SQL - フィルタリング(IN, AND, NOT, OR)

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)4-2.を解いてみる。

4-2.

返されるトランザクションIDは、4、9。

トランザクションのテーブルを作成、確認。

入出力結果(Terminal)

$ mysql -u lrngsql -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 13
Server version: 5.5.18 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 databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| bank               |
| mysql              |
| performance_schema |
| sample_store       |
| store              |
| test               |
+--------------------+
7 rows in set (0.05 sec)

mysql> use bank;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
mysql> show tables;
+----------------+
| Tables_in_bank |
+----------------+
| account        |
| branch         |
| business       |
| customer       |
| department     |
| employee       |
| favorite_food  |
| individual     |
| officer        |
| person         |
| product        |
| product_type   |
| tmp            |
| transaction    |
+----------------+
14 rows in set (0.00 sec)

mysql> desc tmp;
+-------------+----------------------+------+-----+---------+----------------+
| Field       | Type                 | Null | Key | Default | Extra          |
+-------------+----------------------+------+-----+---------+----------------+
| txn_id      | smallint(5) unsigned | NO   | PRI | NULL    | auto_increment |
| txn_date    | date                 | YES  |     | NULL    |                |
| account_id  | int(11)              | YES  |     | NULL    |                |
| txn_type_cd | enum('CDT','DBT')    | YES  |     | NULL    |                |
| amount      | double               | YES  |     | NULL    |                |
+-------------+----------------------+------+-----+---------+----------------+
5 rows in set (0.05 sec)

mysql> select * from tmp
    -> ;
+--------+------------+------------+-------------+--------+
| txn_id | txn_date   | account_id | txn_type_cd | amount |
+--------+------------+------------+-------------+--------+
|      1 | 2005-02-22 |        101 | CDT         |   1000 |
|      2 | 2005-02-23 |        102 | CDT         | 525.75 |
|      3 | 2005-02-24 |        101 | DBT         |    100 |
|      4 | 2005-02-24 |        103 | CDT         |     55 |
|      5 | 2005-02-25 |        101 | DBT         |     50 |
|      6 | 2005-02-25 |        103 | DBT         |     25 |
|      7 | 2005-02-25 |        102 | CDT         | 125.37 |
|      8 | 2005-02-26 |        103 | DBT         |     10 |
|      9 | 2005-02-27 |        101 | CDT         |     75 |
+--------+------------+------------+-------------+--------+
9 rows in set (0.01 sec)

mysql> select account_id
    -> from tmp
    -> where account_id in (101,103)
    -> and not (txn_type_cd = 'DBT' or amount > 100);
+------------+
| account_id |
+------------+
|        103 |
|        101 |
+------------+
2 rows in set (0.00 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 (0.00 sec)

mysql> quit;
Bye
$