Question

I have a query, which when run from within phpMyAdmin, it works, however when integrated within a website written in Perl, it fails and throws errors.
Both are run with a connection to the same database, and from coding/formatting side when integrated into the Website, all is correct and the same as other queries.

Any help with this would be much appreciated – Thanks!

MySQL Query:

CREATE TEMPORARY TABLE tmp_lecture_days (
timeslot_id int(50)
);
INSERT INTO tmp_lecture_days (timeslot_id)
SELECT DISTINCT tab_appointment.timeslot_id
FROM tab_appointment WHERE lecture_id = '1115';
SELECT COUNT(timeslot_id)
FROM tmp_lecture_days;

MySQL Query in Perl:

            $query
                = &statement_database(
                    "CREATE TEMPORARY TABLE tmp_lecture_days (
                    timeslot_id int(50)
                    );
                    INSERT INTO tmp_lecture_days (timeslot_id)
                    SELECT DISTINCT tab_appointment.timeslot_id
                    FROM tab_appointment WHERE lecture_id = '1115';
                    SELECT COUNT(timeslot_id)
                    FROM tmp_lecture_days;");

             my ($days) = $query->fetchrow_array;

Error Log:

7.3.2011 10:14:12 error You have an error in your SQL syntax;
check the manual that corresponds to your MySQL server version for the right syntax to use near ‘;
7.3.2011 10:14:12 error INSERT INTO tmp_lecture_days (timeslot_id)
7.3.2011 10:14:12 error SELECT DISTINCT tab_appoi’ at line 3

Answer 1

I think the following query is equivalent to the 3 queries:

SELECT COUNT(DISTINCT timeslot_id) FROM tab_appointment
    WHERE lecture_id = '1115'

For more details, check the MySQL reference manual for COUNT() here.