如何在MySQL存储过程中使用WHERE IN

Question

How do I pass an array and use WHERE IN inside stored procedure?

Do i need to concatenate input string or something ?

Lets say

DELIMITER $$
DROP PROCEDURE IF EXISTS `abc`.`table1`$$
CREATE PROCEDURE  `abc`.`test`
(IN somestring VARCHAR(255))
BEGIN
    SELECT * FROM abc.table1 
    WHERE flight_type IN somestring
END $$
DELIMITER ;

Answer 1

You can use the string concatenation and the PREPARE statement to run dynamically built queries.

somestring must be constructed in a valid SQL format like '1','2','3'

DELIMITER $$
DROP PROCEDURE IF EXISTS `abc`.`table1`$$
CREATE PROCEDURE  `abc`.`test`
(IN somestring VARCHAR(255))
BEGIN
    @s=CONCAT("
    SELECT * FROM abc.table1 
    WHERE flight_type IN (",somestring,");")
    PREPARE stmt FROM @s;
    EXECUTE @s;
END $$
DELIMITER ;

Answer 2

You can use FIND_IN_SET() if somestring is formatted a,b,c,d :

SELECT *
FROM abc.table1
WHERE FIND_IN_SET(flight_type, somestring)

Answer 3

This should work as long as somestring is of the form

"(item1, item2, item3, ... )"

if not, you could format it accordingly inside of your SP but I'm not sure what the best practice is.