本文介绍下,一个mysql的例子,将查询到的数据结果保存到一个变量中。有需要的朋友可以参考下。
本代码演示:
将mysql查询结果保存到变量中的方法。
代码:
001 |
mysql> CREATE TABLE Employee( //创建数据表 |
003 |
-> first_name VARCHAR (15), |
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-> last_name VARCHAR (15), |
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-> salary FLOAT (8,2), |
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-> description VARCHAR (15) |
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Query OK, 0 rows affected (0.03 sec) |
013 |
mysql> insert into Employee(id,first_name, last_name, start_date, end_Date, salary, City, Description) |
014 |
-> values (1, 'Jason' , 'Martin' , '19960725' , '20060725' , 1234.56, 'Toronto' , 'Programmer' ); |
015 |
Query OK, 1 row affected (0.00 sec) |
018 |
mysql> insert into Employee(id,first_name, last_name, start_date, end_Date, salary, City, Description) |
019 |
-> values (2, 'Alison' , 'Mathews' , '19760321' , '19860221' , 6661.78, 'Vancouver' , 'Tester' ); |
020 |
Query OK, 1 row affected (0.00 sec) |
023 |
mysql> insert into Employee(id,first_name, last_name, start_date, end_Date, salary, City, Description) |
024 |
-> values (3, 'James' , 'Smith' , '19781212' , '19900315' , 6544.78, 'Vancouver' , 'Tester' ); |
025 |
Query OK, 1 row affected (0.02 sec) |
028 |
mysql> insert into Employee(id,first_name, last_name, start_date, end_Date, salary, City, Description) |
029 |
-> values (4, 'Celia' , 'Rice' , '19821024' , '19990421' , 2344.78, 'Vancouver' , 'Manager' ); |
030 |
Query OK, 1 row affected (0.00 sec) |
033 |
mysql> insert into Employee(id,first_name, last_name, start_date, end_Date, salary, City, Description) |
034 |
-> values (5, 'Robert' , 'Black' , '19840115' , '19980808' , 2334.78, 'Vancouver' , 'Tester' ); |
035 |
Query OK, 1 row affected (0.01 sec) |
038 |
mysql> insert into Employee(id,first_name, last_name, start_date, end_Date, salary, City, Description) |
039 |
-> values (6, 'Linda' , 'Green' , '19870730' , '19960104' , 4322.78, 'New York' , 'Tester' ); |
040 |
Query OK, 1 row affected (0.00 sec) |
043 |
mysql> insert into Employee(id,first_name, last_name, start_date, end_Date, salary, City, Description) |
044 |
-> values (7, 'David' , 'Larry' , '19901231' , '19980212' , 7897.78, 'New York' , 'Manager' ); |
045 |
Query OK, 1 row affected (0.00 sec) |
048 |
mysql> insert into Employee(id,first_name, last_name, start_date, end_Date, salary, City, Description) |
049 |
-> values (8, 'James' , 'Cat' , '19960917' , '20020415' , 1232.78, 'Vancouver' , 'Tester' ); |
050 |
Query OK, 1 row affected (0.00 sec) |
053 |
mysql> select * from Employee; |
054 |
+ ------+------------+-----------+------------+------------+---------+-----------+-------------+ |
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| id | first_name | last_name | start_date | end_date | salary | city | description | |
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+ ------+------------+-----------+------------+------------+---------+-----------+-------------+ |
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| 1 | Jason | Martin | 1996-07-25 | 2006-07-25 | 1234.56 | Toronto | Programmer | |
058 |
| 2 | Alison | Mathews | 1976-03-21 | 1986-02-21 | 6661.78 | Vancouver | Tester | |
059 |
| 3 | James | Smith | 1978-12-12 | 1990-03-15 | 6544.78 | Vancouver | Tester | |
060 |
| 4 | Celia | Rice | 1982-10-24 | 1999-04-21 | 2344.78 | Vancouver | Manager | |
061 |
| 5 | Robert | Black | 1984-01-15 | 1998-08-08 | 2334.78 | Vancouver | Tester | |
062 |
| 6 | Linda | Green | 1987-07-30 | 1996-01-04 | 4322.78 | New York | Tester | |
063 |
| 7 | David | Larry | 1990-12-31 | 1998-02-12 | 7897.78 | New York | Manager | |
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| 8 | James | Cat | 1996-09-17 | 2002-04-15 | 1232.78 | Vancouver | Tester | |
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+ ------+------------+-----------+------------+------------+---------+-----------+-------------+ |
066 |
8 rows in set (0.00 sec) |
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mysql> CREATE PROCEDURE myProc() //创建mysql存储过程 |
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-> DECLARE winner_id INT ; |
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-> DECLARE max_employee_id INT ; |
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-> DECLARE winner_name VARCHAR (70); |
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-> INTO max_employee_id |
081 |
-> SET winner_id=FLOOR(RAND()*max_employee_id)+1; |
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-> SELECT CONCAT_WS( ' ' , 'Employee of the week is' ,first_name,last_name) |
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-> WHERE id=winner_id; |
087 |
Query OK, 0 rows affected (0.00 sec) |
090 |
mysql> call myProc(); //调用mysql存储过程 |
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+ ---------------------------------------------------------------+ |
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| CONCAT_WS( ' ' , 'Employee of the week is' ,first_name,last_name) | |
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+ ---------------------------------------------------------------+ |
094 |
| Employee of the week is James Smith | |
095 |
+ ---------------------------------------------------------------+ |
096 |
1 row in set (0.00 sec) |
098 |
Query OK, 0 rows affected (0.00 sec) |
100 |
mysql> drop procedure myProc; //删除mysql存储过程 |
101 |
Query OK, 0 rows affected (0.00 sec) |
103 |
mysql> drop table Employee; //删除mysql数据表 |
104 |
Query OK, 0 rows affected (0.02 sec) |
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