반응형
invalid-fileMySQL
p.290
primary key
- 단일키
- 복합키
===================================================
mysql> create database bookorama;
Query OK, 1 row affected (0.20 sec)
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| bookorama |
| company |
| mysql |
| sqltest |
| test |
+--------------------+
6 rows in set (0.20 sec)
mysql> use bookorama;
Database changed
===================================================
mysql> create table customers
-> (
-> customerid int unsigned not null auto_increment primary key,
-> name char(50) not null,
-> address char(100) not null,
-> city char(30) not null
-> );
Query OK, 0 rows affected (0.91 sec)
mysql> desc customers;
+------------+------------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+------------+------------------+------+-----+---------+----------------+
| customerid | int(10) unsigned | NO | PRI | NULL | auto_increment |
| name | char(50) | NO | | | |
| address | char(100) | NO | | | |
| city | char(30) | NO | | | |
+------------+------------------+------+-----+---------+----------------+
4 rows in set (0.13 sec)
===================================================
mysql> create table orders
-> (
-> orderid int unsigned not null auto_increment primary key,
-> customerid int unsigned not null,
-> amount float(6,2),
-> date date not null
-> );
Query OK, 0 rows affected (0.22 sec)
mysql> desc orders;
+------------+------------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+------------+------------------+------+-----+---------+----------------+
| orderid | int(10) unsigned | NO | PRI | NULL | auto_increment |
| customerid | int(10) unsigned | NO | | | |
| amount | float(6,2) | YES | | NULL | |
| date | date | NO | | | |
+------------+------------------+------+-----+---------+----------------+
4 rows in set (0.03 sec)
===================================================
mysql> create table books
-> (
-> isbn char(13) not null primary key,
-> author char(50),
-> title char(100),
-> price float(4,2)
-> );
Query OK, 0 rows affected (0.22 sec)
mysql> desc books;
+--------+------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+--------+------------+------+-----+---------+-------+
| isbn | char(13) | NO | PRI | | |
| author | char(50) | YES | | NULL | |
| title | char(100) | YES | | NULL | |
| price | float(4,2) | YES | | NULL | |
+--------+------------+------+-----+---------+-------+
4 rows in set (0.06 sec)
===================================================
mysql> create table order_items
-> (
-> orderid int unsigned not null,
-> isbn char(13) not null,
-> quantity tinyint unsigned,
->
-> primary key (orderid, isbn)
-> );
Query OK, 0 rows affected (0.14 sec)
mysql> desc order_items;
+----------+---------------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+----------+---------------------+------+-----+---------+-------+
| orderid | int(10) unsigned | NO | PRI | | |
| isbn | char(13) | NO | PRI | | |
| quantity | tinyint(3) unsigned | YES | | NULL | |
+----------+---------------------+------+-----+---------+-------+
3 rows in set (0.02 sec)
===================================================
mysql> create table book_reviews
-> (
-> isbn char(13) not null primary key,
-> review text
-> );
Query OK, 0 rows affected (0.11 sec)
mysql> desc book_reviews;
+--------+----------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+--------+----------+------+-----+---------+-------+
| isbn | char(13) | NO | PRI | | |
| review | text | YES | | NULL | |
+--------+----------+------+-----+---------+-------+
2 rows in set (0.05 sec)
===================================================
mysql> show tables;
+---------------------+
| Tables_in_bookorama |
+---------------------+
| book_reviews |
| books |
| customers |
| order_items |
| orders |
+---------------------+
5 rows in set (0.00 sec)
===================================================
mysql> insert into customers values
