From: | Barry Lind <barry(at)xythos(dot)com> |
---|---|
To: | Dave Cramer <Dave(at)micro-automation(dot)net> |
Cc: | Larry Riedel <larryr(at)saturn(dot)sdsu(dot)edu>, "pgsql-jdbc(at)postgresql(dot)org" <pgsql-jdbc(at)postgresql(dot)org> |
Subject: | Re: 7.3 Cursors/ResultSets/CallableStatements |
Date: | 2002-08-26 13:41:54 |
Message-ID: | 3D6A3022.6060000@xythos.com |
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Thread: | |
Lists: | 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
>>>
>>>
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>
>
>
>
>
>
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