mysql & stored procedures
am 04.02.2005 16:53:02 von harpHi!
DBMS - MySql5.0.1-alpha:
Driver - myodbc 3.51:
I created a table in my database over command line.
mysql> create table
customers(firstname,familyname,address,telno,accountno,firm)
Filled it with records and tested it - it worked.
Then I created a stored procedure:
delimiter $
mysql> create procedure spFirm(IN company char(15), IN year INT)
BEGIN
IF year = 2005 then
select * from customers
where firm = company;
else
select * from customers;
end if;
END$
It was okay and I tested it as follows
mysql> call spFirm('firmname',2005)$
It delivered the right results.
Now I wanted to test and process the results over MyODBC. The connections
were ok.
//...
stmt = "call spFirm('Seqis',2005)$";
ret = SQLExecDirect(hstmt, stmt.c_str(), stmt.Length());
while ((ret = SQLFetch(hstmt)) != SQL_NO_DATA){
SQLRowCount(hstmt, &nRows);
SQLNumResultCols(hstmt, &nCols);
//...
}
Both SQLRowCount (with nRows) and SQLNumResultCols (with nCols) do deliver
0. But when I use normal "select * from customers" - I do get the right
results.
What is the best way to go about stored procedures here? I know (as newbie)
that I'm missing something, but I cannot figure it out.
Who can give me some tipps on how to go about it? Examples are also very
much welcomed.
Thanks in anticipation,
Harp
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