- mysql> use test1;
- Reading table information for completion of table and column names
- You can turn off this feature to get a quicker startup with -A
- Database change
- mysql> select * from emp;
- +------------+----------+------+--------+
- | ename | hiredate | sal | deptno |
- +------------+----------+------+--------+
- | aaaaa | NULL | NULL | 1 |
- | cccccccccc | NULL | NULL | 2 |
- | ddddddddd | NULL | NULL | 3 |
- | ffffff | NULL | NULL | 4 |
- | ggg | NULL | NULL | 5 |
- | a1 | NULL | NULL | 5 |
- +------------+----------+------+--------+
- 6 rows in set (0.00 sec)
- mysql> show create table emp \G;
- *************************** 1. row ***************************
- Table: emp
- Create Table: CREATE TABLE `emp` (
- `ename` varchar(10) DEFAULT NULL,
- `hiredate` date DEFAULT NULL,
- `sal` decimal(10,2) DEFAULT NULL,
- `deptno` int(2) DEFAULT NULL
- ) ENGINE=InnoDB DEFAULT CHARSET=utf8
- 1 row in set (0.01 sec)
- ERROR:
- No query specified
- mysql> DELIMITER &&
- mysql> CREATE PROCEDURE num_from_employee (IN input_deptno int, OUT count_num INT )
- -> READS SQL DATA
- -> BEGIN
- -> SELECT COUNT(*) FROM emp WHERE deptno=input_deptno ;
- -> END &&
- Query OK, 0 rows affected (0.01 sec)
- mysql> delimiter ;
- mysql> call num_from_employee(5,@a);
- +----------+
- | COUNT(*) |
- +----------+
- | 2 |
- +----------+
- 1 row in set (0.02 sec)
- Query OK, 0 rows affected (0.02 sec)
- mysql> call num_from_employee(1,@a);
- +----------+
- | COUNT(*) |
- +----------+
- | 1 |
- +----------+
- 1 row in set (0.01 sec)
- Query OK, 0 rows affected (0.01 sec)
- mysql> create table inventory(
- -> film_id int(11),
- -> store_id int(11),
- -> inventory_in_stock varchar(50)
- -> ) ENGINE=InnoDB DEFAULT CHARSET=utf8;
- Query OK, 0 rows affected (0.02 sec)
- mysql> insert into inventory(film_id,store_id,inventory_in_stock) values (1,2,'aaaaaaaa'), (3,4,'bbbb'), (5,6,'cccccccccc'), (7,8,'dddddd'), (9,10,'fff');
- Query OK, 5 rows affected (0.00 sec)
- Records: 5 Duplicates: 0 Warnings: 0
- mysql> select * from inventory;
- +---------+----------+--------------------+
- | film_id | store_id | inventory_in_stock |
- +---------+----------+--------------------+
- | 1 | 2 | aaaaaaaa |
- | 3 | 4 | bbbb |
- | 5 | 6 | cccccccccc |
- | 7 | 8 | dddddd |
- | 9 | 10 | fff |
- +---------+----------+--------------------+
- 5 rows in set (0.00 sec)
- mysql> delimiter $$
- mysql> create procedure film_in_stock(in p_film_id int,in p_store_id int,out p_film_count int)
- -> reads sql data
- -> begin
- -> select film_id
- -> from inventory
- -> where film_id = p_film_id
- -> and store_id = p_store_id;
- -> select found_rows() into p_film_count;
- -> end $$
- Query OK, 0 rows affected (0.01 sec)
- mysql> delimiter ;
- mysql> call film_in_stock(5,6,@a);
- +---------+
- | film_id |
- +---------+
- | 5 |
- +---------+
- 1 row in set (0.01 sec)
- Query OK, 1 row affected (0.01 sec)
- mysql> show create procedure film_in_stock \G;
- *************************** 1. row ***************************
- Procedure: film_in_stock
- sql_mode:
- Create Procedure: CREATE DEFINER=`root`@`localhost` PROCEDURE `film_in_stock`(in p_film_id int,in p_store_id int,out p_film_count int)
- READS SQL DATA
- begin
- select film_id
- from inventory
- where film_id = p_film_id
- and store_id = p_store_id;
- select found_rows() into p_film_count;
- end
- character_set_client: utf8
- collation_connection: utf8_general_ci
- Database Collation: utf8_general_ci
- 1 row in set (0.01 sec)
- ERROR:
- No query specified
- mysql> create table actor(
- -> actor_id int(11) NOT NULL AUTO_INCREMENT ,
