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mysql学习记录（十）--存储过程_MySQL

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May 30, 2016 pm 05:10 PM
過程

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)

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如何修復KB5055523無法在Windows 11中安裝？
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MinGW - Minimalist GNU for Windows

MinGW - Minimalist GNU for Windows

這個專案正在遷移到osdn.net/projects/mingw的過程中，你可以繼續在那裡關注我們。 MinGW：GNU編譯器集合（GCC）的本機Windows移植版本，可自由分發的導入函式庫和用於建置本機Windows應用程式的頭檔；包括對MSVC執行時間的擴展，以支援C99功能。 MinGW的所有軟體都可以在64位元Windows平台上運作。

Atom編輯器mac版下載

Atom編輯器mac版下載

最受歡迎的的開源編輯器

VSCode Windows 64位元 下載

VSCode Windows 64位元 下載

微軟推出的免費、功能強大的一款IDE編輯器

SublimeText3 Linux新版

SublimeText3 Linux新版

SublimeText3 Linux最新版

DVWA

DVWA

Damn Vulnerable Web App (DVWA) 是一個PHP/MySQL的Web應用程序，非常容易受到攻擊。它的主要目標是成為安全專業人員在合法環境中測試自己的技能和工具的輔助工具，幫助Web開發人員更好地理解保護網路應用程式的過程，並幫助教師/學生在課堂環境中教授/學習Web應用程式安全性。 DVWA的目標是透過簡單直接的介面練習一些最常見的Web漏洞，難度各不相同。請注意，該軟體中

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