2012年8月7日火曜日

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4章(フィルタリング), 4.5(練習問題)4-3を解いてみる。

4-3.

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 1
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 (0.06 sec)

mysql> select account_id
    -> from account
    -> where open_date between '2002-01-01' and '2002-12-31';
+------------+
| account_id |
+------------+
|          7 |
|          8 |
|         14 |
|         24 |
|         25 |
+------------+
5 rows in set (0.29 sec)

mysql> select account_id,open_date
    -> from account
    -> where open_date between '2002-01-01' and '2002-12-31';
+------------+------------+
| account_id | open_date  |
+------------+------------+
|          7 | 2002-11-23 |
|          8 | 2002-12-15 |
|         14 | 2002-08-24 |
|         24 | 2002-09-30 |
|         25 | 2002-10-01 |
+------------+------------+
5 rows in set (0.00 sec)

mysql> quit;
Bye
$

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