- -> first_name varchar(30),
- -> last_name varchar(30),
- -> PRIMARY KEY (actor_id)
- -> ) engine = innodb charset = utf8;
- Query OK, 0 rows affected (0.02 sec)
- mysql> delimiter $$
- mysql> create procedure actor_insert()
- -> begin
- -> set @x = 1;
- -> insert into actor(actor_id,first_name,last_name) values (201,'Test',201);
- -> set @x = 2;
- -> insert into actor(actor_id,first_name,last_name) values(1,'Test','1');
- -> set @x = 3;
- -> end $$
- Query OK, 0 rows affected (0.01 sec)
- mysql> call actor_insert();
- Query OK, 0 rows affected (0.02 sec)
- mysql> call actor_insert();
- ERROR 1062 (23000): Duplicate entry '201' for key 'PRIMARY'
- mysql> select @x;
- +------+
- | @x |
- +------+
- | 1 |
- +------+
- 1 row in set (0.00 sec)
- mysql> delimiter $$
- mysql> create procedure actor_insert_new()
- -> begin
- -> DECLARE CONTINUE HANDLER FOR SQLSTATE '23000' SET @x2 = 1;
- -> set @x = 1;
- -> insert into actor(actor_id,first_name,last_name) values (201,'Test',201);
- -> set @x = 2;
- -> insert into actor(actor_id,first_name,last_name) values(1,'Test','1');
- -> set @x = 3;
- -> end $$
- Query OK, 0 rows affected (0.02 sec)
- mysql> delimiter ;
- mysql> call actor_insert_new();
- Query OK, 0 rows affected, 1 warning (0.01 sec)
- mysql> call actor_insert_new();
- Query OK, 0 rows affected, 1 warning (0.00 sec)
- mysql> select @x,@x2;
- +------+------+
- | @x | @x2 |
- +------+------+
- | 3 | 1 |
- +------+------+
- 1 row in set (0.00 sec)
- mysql> show create table payment \G;
- *************************** 1. row ***************************
- Table: payment
- Create Table: CREATE TABLE `payment` (
- `staff_id` int(11) DEFAULT NULL,
- `amount` int(11) DEFAULT NULL
- ) ENGINE=InnoDB DEFAULT CHARSET=utf8
- 1 row in set (0.01 sec)
- ERROR:
- No query specified
- mysql> select * from payment;
- +----------+--------+
- | staff_id | amount |
- +----------+--------+
- | 1 | 10000 |
- | 2 | 20000 |
- | 3 | 30000 |
- | 4 | 400000 |
- | 5 | 500000 |
- +----------+--------+
- 5 rows in set (0.01 sec)
- mysql> delimiter $$
- mysql> create procedure payment_stat()
- -> begin
- -> DECLARE i_staff_id int;
- -> DECLARE d_amount int;
- -> declare tmp_name varchar(30) default "";
- -> DECLARE cur_payment cursor for select staff_id,amount from payment;
- -> DECLARE EXIT HANDLER FOR NOT FOUND CLOSE cur_payment;
- ->
- -> set @x1 = 0 ;
- -> set @x2 = 0 ;
- ->
- -> open cur_payment;
- -> fetch cur_payment into i_staff_id,d_amount;
- -> while(i_staff_id <=3 )
- -> do
- -> if i_staff_id < 3 then
- -> select i_staff_id,d_amount;
- -> end if;
- -> fetch cur_payment into i_staff_id,d_amount;
- -> end while;
- -> close cur_payment;
- ->
- -> select @x1,@x2;
- -> end;
- -> $$
- Query OK, 0 rows affected (0.01 sec)
- mysql> delimiter ;
- mysql> call payment_stat();
- +------------+----------+
- | i_staff_id | d_amount |
- +------------+----------+
- | 1 | 10000 |
- +------------+----------+
- 1 row in set (0.01 sec)
- +------------+----------+
- | i_staff_id | d_amount |
- +------------+----------+
- | 2 | 20000 |
- +------------+----------+
- 1 row in set (0.01 sec)
- +------+------+
- | @x1 | @x2 |
- +------+------+
- | 0 | 0 |
- +------+------+
- 1 row in set (0.01 sec)
- Query OK, 0 rows affected (0.01 sec)
- mysql> drop procedure payment_stat;
- Query OK, 0 rows affected (0.00 sec)
- mysql> delimiter $$
- mysql> create procedure payment_stat()
- -> begin
- -> DECLARE i_staff_id int;
- -> DECLARE d_amount int;
- -> declare tmp_name varchar(30) default "";
- -> DECLARE cur_payment cursor for select staff_id,amount from payment;
