Mysql multiple parameters with multiple queries inside stored procedure - mysql

Question

I need to create a 'select' mysql procedure that will accept multiple parameters, inline with this the procedure will select to other tables
Objective
Stored procedure must accept multiple parameters
Using the multiple parameters, procedure should select on table_a, table_b and table_c
Currently i am using this code (it accepts multiple parameter but I don't know how to modify it so it would do another select on table_b and table_c)
DELIMITER //
CREATE PROCEDURE select_multiple_object(IN user_ids VARCHAR(65535))
BEGIN
SET #query = CONCAT ('SELECt * FROM table_a WHERE userid IN (',user_ids,')');
PREPARE stmt FROM #query;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;
END //
DELIMITER ;
What I really want to achieve is something like this:
DELIMITER //
CREATE PROCEDURE select_multiple_object(IN user_ids VARCHAR(65535))
BEGIN
SET #query = CONCAT ('
SELECt * FROM table_a WHERE userid IN (',user_ids,');
SELECt * FROM table_b WHERE userid IN (',user_ids,');
SELECt * FROM table_c WHERE userid IN (',user_ids,');
');
PREPARE stmt FROM #query;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;
END //
DELIMITER ;
CALL select_multiple_object('1,2,3')

Answer 1

Assemble your MySQL query first, then send the query, similar to the following:
$parameter = "user_ids";
$table = "table_a";
$query = 'SELECT * FROM ' . $parameter . ' WHERE userid IN (",' . $parameter . ',")';
$result = mysql_query($query);
To input multiple parameters, simply use a loop to repeat this process as needed.