2012年10月26日金曜日

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、ISBN4-8733-181-8) の4章(フィルタリング), 4.5(練習問題)4-2を解いてみる。

4-2.

トランザクションID, 4, 9。

確認。

SQL文(TextWrangler)

select txn_id from tmp
where
account_id in (101, 103) and 
not (txn_type_cd = 'DBT' or amount> 100);

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 9
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> show tables;
+----------------+
| Tables_in_bank |
+----------------+
| account        |
| branch         |
| business       |
| customer       |
| department     |
| employee       |
| individual     |
| officer        |
| product        |
| product_type   |
| tmp            |
| transaction    |
+----------------+
12 rows in set (0.02 sec)

mysql> select txn_id from tmp
    -> where
    -> account_id in (101, 103) and 
    -> not (txn_type_cd = 'DBT' or amount> 100);
+--------+
| txn_id |
+--------+
|      4 |
|      9 |
+--------+
2 rows in set (0.02 sec)

mysql> quit
Bye
$

0 コメント:

コメントを投稿