mysql> mysql> mysql> CREATE TABLE Employee( -> id int, -> first_name VARCHAR(15), -> last_name VARCHAR(15), -> start_date DATE, -> end_date DATE, -> salary FLOAT(8,2), -> city VARCHAR(10), -> description VARCHAR(15) -> ); Query OK, 0 rows affected (0.05 sec)
mysql> mysql> mysql> insert into Employee(id,first_name, last_name, start_date, end_Date, salary, City, Description) -> values (1,'Jason', 'Martin', '19960725', '20060725', 1234.56, 'Toronto', 'Programmer'); Query OK, 1 row affected (0.01 sec)
mysql> mysql> insert into Employee(id,first_name, last_name, start_date, end_Date, salary, City, Description) -> values(2,'Alison', 'Mathews', '19760321', '19860221', 6661.78, 'Vancouver','Tester'); Query OK, 1 row affected (0.00 sec)
mysql> mysql> insert into Employee(id,first_name, last_name, start_date, end_Date, salary, City, Description) -> values(3,'James', 'Smith', '19781212', '19900315', 6544.78, 'Vancouver','Tester'); Query OK, 1 row affected (0.00 sec)
mysql> mysql> insert into Employee(id,first_name, last_name, start_date, end_Date, salary, City, Description) -> values(4,'Celia', 'Rice', '19821024', '19990421', 2344.78, 'Vancouver','Manager'); Query OK, 1 row affected (0.00 sec)
mysql> mysql> insert into Employee(id,first_name, last_name, start_date, end_Date, salary, City, Description) -> values(5,'Robert', 'Black', '19840115', '19980808', 2334.78, 'Vancouver','Tester'); Query OK, 1 row affected (0.00 sec)
mysql> mysql> insert into Employee(id,first_name, last_name, start_date, end_Date, salary, City, Description) -> values(6,'Linda', 'Green', '19870730', '19960104', 4322.78,'New York', 'Tester'); Query OK, 1 row affected (0.00 sec)
mysql> mysql> insert into Employee(id,first_name, last_name, start_date, end_Date, salary, City, Description) -> values(7,'David', 'Larry', '19901231', '19980212', 7897.78,'New York', 'Manager'); Query OK, 1 row affected (0.01 sec)
mysql> mysql> insert into Employee(id,first_name, last_name, start_date, end_Date, salary, City, Description) -> values(8,'James', 'Cat', '19960917', '20020415', 1232.78,'Vancouver', 'Tester'); Query OK, 1 row affected (0.00 sec)
mysql> mysql> select * from Employee; +------+------------+-----------+------------+------------+---------+-----------+-------------+ | id | first_name | last_name | start_date | end_date | salary | city | description | +------+------------+-----------+------------+------------+---------+-----------+-------------+ | 1 | Jason | Martin | 1996-07-25 | 2006-07-25 | 1234.56 | Toronto | Programmer | | 2 | Alison | Mathews | 1976-03-21 | 1986-02-21 | 6661.78 | Vancouver | Tester | | 3 | James | Smith | 1978-12-12 | 1990-03-15 | 6544.78 | Vancouver | Tester | | 4 | Celia | Rice | 1982-10-24 | 1999-04-21 | 2344.78 | Vancouver | Manager | | 5 | Robert | Black | 1984-01-15 | 1998-08-08 | 2334.78 | Vancouver | Tester | | 6 | Linda | Green | 1987-07-30 | 1996-01-04 | 4322.78 | New York | Tester | | 7 | David | Larry | 1990-12-31 | 1998-02-12 | 7897.78 | New York | Manager | | 8 | James | Cat | 1996-09-17 | 2002-04-15 | 1232.78 | Vancouver | Tester | +------+------------+-----------+------------+------------+---------+-----------+-------------+ 8 rows in set (0.00 sec)
mysql> mysql> mysql> mysql> delimiter $$ mysql> mysql> CREATE PROCEDURE myProc(in_first_name VARCHAR(30), -> in_last_name VARCHAR(30), -> in_city VARCHAR(30), -> in_description VARCHAR(30), -> in_id INT) -> BEGIN -> DECLARE employee_exists INT DEFAULT 0; -> DECLARE duplicate_emp INT DEFAULT 0; -> -> START TRANSACTION; -> -> -- Does the location exist? -> SELECT COUNT(*) -> INTO employee_exists -> FROM employee -> WHERE id=in_id; -> -> IF employee_exists=0 THEN -> select CONCAT('Creating new employee',in_id); -> -> INSERT INTO employee (id,first_name,last_name,city) -> VALUES (in_id,in_first_name,in_last_name,in_city); -> ELSE -> UPDATE employee set first_name=in_first_name, city=in_city WHERE id=in_id; -> END IF; -> -> SAVEPOINT savepoint_location_exists; -> -> BEGIN -> DECLARE DUPLICATE_KEY CONDITION FOR 1062; -> DECLARE CONTINUE HANDLER FOR DUPLICATE_KEY /*Duplicate key value*/ -> BEGIN -> SET duplicate_emp=1; -> ROLLBACK TO SAVEPOINT savepoint_location_exists; -> END; -> -> select (CONCAT('Creating new employee',in_id)); -> -> INSERT INTO employee (first_name,last_name,id) -> VALUES (in_first_name,in_last_name, in_id); -> -> IF duplicate_emp=1 THEN -> UPDATE employee -> SET first_name=in_first_name; -> END IF; -> END; -> COMMIT; -> END$$ Query OK, 0 rows affected (0.02 sec)
mysql> mysql> delimiter ; mysql> call myProc('New First','New Second','New City','New Desc',123); +---------------------------------------+ | CONCAT('Creating new employee',in_id) | +---------------------------------------+ | Creating new employee123 | +---------------------------------------+ 1 row in set (0.00 sec)
+-----------------------------------------+ | (CONCAT('Creating new employee',in_id)) | +-----------------------------------------+ | Creating new employee123 | +-----------------------------------------+ 1 row in set (0.01 sec)
Query OK, 0 rows affected (0.01 sec)
mysql> mysql> call myProc('New First','New Second','New City','New Desc',1); +-----------------------------------------+ | (CONCAT('Creating new employee',in_id)) | +-----------------------------------------+ | Creating new employee1 | +-----------------------------------------+ 1 row in set (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
mysql> mysql> drop procedure myProc; Query OK, 0 rows affected (0.00 sec)
mysql> mysql> mysql> mysql> mysql> mysql> drop table Employee; Query OK, 0 rows affected (0.00 sec)
mysql>
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