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Working with WHERE IN() in a MySQL Stored Procedure
Let us first create a table −
mysql> create table DemoTable -> ( -> Id int, -> Name varchar(20) -> ); Query OK, 0 rows affected (0.69 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable values(100,'Chris'); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable values(101,'Bob'); Query OK, 1 row affected (0.18 sec) mysql> insert into DemoTable values(102,'David'); Query OK, 1 row affected (0.18 sec)
Display all records from the table using select statement −
mysql> select * from DemoTable;
This will produce the following output −
+------+-------+ | Id | Name | +------+-------+ | 100 | Chris | | 101 | Bob | | 102 | David | +------+-------+ 3 rows in set (0.00 sec)
Here is the query to create a stored procedure to use WHERE IN() −
mysql> DELIMITER //
mysql> CREATE PROCEDURE whereInDemo(in input varchar(100))
-> BEGIN
-> set @Query = 'select Name from DemoTable ';
-> set @Query = CONCAT(@Query,' where Id IN (',`input`,')');
-> prepare stmt from @Query;
-> execute stmt;
-> deallocate prepare stmt;
-> END //
Query OK, 0 rows affected (0.23 sec)
mysql> DELIMITER ;Now you can call stored procedure using CALL command −
mysql> call whereInDemo('100,102');This will produce the following output −
+-------+ | Name | +-------+ | Chris | | David | +-------+ 2 rows in set (0.04 sec) Query OK, 0 rows affected, 1 warning (0.07 sec)
Updated on: 28-Feb-2020
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