開発環境
- OS: OS X Lion - Apple
- データベース言語: SQL
- リレーショナルデータベース: MySQL
『初めてのSQL』(Alan Beaulieu 著、株式会社クイープ 翻訳、オライリー・ジャパン、2006年、ISBN4-87311-281-8) の3章(クエリ入門), 3.8(練習問題)3-4を解いてみる。
3-4.
入出力結果(Terminal)
$ mysql -u lrngsql -p bank
Enter password:
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 86
Server version: 5.5.24 MySQL Community Server (GPL)
Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> desc account;
+--------------------+----------------------------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+--------------------+----------------------------------+------+-----+---------+----------------+
| account_id | int(10) unsigned | NO | PRI | NULL | auto_increment |
| product_cd | varchar(10) | NO | MUL | NULL | |
| cust_id | int(10) unsigned | NO | MUL | NULL | |
| open_date | date | NO | | NULL | |
| close_date | date | YES | | NULL | |
| last_activity_date | date | YES | | NULL | |
| status | enum('ACTIVE','CLOSED','FROZEN') | YES | | NULL | |
| open_branch_id | smallint(5) unsigned | YES | MUL | NULL | |
| open_emp_id | smallint(5) unsigned | YES | MUL | NULL | |
| avail_balance | float(10,2) | YES | | NULL | |
| pending_balance | float(10,2) | YES | | NULL | |
+--------------------+----------------------------------+------+-----+---------+----------------+
11 rows in set (0.20 sec)
mysql> desc product;
+-----------------+-------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+-----------------+-------------+------+-----+---------+-------+
| product_cd | varchar(10) | NO | PRI | NULL | |
| name | varchar(50) | NO | | NULL | |
| product_type_cd | varchar(10) | NO | MUL | NULL | |
| date_offered | date | YES | | NULL | |
| date_retired | date | YES | | NULL | |
+-----------------+-------------+------+-----+---------+-------+
5 rows in set (0.01 sec)
mysql> select name from product;
+-------------------------+
| name |
+-------------------------+
| auto loan |
| business line of credit |
| certificate of deposit |
| checking account |
| money market account |
| home mortgage |
| savings account |
| small business loan |
+-------------------------+
8 rows in set (0.01 sec)
mysql> select product_type_cd from product;
+-----------------+
| product_type_cd |
+-----------------+
| ACCOUNT |
| ACCOUNT |
| ACCOUNT |
| ACCOUNT |
| LOAN |
| LOAN |
| LOAN |
| LOAN |
+-----------------+
8 rows in set (0.00 sec)
mysql> select p.product_cd,a.cust_id,a.avail_balance
-> from product p inner join account a
-> on p.product_cd = a.product_cd
-> where p.product_type_cd = 'ACCOUNT';
+------------+---------+---------------+
| product_cd | cust_id | avail_balance |
+------------+---------+---------------+
| CD | 1 | 3000.00 |
| CD | 6 | 10000.00 |
| CD | 7 | 5000.00 |
| CD | 9 | 1500.00 |
| CHK | 1 | 1057.75 |
| CHK | 2 | 2258.02 |
| CHK | 3 | 1057.75 |
| CHK | 4 | 534.12 |
| CHK | 5 | 2237.97 |
| CHK | 6 | 122.37 |
| CHK | 8 | 3487.19 |
| CHK | 9 | 125.67 |
| CHK | 10 | 23575.12 |
| CHK | 12 | 38552.05 |
| MM | 3 | 2212.50 |
| MM | 4 | 5487.09 |
| MM | 9 | 9345.55 |
| SAV | 1 | 500.00 |
| SAV | 2 | 200.00 |
| SAV | 4 | 767.77 |
| SAV | 8 | 387.99 |
+------------+---------+---------------+
21 rows in set (0.15 sec)
mysql> quit;
Bye
$
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