-> (3, "Julie Smith", "25 Oak Street", "Airport West"),
-> (4, "Alan Wong", "1/47 Haines Avenue", "Box Hill"),
-> (5, "Michelle Arthur", "357 North Road", "Yarraville");
Query OK, 3 rows affected (0.13 sec)
Records: 3 Duplicates: 0 Warnings: 0
mysql> insert into orders values
-> (NULL, 5, 69.98, "2000-04-02"),
-> (NULL, 3, 49.99, "2000-04-15"),
-> (NULL, 4, 74.98, "2000-04-19"),
-> (NULL, 5, 24.99, "2000-05-01");
Query OK, 4 rows affected (0.09 sec)
Records: 4 Duplicates: 0 Warnings: 0
mysql> insert into books values
-> ("0-672-31697-8", "Michael Morgan", "Java 2 for Professional Developers", 34.99),
-> ("0-672-31745-1", "Thomas Down", "Installing Debian GNU/Linux", 24.99),
-> ("0-672-31509-2", "Pruitt, et al.", "Teach Yourself GIMP in 24 Hours", 24.99),
-> ("0-672-31769-9", "Thomas Schenk", "Caldera OpenLinux System Administration Unleashed", 49.99);
Query OK, 4 rows affected (0.11 sec)
Records: 4 Duplicates: 0 Warnings: 0
mysql> insert into order_items values
-> (1, "0-672-31697-8", 2),
-> (2, "0-672-31769-9", 1),
-> (3, "0-672-31769-9", 1),
-> (3, "0-672-31509-2", 1),
-> (4, "0-672-31745-1", 3);
Query OK, 5 rows affected (0.06 sec)
Records: 5 Duplicates: 0 Warnings: 0
mysql> insert into book_reviews values
-> ("0-672-31697-8", "Morgan's book is clearly written and goes well beyond
"> most of the basic Java books out there.");
Query OK, 1 row affected (0.06 sec)
====================================================================
mysql> select * from orders
-> where customerid=5;
+---------+------------+--------+------------+
| orderid | customerid | amount | date |
+---------+------------+--------+------------+
| 1 | 5 | 69.98 | 2000-04-02 |
| 4 | 5 | 24.99 | 2000-05-01 |
+---------+------------+--------+------------+
2 rows in set (0.05 sec)
mysql> select * from orders where customerid in(3,4);
+---------+------------+--------+------------+
| orderid | customerid | amount | date |
+---------+------------+--------+------------+
| 2 | 3 | 49.99 | 2000-04-15 |
| 3 | 4 | 74.98 | 2000-04-19 |
+---------+------------+--------+------------+
2 rows in set (0.03 sec)
mysql> select * from orders where customerid not in(3,4);
+---------+------------+--------+------------+
| orderid | customerid | amount | date |
+---------+------------+--------+------------+
| 1 | 5 | 69.98 | 2000-04-02 |
| 4 | 5 | 24.99 | 2000-05-01 |
+---------+------------+--------+------------+
2 rows in set (0.00 sec)
mysql> select * from orders where customerid=3 or customerid=4;
+---------+------------+--------+------------+
| orderid | customerid | amount | date |
+---------+------------+--------+------------+
| 2 | 3 | 49.99 | 2000-04-15 |
| 3 | 4 | 74.98 | 2000-04-19 |
+---------+------------+--------+------------+
2 rows in set (0.05 sec)
mysql> select * from customers;
+------------+-----------------+--------------------+--------------+
| customerid | name | address | city |
+------------+-----------------+--------------------+--------------+
| 3 | Julie Smith | 25 Oak Street | Airport West |
| 4 | Alan Wong | 1/47 Haines Avenue | Box Hill |
| 5 | Michelle Arthur | 357 North Road | Yarraville |
+------------+-----------------+--------------------+--------------+
3 rows in set (0.00 sec)
mysql> select * from orders;
+---------+------------+--------+------------+
| orderid | customerid | amount | date |
+---------+------------+--------+------------+
| 1 | 5 | 69.98 | 2000-04-02 |
| 2 | 3 | 49.99 | 2000-04-15 |
| 3 | 4 | 74.98 | 2000-04-19 |
| 4 | 5 | 24.99 | 2000-05-01 |
+---------+------------+--------+------------+
4 rows in set (0.00 sec)
mysql>
mysql> select o.orderid, o.amount, o.date
-> from customers c, orders o
-> where c.name= 'Julie Smith'
-> and c.customerid = o.customerid;
+---------+--------+------------+
| orderid | amount | date |
+---------+--------+------------+
| 2 | 49.99 | 2000-04-15 |
+---------+--------+------------+
1 row in set (0.11 sec)
Question!
