not sure how to write stored procedure for the php function below. looking to write a stored procedure that will check for duplication in a range.
function check_for_duplication($job_no) {
global $connection;
$query = "SElECT COUNT (*) ";
$query .= "FROM jobs ";
$query .= "WHERE job_no = {$job_no}";
$query .= "AND start <= {$new_end}";
$query .= "AND end >= {$new_start}";
$job_set = mysqli_query($connection, $query);
confirm_query($job_set);
if($job = mysqli_num_rows($job_set)) {
return $job_set;
} else {
return null;
}
}
You might try something like this.
DROP FUNCTION IF EXISTS check_for_duplication
CREATE FUNCTION check_for_duplication
(varJobNo IN datatype,
varNewEnd IN datatype,
varNewStart IN datatype)
RETURNS CURSOR
BEGIN
// this is where we declare our variables
DECLARE var_cursor CURSOR;
// begin logic
SELECT COUNT (*) INTO var_cursor
FROM jobs
WHERE job_no=varJobNo AND
start<=varNewEnd AND
end>=varNewStart;
RETURN var_cursor;
END;
This is just a basic function that will still require you to do some of the logic in your php but you can adjust the function to do more. I know there is a way to use a stored procedure to return data but it is easier for me to do it this way. Functions are for returning data while a procedure is to perform some action without returning anything. I hope this helps you out.
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