stick to
that. Now here is the first question about that:
web=# create function atTest ( varchar )
web-# returns bool
web-# As ' BEGIN
web'# Select * From Mitarbeiter Where FName = $1 ;
web'# IF NOT FOUND THEN
web'# RETURN ''f'' ;
web'# ELSE
web'# RETURN ''t'' ;
web'# END IF ;
web'# END; '
web-# language 'plpgsql' ;
CREATE
web=# SELECT attest ( 'Tille' ) ;
ERROR: unexpected SELECT query in exec_stmt_execsql()
web=#
Could somebody enlighten me, what here goes wrong?
> have whatever things they particularly needed. However, there
> are a couple defined in the create_function_2 regression test.
Thanks for your hint. I tried to check these examples, but found that
setof beast is not well documented.
I tested kind of this
> CREATE FUNCTION hobbies(person)
> RETURNS setof hobbies_r
> AS 'select * from hobbies_r where person = $1.name'
> LANGUAGE 'sql';
But it returns just did:
web=# SELECT my_test ( ) ;
?column?
-----------
136437368
136437368
136437368
...
I had the hope to get the contents of the table like if I would
do 'SELECT * FROM table;'
Also kind of
RETURNS SETOF varchar
AS ' SELECT * FROM table ; '
doesn't do the trick, because this is syntactical wrong.
To explain what I'm intendet to do: I want to port some servlets
from MS-SQL to PostgreSQL. The servlets contain code like:
rs = stmt.executeQuery("stored_procedure arg1, arg2");
while ( rs.next() )
do_something(rs.getString("col1"), rs.getString("col2"),
rs.getString("col3"), rs.getString("col4") );
So I have to serve my servlet with any kind of datasets and I really
can't imagine, that such a basic task isn't possible with PostgeSQL.
Kind regards
Andreas.
