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Getting output parameter from stored proc - parameter mismat

 
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mike
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PostPosted: Thu Sep 18, 2003 3:10 am    Post subject: Getting output parameter from stored proc - parameter mismat Reply with quote


I have a table in Interbase 7 and a D7 program which tries to call a stored
procedure. Whenever I ExecProc for that stored proc, I get the error
"Dynamic SQL Error, Parameter mismatch for procedure RET_TWO". I've tried
TADOCommand and TADODataset...all with the same results. Please help!

Here is my interbase stored proc:

CREATE PROCEDURE RET_TWO
RETURNS (
NEWID INTEGER)
AS
BEGIN
NEWID=2;
END

Here is my D7 code (the connection is open) for accessing the TADOCommand:

ProcedureName := 'RET_TWO';
Parameters.Refresh;
X := Parameters.Count;
// X is 0 here - shouldn't this show 1 ???
Parameters.Clear;
Parameters.CreateParameter('NEWID',ftInteger,pdOutput,4,0);
X := Parameters.Count;
// X is 1 here
ExecProc;

The fact that Parameters.Count is 0 after a refresh suggest delphi does not
think ANY parameters exist. Please help.

Thanks, Mike


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mike
Guest
PostPosted: Sat Sep 20, 2003 2:21 pm    Post subject: Re: Getting output parameter from stored proc - parameter mi Reply with quote


Ok, I figured this one out!!!

I was using the MS OLEDB->ODBC then ODBC->Interbase drivers. I guess ODBC
will not respond with the name of parameters - only a real OLEDB driver
(provider) will....

-Mike-

"mike" <mike (AT) n-o-s-p-a-m (DOT) ocg.ca> wrote

Quote:
I have a table in Interbase 7 and a D7 program which tries to call a
stored
procedure. Whenever I ExecProc for that stored proc, I get the error
"Dynamic SQL Error, Parameter mismatch for procedure RET_TWO". I've tried
TADOCommand and TADODataset...all with the same results. Please help!

Here is my interbase stored proc:

CREATE PROCEDURE RET_TWO
RETURNS (
NEWID INTEGER)
AS
BEGIN
NEWID=2;
END

Here is my D7 code (the connection is open) for accessing the TADOCommand:

ProcedureName := 'RET_TWO';
Parameters.Refresh;
X := Parameters.Count;
// X is 0 here - shouldn't this show 1 ???
Parameters.Clear;
Parameters.CreateParameter('NEWID',ftInteger,pdOutput,4,0);
X := Parameters.Count;
// X is 1 here
ExecProc;

The fact that Parameters.Count is 0 after a refresh suggest delphi does
not
think ANY parameters exist. Please help.

Thanks, Mike






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