Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
Store a column's value into a MySQL stored procedure’s variable
To declare a variable, use DECLARE in a MySQL stored procedure. Let us first create a table −
mysql> create table DemoTable2034 -> ( -> StudentId int NOT NULL AUTO_INCREMENT PRIMARY KEY, -> StudentName varchar(20), -> StudentAge int -> ); Query OK, 0 rows affected (0.49 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable2034(StudentName,StudentAge) values('Chris',23);
Query OK, 1 row affected (0.10 sec)
mysql> insert into DemoTable2034(StudentName,StudentAge) values('David',21);
Query OK, 1 row affected (0.15 sec)
mysql> insert into DemoTable2034(StudentName,StudentAge) values('Robert',25);
Query OK, 1 row affected (0.15 sec)
mysql> insert into DemoTable2034(StudentName,StudentAge) values('Mike',19);
Query OK, 1 row affected (0.14 sec)Display all records from the table using select statement −
mysql> select *from DemoTable2034;
This will produce the following output −
+-----------+-------------+------------+ | StudentId | StudentName | StudentAge | +-----------+-------------+------------+ | 1 | Chris | 23 | | 2 | David | 21 | | 3 | Robert | 25 | | 4 | Mike | 19 | +-----------+-------------+------------+ 4 rows in set (0.00 sec)
Here is the query to create a stored procedure and store the above table’s column value in a stored procedure variable −
mysql> delimiter //
mysql> create procedure select_into_variable(id int)
-> begin
-> declare name varchar(50);
-> select StudentName into name from DemoTable2034 where StudentId=id;
-> select concat('Your Name is= ',name);
-> end
-> //
Query OK, 0 rows affected (0.09 sec)
mysql> delimiter ;Call the stored procedure −
mysql> call select_into_variable(4);
This will produce the following output −
+-------------------------------+
| concat('Your Name is= ',name) |
+-------------------------------+
| Your Name is= Mike |
+-------------------------------+
1 row in set (0.04 sec)
Query OK, 0 rows affected (0.06 sec)
Updated on: 07-Apr-2020
797 Views
Advertisements