Re: 7.3 Cursors/ResultSets/CallableStatements
От | Barry Lind |
---|---|
Тема | Re: 7.3 Cursors/ResultSets/CallableStatements |
Дата | |
Msg-id | 3D6A3022.6060000@xythos.com обсуждение исходный текст |
Ответ на | Re: 7.3 Cursors/ResultSets/CallableStatements (Barry Lind <barry@xythos.com>) |
Список | pgsql-jdbc |
Dave, We need to use a different syntax for how we build the query in 7.3 than in 7.2 if we want to support functions returning resultsets. Currently the code generates a query that looks like the following: select func(); in 7.3 that becomes: select * from func(); If the function is a regular function the results of the two queries are the same. However in 7.3 if the function returns a resultset you will get back the resultset of the function instead of a result set that contains one row and one column with the return value of the function. thanks, --Barry Dave Cramer wrote: >Barry, > >I think notionally the idea would be to call a stored proc which >returned a cursor, and when result set's supported cursors this would be >feasible. I'm still not sure how we tell if the stored proc returned a >cursor? > >Dave >On Mon, 2002-08-26 at 07:34, Barry Lind wrote: > > >>Larry, >> >>The jdbc driver will not support returning result sets from >>callableStatements in 7.3. You will need to use a regular >>Statement/Prepared Statement object and execute a 'select * from func()' >>sql statement. Off the top of my head, I'm not sure how the jdbc >>callableStatement syntax is supposed to handle resultsets. >> >>Dave, correct me if I am wrong here. >> >>thanks, >>--Barry >> >> >>Larry Riedel wrote: >> >> >> >>>I am interested in calling a stored procedure through >>>a CallableStatement and fetching a ResultSet a >>>few rows at a time. I have seen a few messages >>>suggesting all the pieces may be in place for doing >>>this kind of thing nicely in 7.3. Any idea when it >>>will become clear what will actually go into 7.3? >>> >>> >>>Larry >>> >>> >>>---------------------------(end of broadcast)--------------------------- >>>TIP 5: Have you checked our extensive FAQ? >>> >>>http://www.postgresql.org/users-lounge/docs/faq.html >>> >>> >>> >>> >>> >>---------------------------(end of broadcast)--------------------------- >>TIP 5: Have you checked our extensive FAQ? >> >>http://www.postgresql.org/users-lounge/docs/faq.html >> >> >> >> > > > > > >
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