- -> DECLARE EXIT HANDLER FOR NOT FOUND CLOSE cur_payment;
- ->
- -> set @x1 = 0 ;
- -> set @x2 = 0 ;
- ->
- -> open cur_payment;
- -> fetch cur_payment into i_staff_id,d_amount;
- -> while(i_staff_id <=3 )
- -> do
- -> if i_staff_id < 3 then
- -> set @x1 = @x1+ i_staff_id;
- -> else
- -> set @x2 = @x2+ d_amount;
- -> end if;
- -> fetch cur_payment into i_staff_id,d_amount;
- -> end while;
- -> close cur_payment;
- ->
- -> select @x1,@x2;
- -> end;
- -> $$
- Query OK, 0 rows affected (0.01 sec)
- mysql> call payment_stat();
- -> $$
- +------+-------+
- | @x1 | @x2 |
- +------+-------+
- | 3 | 30000 |
- +------+-------+
- 1 row in set (0.01 sec)
- Query OK, 0 rows affected (0.01 sec)
- mysql> delimiter $$
- mysql> create procedure payment_stat()
- -> begin
- -> DECLARE i_staff_id int;
- -> DECLARE d_amount int;
- ->
- -> DECLARE cur_payment cursor for select staff_id,amount from payment;
- -> DECLARE EXIT HANDLER FOR NOT FOUND CLOSE cur_payment;
- ->
- -> set @x1 = 0 ;
- -> set @x2 = 0 ;
- ->
- -> open cur_payment;
- -> fetch cur_payment into i_staff_id,d_amount;
- -> while(i_staff_id <=3 )
- -> do
- -> if i_staff_id < 3 then
- -> set @x1 = @x1+ i_staff_id + 1;
- -> else
- -> set @x2 = @x2+ d_amount ;
- -> end if;
- -> fetch cur_payment into i_staff_id,d_amount;
- -> end while;
- -> close cur_payment;
- ->
- -> select @x1,@x2;
- -> end;
- -> $$
- Query OK, 0 rows affected (0.00 sec)
- mysql> delimiter ;
- mysql> call payment_stat();
- +------+-------+
- | @x1 | @x2 |
- +------+-------+
- | 3 | 30000 |
- +------+-------+
- 1 row in set (0.00 sec)
- Query OK, 0 rows affected (0.00 sec)
- mysql> drop procedure payment_stat;
- Query OK, 0 rows affected (0.00 sec)
- mysql> delimiter $$
- mysql> create procedure payment_stat()
- -> begin
- -> DECLARE i_staff_id int;
- -> DECLARE d_amount int;
- ->
- -> DECLARE cur_payment cursor for select staff_id,amount from payment;
- -> DECLARE EXIT HANDLER FOR NOT FOUND CLOSE cur_payment;
- ->
- -> set @x1 = 0 ;
- -> set @x2 = 0 ;
- ->
- -> open cur_payment;
- -> fetch cur_payment into i_staff_id,d_amount;
- -> while(i_staff_id <=3 )
- -> do
- -> if i_staff_id < 3 then
- -> set @x1 = @x1+ i_staff_id;
- -> else
- -> set @x2 = @x2+ d_amount;
- -> end if;
- -> fetch cur_payment into i_staff_id,d_amount;
- -> end while;
- -> close cur_payment;
- ->
- -> select @x1,@x2;
- -> end;
- -> $$
- Query OK, 0 rows affected (0.00 sec)
- mysql> delimiter ;
- mysql> call payment_stat();
- +------+-------+
- | @x1 | @x2 |
- +------+-------+
- | 3 | 30000 |
- +------+-------+
- 1 row in set (0.00 sec)
- Query OK, 0 rows affected (0.00 sec)
- mysql> delimiter $$
- mysql> create procedure payment_stat()
- -> begin
- -> DECLARE i_staff_id int;
- -> DECLARE d_amount int;
- ->
- -> DECLARE cur_payment cursor for select staff_id,amount from payment;
- -> DECLARE EXIT HANDLER FOR NOT FOUND CLOSE cur_payment;
- ->
- -> set @x1 = 0 ;
- -> set @x2 = 0 ;
- ->
- -> open cur_payment;
- -> fetch cur_payment into i_staff_id,d_amount;
- -> while(i_staff_id <=3 )
- -> do
- -> if i_staff_id < 3 then
- -> set @x1 = @x1+ i_staff_id + 1;
- -> else
- -> set @x2 = @x2+ d_amount;
- -> end if;
- -> fetch cur_payment into i_staff_id,d_amount;
- -> end while;
- -> close cur_payment;
- ->
- -> select @x1,@x2;
- -> end;
- -> $$
- Query OK, 0 rows affected (0.01 sec)
- mysql> delimiter ;
- mysql> call payment_stat();
- +------+-------+
- | @x1 | @x2 |
- +------+-------+
- | 5 | 30000 |
- +------+-------+
- 1 row in set (0.00 sec)
- Query OK, 0 rows affected (0.00 sec)
- mysql> drop procedure payment_stat;
