SQL - データの生成、変換、操作(文字列(substring))

初めてのSQL
Alan Beaulieu (著)

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7章(データの生成、変換、操作)、7.4(練習問題)7-1を解いてみる。

7-1.

SQL文(BBEdit)

SELECT SUBSTRING("Please find the substring in this string", 17, 9);

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 12
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> SELECT SUBSTRING("Please find the substring in this string", 17, 9);
+--------------------------------------------------------------+
| SUBSTRING("Please find the substring in this string", 17, 9) |
+--------------------------------------------------------------+
| substring                                                    |
+--------------------------------------------------------------+
1 row in set (0.00 sec)

mysql> quit
Bye
$