Re: [Solved] A result was returned by the statement, when - Mailing list pgsql-jdbc

Timothy,

What actually happens is that the select returns the values of the
functions.

So simply if you have a select foo() where foo returns 1 then you will
get the following a column named foo, and a value of 1 for it,
regardless of what foo does internally.

The result set is from the select, not the function.

Dave
On Sun, 2002-11-03 at 21:04, Timothy Reaves wrote:
>     I finally figured this out.  For anyone that might want to know, what I
> nneded was this:
> if (statement.execute(sqlStatementString)) {
>     //ResultSet Available
>     ResultSet rs = statement.getResultSet();
>     rs.next();
>     result = rs.getInt(1);
> }else{
>     //Update count or no result available
>     result = statement.getUpdateCount();
> }
>
>     For my functions, a ResultSet is returned, which does NOT make sence as
> the functions were declared to return type integer.  Oh well.
>
>
> On Sun, 3 Nov 2002 17:20:18 -0500
> Timothy Reaves <treaves@silverfields.com> wrote:
>
> >     Hello all.
> >
> >     I'm using PostgreSQL 7.2.2, with the latest JDBC driver, JDK
> >     1.4.1, under
> > linux.
> >
> >     In my database, I have several functions defined, and I use them
> >     to
> > insert & update rows in the database.  Here is an example.
> > create function insert_artist (varchar, int) returns bigint as '
> >         insert into artist (name, genre_loid)
> >                 values ($1, $2);
> >         select currval(\'loid_seq\');'
> >         language 'sql';
> > create function update_artist (varchar, bigint, bigint) returns integer
> > as'
> >         update artist
> >                 set name = $1, genre_loid = $2
> >                 where loid = $3;
> >         select 1;'
> >         language 'sql';
> >
> >     The insert_artist function returns the last value assigned by a
> >     sequence,
> > and update_artist simply returns the integer 1.
> >
> >     When executed from psql with: select x_artist(...); all is as
> >     expected.
> > When I execute it from Java via:
> > Statement statement = connection.createStatement();
> > int result = statement.executeUpdate("select x_artist(...)");
> > the row is updated or inserted, as is the case, but I get the follwoing
> > exception.
> > A result was returned by the statement, when none was expected.
> >     at org.postgresql.jdbc2.Statement.executeUpdate(Statement.java:75)
> >     at com.silverfields.dbAccess.DBObject.save(DBObject.java:205)
> >
> >
> >     What have I done incorrectly?  Both functions are defined to
> >     return a
> > single value, and Statement.executeUpdate(String) returns a single
> > value.
> >
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