- Query OK, 0 rows affected (0.02 sec)
- mysql> delimiter $$
- mysql> create procedure payment_stat()
- -> begin
- -> DECLARE i_staff_id int;
- -> DECLARE d_amount int;
- ->
- -> DECLARE cur_payment cursor for select staff_id,amount from payment;
- -> DECLARE EXIT HANDLER FOR NOT FOUND CLOSE cur_payment;
- ->
- -> set @x1 = 0 ;
- -> set @x2 = 0 ;
- ->
- -> open cur_payment;
- -> fetch cur_payment into i_staff_id,d_amount;
- -> while(i_staff_id <=3 )
- -> do
- -> if i_staff_id < 3 then
- -> set @x1 = @x1+ i_staff_id + 6;
- -> else
- -> set @x2 = @x2+ d_amount + 5;
- -> end if;
- -> fetch cur_payment into i_staff_id,d_amount;
- -> end while;
- -> close cur_payment;
- ->
- -> select @x1,@x2;
- -> end;
- -> $$
- Query OK, 0 rows affected (0.01 sec)
- mysql> delimiter ;
- mysql> call payment_stat();
- +------+-------+
- | @x1 | @x2 |
- +------+-------+
- | 15 | 30005 |
- +------+-------+
- 1 row in set (0.00 sec)
- Query OK, 0 rows affected (0.00 sec)
- mysql> DELIMITER $$
- mysql>
- mysql> CREATE PROCEDURE addNum()
- -> BEGIN
- -> DECLARE x INT;
- -> SET x = 0;
- -> for_loop : LOOP
- -> SET x = x + 1;
- -> IF x > 30 THEN
- -> LEAVE for_loop;
- -> END IF;
- -> IF mod(x,2) = 0 then
- -> select "num:",x;
- -> ITERATE for_loop;
- -> END IF;
- -> END LOOP;
- -> select "count:",x;
- -> END $$
- Query OK, 0 rows affected (0.01 sec)
- mysql> call addNum();
- -> $$
- +------+------+
- | num: | x |
- +------+------+
- | num: | 2 |
- +------+------+
- 1 row in set (0.00 sec)
- +------+------+
- | num: | x |
- +------+------+
- | num: | 4 |
- +------+------+
- 1 row in set (0.00 sec)
- +------+------+
- | num: | x |
- +------+------+
- | num: | 6 |
- +------+------+
- 1 row in set (0.00 sec)
- +------+------+
- | num: | x |
- +------+------+
- | num: | 8 |
- +------+------+
- 1 row in set (0.00 sec)
- +------+------+
- | num: | x |
- +------+------+
- | num: | 10 |
- +------+------+
- 1 row in set (0.00 sec)
- +------+------+
- | num: | x |
- +------+------+
- | num: | 12 |
- +------+------+
- 1 row in set (0.00 sec)
- +------+------+
- | num: | x |
- +------+------+
- | num: | 14 |
- +------+------+
- 1 row in set (0.00 sec)
- +------+------+
- | num: | x |
- +------+------+
- | num: | 16 |
- +------+------+
- 1 row in set (0.00 sec)
- +------+------+
- | num: | x |
- +------+------+
- | num: | 18 |
- +------+------+
- 1 row in set (0.00 sec)
- +------+------+
- | num: | x |
- +------+------+
- | num: | 20 |
- +------+------+
- 1 row in set (0.00 sec)
- +------+------+
- | num: | x |
- +------+------+
- | num: | 22 |
- +------+------+
- 1 row in set (0.00 sec)
- +------+------+
- | num: | x |
- +------+------+
- | num: | 24 |
- +------+------+
- 1 row in set (0.00 sec)
- +------+------+
- | num: | x |
- +------+------+
- | num: | 26 |
- +------+------+
- 1 row in set (0.00 sec)
- +------+------+
- | num: | x |
- +------+------+
- | num: | 28 |
- +------+------+
- 1 row in set (0.00 sec)
- +------+------+
- | num: | x |
- +------+------+
- | num: | 30 |
- +------+------+
- 1 row in set (0.00 sec)
- +--------+------+
- | count: | x |
- +--------+------+
- | count: | 31 |
- +--------+------+
- 1 row in set (0.00 sec)
- Query OK, 0 rows affected (0.00 sec)
- mysql> delimiter $$
- mysql> create procedure repeatPractise()
- -> begin
- -> set @v = 0 ;
- -> REPEAT
- -> set @v = @v+ 1;
- -> UNTIL @v >=5
- -> END REPEAT;
- -> END
- -> $$
- Query OK, 0 rows affected (0.01 sec)
- mysql> call repeatPractise();
- -> $$
- Query OK, 0 rows affected (0.00 sec)
- mysql> select @v;
- -> $$
- +------+
- | @v |
- +------+
- | 5 |
- +------+
- 1 row in set (0.00 sec)