2. Disclaimer: This presentation is prepared by trainees of
baabtra as a part of mentoring program. This is not official
document of baabtra –Mentoring Partner
Baabtra-Mentoring Partner is the mentoring division of baabte System Technologies Pvt .
Ltd

3. Week Target Achieved
1 30 25
2
3
Typing Speed

4. Jobs Applied
Week Company Designation Applied Date Current Status
1
2
3

5. WELCOME

6. Stored procedures and cursor
Midhun sudhakar
midhusudhakaran@gmail.com
Midhun.sudhakar.73@facebook.com
twitter.com/midhunopus
in.linkedin.com/pub/midhunsudhakar/86/a65/a9b/Phonenumber
9995586182

7. Content
• What is stored procedure.
• Advantages of stored procedure.
• What is Cursor.
• Sample stored procedure program.

8. What is stored procedure?
• Is a block of SQL statements.
• It can contain,
– variable definition.
– Conditional statements.
– Loops etc..

9. advantages
• Speed(pre-compiled execution).
• Reduce client/server traffic.
• Efficient re-use of code.

10. Syntax..
CREATE PROCEDURE procedure_name(parameter)
BEGIN
//definition;
END

11. Example..
CREATE PROCEDURE findcustomer(IN customer_id int)
BEGIN
select * from customer where id=customer_id;
END
CALL findcustomer(2);

12. What is Cursor?
• cursor in stored procedures to iterate.
• through a result set returned by a SELECT
statement.

13. Syntax..
DECLARE cursor_name CURSOR FOR SELECT_statement;
OPEN cursor_name;
FETCH cursor_name INTO variables list;
CLOSE cursor_name;

14. Example..
DELIMITER $$
CREATE PROCEDURE build_email_list (INOUT email_list varchar(4000))
BEGIN
DECLARE v_finished INTEGER DEFAULT 0;
DECLARE v_email varchar(100) DEFAULT "";
-- declare cursor for employee email
DEClARE email_cursor CURSOR FOR SELECT email FROM employees;
-- declare NOT FOUND handler
DECLARE CONTINUE HANDLER FOR NOT FOUND SET v_finished = 1;

15. Ctnd..
OPEN email_cursor;
get_email: LOOP
FETCH email_cursor INTO v_email;
IF v_finished = 1 THEN
LEAVE get_email;
END IF;
-- build email list
SET email_list = CONCAT(v_email,“,",email_list);
END LOOP get_email;
CLOSE email_cursor;
END$$
SET @email_list = "";
CALL build_email_list(@email_list);
SELECT @email_list;

16. Write a single stored procedure to insert values
into both table?
DELIMITER $$
CREATE PROCEDURE double_insert( usr CHAR(12), pass CHAR(12))
BEGIN
START TRANSACTION;
INSERT INTO tbl_user VALUES (usr,NULL);
INSERT INTO tbl_login VALUES (NULL,usr, pass);
COMMIT;
END$$
DELIMITER ;
SET @username = 'baabtra';
SET @password = '321';
CALL double_insert(@username,@password);
SELECT * FROM tbl_user;
SELECT * FROM tbl_login;

17. THANK TOU

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