도시가 Box Hill인 데이터의 이름과 가격을 구하시오.
select c.name, o.amount
from customers c, orders o
where c.city='Box Hill' and c.customerid=o.customerid;
mysql> select c.name, o.amount
-> from customers c, orders o
-> where c.city='Box Hill' and c.customerid=o.customerid;
+-----------+--------+
| name | amount |
+-----------+--------+
| Alan Wong | 74.98 |
+-----------+--------+
1 row in set (0.00 sec)
mysql> select c.name
-> from customers c, orders o, order_items oi, books b
-> where c.customerid = o.customerid
-> and o.orderid = oi.orderid
-> and oi.isbn = b.isbn
-> and b.title like '%Java%';
+-----------------+
| name |
+-----------------+
| Michelle Arthur |
+-----------------+
1 row in set (0.16 sec)
===================================================
Linux 문구가 들어간 책의 사람 이름과 도시명을 검색하시오.
mysql> select * from book_reviews;
+---------------+----------------------------------------------------------------------------------------
| isbn | review
+---------------+----------------------------------------------------------------------------------------
| 0-672-31697-8 | Morgan's book is clearly written and goes well beyond
most of the basic Java books out there. |
+---------------+----------------------------------------------------------------------------------------
1 row in set (0.02 sec)
mysql> select * from books;
+---------------+----------------+---------------------------------------------------+-------+
| isbn | author | title | price |
+---------------+----------------+---------------------------------------------------+-------+
| 0-672-31509-2 | Pruitt, et al. | Teach Yourself GIMP in 24 Hours | 24.99 |
| 0-672-31697-8 | Michael Morgan | Java 2 for Professional Developers | 34.99 |
| 0-672-31745-1 | Thomas Down | Installing Debian GNU/Linux | 24.99 |
| 0-672-31769-9 | Thomas Schenk | Caldera OpenLinux System Administration Unleashed | 49.99 |
+---------------+----------------+---------------------------------------------------+-------+
4 rows in set (0.00 sec)
mysql> select * from order_items;
+---------+---------------+----------+
| orderid | isbn | quantity |
+---------+---------------+----------+
| 1 | 0-672-31697-8 | 2 |
| 2 | 0-672-31769-9 | 1 |
| 3 | 0-672-31509-2 | 1 |
| 3 | 0-672-31769-9 | 1 |
| 4 | 0-672-31745-1 | 3 |
+---------+---------------+----------+
5 rows in set (0.00 sec)
mysql> select * from orders;
+---------+------------+--------+------------+
| orderid | customerid | amount | date |
+---------+------------+--------+------------+
| 1 | 5 | 69.98 | 2000-04-02 |
| 2 | 3 | 49.99 | 2000-04-15 |
| 3 | 4 | 74.98 | 2000-04-19 |
| 4 | 5 | 24.99 | 2000-05-01 |
+---------+------------+--------+------------+
4 rows in set (0.00 sec)
mysql> select * from customers;
+------------+-----------------+--------------------+--------------+
| customerid | name | address | city |
+------------+-----------------+--------------------+--------------+
| 3 | Julie Smith | 25 Oak Street | Airport West |
| 4 | Alan Wong | 1/47 Haines Avenue | Box Hill |
| 5 | Michelle Arthur | 357 North Road | Yarraville |
+------------+-----------------+--------------------+--------------+
3 rows in set (0.00 sec)
select c.name, c.city
from books b, order_items oi, orders o, customers c
where b.title like '%Linux%'
and b.isbn=oi.isbn
and oi.orderid=o.orderid
and o.customerid=c.customerid;
==============================================================================
Question
- Linux 문구가 들어간 책의 이름과 도시명을 검색하시오.
mysql> select b.title, c.city
-> from books b, order_items oi, orders o, customers c
-> where b.title like '%Linux%'
-> and b.isbn=oi.isbn
-> and oi.orderid=o.orderid
-> and o.customerid=c.customerid;
+---------------------------------------------------+--------------+
| title | city |
+---------------------------------------------------+--------------+
| Caldera OpenLinux System Administration Unleashed | Airport West |
| Caldera OpenLinux System Administration Unleashed | Box Hill |
| Installing Debian GNU/Linux | Yarraville |
+---------------------------------------------------+--------------+
3 rows in set (0.00 sec)
==============================================================================
Question
- Linux 문구가 들어간 책의 고객 이름과 도시명을 검색하시오.
mysql> select c.name, c.city
-> from books b, order_items oi, orders o, customers c
-> where b.title like '%Linux%'
-> and b.isbn=oi.isbn
-> and oi.orderid=o.orderid
-> and o.customerid=c.customerid;
+-----------------+--------------+
| name | city |
+-----------------+--------------+
| Julie Smith | Airport West |
| Alan Wong | Box Hill |
| Michelle Arthur | Yarraville |
+-----------------+--------------+
3 rows in set (0.00 sec)
반응형