 | | | mysql++ and stored procedures | mysql++ and stored procedures 2007-06-12 - By William F. Dowling
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Does mysql++ handle stored procedures? I didn't see anything in the
docs. When I tried, I an exception was thrown with this message:
PROCEDURE test.get_times_cited can't return a result set in the given
context
I'm new to mysql++, and fairly new to mysql too, so this is probably
something really simple; I just don't know how to fix the complaint.
Details:
This select statement works fine:
select count(src_ck) from cites where cites.cite_ck='ck2';
+-- ---- ---- --+
| count(src_ck) |
+-- ---- ---- --+
| 1 |
+-- ---- ---- --+
1 row in set (0.11 sec)
I created this procedure:
create procedure get_times_cited(ck varchar(32)) select count(src_ck)
from cites where cites.cite_ck=ck;//
I can call it from a command line client:
call get_times_cited('ck2');
+-- ---- ---- --+
| count(src_ck) |
+-- ---- ---- --+
| 1 |
+-- ---- ---- --+
1 row in set (0.11 sec)
I coded it like this:
try {
mysqlpp::Query query = con.query();
// (*)
// query << "select count(src_ck) from cites where cites.cite_ck="
// << mysqlpp::quote << ck;
query << "call get_times_cited(" << mysqlpp::quote << ck << ")";
mysqlpp::Result res = query.store();
if (res) {
mysqlpp::Row row = res.at(0); // count returns one row
*result = row.at(0).get_string();
}
}
catch (const mysqlpp::BadQuery& er) {
// Handle any query errors
std::cerr << "Query error: " << er.what() << std::endl;
}
That works fine if I use the two lines after the (*) comment, but throws
an exception as I've coded it here.
Any help would be gratefully appreciated. Thanks,
Will
--
William F Dowling
william.dowling@(protected)
www.scientific.thomson.com
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