SQL練習問題
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204
DATABASE_Q1_hirayama;.txt
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204
DATABASE_Q1_hirayama;.txt
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mysql> CREATE DATABASE Q1;
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Query OK, 1 row affected (0.01 sec)
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mysql> SHOW DATABASEs;
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+--------------------+
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| Database |
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+--------------------+
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| information_schema |
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| mysql |
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| performance_schema |
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| q1 |
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| rezodb |
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| sys |
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+--------------------+
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6 rows in set (0.00 sec)
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mysql> CREATE USER 'rezouser'@'localhost' IDENTIFIED BY 'Rezo_0000';
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ERROR 1396 (HY000): Operation CREATE USER failed for 'rezouser'@'localhost'
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mysql> USE Q1;
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Database changed
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mysql> SHOW DATABASEs;
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+--------------------+
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| Database |
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+--------------------+
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| information_schema |
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| mysql |
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| performance_schema |
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| q1 |
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| rezodb |
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| sys |
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+--------------------+
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6 rows in set (0.01 sec)
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mysql> CREATE TABLE book_table(book_id INT, book_name VARCHAR(50), author_name VARCHAR(50), price INT, sales_flag INT);
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Query OK, 0 rows affected (0.03 sec)
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mysql> SELECT * FROM q1;
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ERROR 1146 (42S02): Table 'q1.q1' doesn't exist
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mysql> SHOW tables;
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+--------------+
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| Tables_in_q1 |
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+--------------+
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| book_table |
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+--------------+
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1 row in set (0.00 sec)
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mysql> users;
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ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'users' at line 1
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mysql> DESCRIBE users;
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ERROR 1146 (42S02): Table 'q1.users' doesn't exist
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mysql> DESCRIBE book_table;
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+-------------+-------------+------+-----+---------+-------+
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| Field | Type | Null | Key | Default | Extra |
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+-------------+-------------+------+-----+---------+-------+
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| book_id | int | YES | | NULL | |
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| book_name | varchar(50) | YES | | NULL | |
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| author_name | varchar(50) | YES | | NULL | |
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| price | int | YES | | NULL | |
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| sales_flag | int | YES | | NULL | |
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+-------------+-------------+------+-----+---------+-------+
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5 rows in set (0.01 sec)
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mysql> SELECT * FROM book_table;
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Empty set (0.00 sec)
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mysql> INSERT INTO book_table VALUES (10001, 'TwoPeace', '三田英一郎', 420, 1);
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ERROR 1054 (42S22): Unknown column ' 420' in 'field list'
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mysql> INSERT INTO book_table VALUES (10001, 'TwoPeace', '三田英一郎', 420, 1);
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Query OK, 1 row affected (0.00 sec)
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mysql> SHOW tables;
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+--------------+
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| Tables_in_q1 |
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+--------------+
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| book_table |
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+--------------+
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1 row in set (0.00 sec)
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mysql> SHOW book_table;
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ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'book_table' at line 1
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mysql> SELECT * FROM book_table;
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+---------+-----------+-------------+-------+------------+
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| book_id | book_name | author_name | price | sales_flag |
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+---------+-----------+-------------+-------+------------+
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| 10001 | TwoPeace | 三田英一郎 | 420 | 1 |
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+---------+-----------+-------------+-------+------------+
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1 row in set (0.00 sec)
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mysql> INSERT INTO book_table VALUES (10002, '名探偵金田二', '青山ふみや', 460, 1);
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Query OK, 1 row affected (0.00 sec)
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mysql> INSERT INTO book_table VALUES (20001, '坊ちゃま', '冬目漱岩', 460, 1);
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Query OK, 1 row affected (0.01 sec)
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mysql> INSERT INTO book_table VALUES (30001, '西方見聞録', '不明', 1000, 1);
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Query OK, 1 row affected (0.01 sec)
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mysql> INSERT INTO book_table VALUES (40010, '吾輩は犬である', '冬目漱岩', 420, 1);
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Query OK, 1 row affected (0.00 sec)
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mysql> SELECT * FROM book_table;
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+---------+----------------+-------------+-------+------------+
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| book_id | book_name | author_name | price | sales_flag |
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+---------+----------------+-------------+-------+------------+
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| 10001 | TwoPeace | 三田英一郎 | 420 | 1 |
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| 10002 | 名探偵金田二 | 青山ふみや | 460 | 1 |
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| 20001 | 坊ちゃま | 冬目漱岩 | 460 | 1 |
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| 30001 | 西方見聞録 | 不明 | 1000 | 1 |
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| 40010 | 吾輩は犬である | 冬目漱岩 | 420 | 1 |
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+---------+----------------+-------------+-------+------------+
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5 rows in set (0.00 sec)
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mysql> SELECT * FLOM book_table WHERE book_name and author_name;
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ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'FLOM book_table WHERE book_name and author_name' at line 1
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mysql> SELECT * FLOM book_table WHERE book_name AND author_name;
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ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'FLOM book_table WHERE book_name AND author_name' at line 1
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mysql> SELECT * FLOM book_table WHERE book_name AND author_name;
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ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'FLOM book_table WHERE book_name AND author_name' at line 1
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mysql> SELECT book_id,author_name;
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ERROR 1054 (42S22): Unknown column 'book_id' in 'field list'
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mysql> SELECT * FLOM 'book_table' WHERE CONCAT(book_name, author_name);
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ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'FLOM 'book_table' WHERE CONCAT(book_name, author_name)' at line 1
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mysql> SELECT book_name, author_name FROM book_table;
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+----------------+-------------+
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| book_name | author_name |
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+----------------+-------------+
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| TwoPeace | 三田英一郎 |
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| 名探偵金田二 | 青山ふみや |
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| 坊ちゃま | 冬目漱岩 |
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| 西方見聞録 | 不明 |
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| 吾輩は犬である | 冬目漱岩 |
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+----------------+-------------+
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5 rows in set (0.00 sec)
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mysql> UPDATE book_table set book_id = 30001 set author_name = 'マール＝コー＝ポロ' set sales_flag = 0 WHERE book_name = '西方見聞録';
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ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'set author_name = 'マール＝コー＝ポロ' set sales_flag = 0 WHERE book_na' at line 1
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mysql> UPDATE book_table set book_id = 30001, author_name = 'マール＝コー＝ポロ', sales_flag = 0 WHERE book_name = '西方見聞録';
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Query OK, 1 row affected (0.01 sec)
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Rows matched: 1 Changed: 1 Warnings: 0
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mysql> SELECT * FROM book_table;
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+---------+----------------+--------------------+-------+------------+
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| book_id | book_name | author_name | price | sales_flag |
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+---------+----------------+--------------------+-------+------------+
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| 10001 | TwoPeace | 三田英一郎 | 420 | 1 |
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| 10002 | 名探偵金田二 | 青山ふみや | 460 | 1 |
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| 20001 | 坊ちゃま | 冬目漱岩 | 460 | 1 |
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| 30001 | 西方見聞録 | マール＝コー＝ポロ | 1000 | 0 |
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| 40010 | 吾輩は犬である | 冬目漱岩 | 420 | 1 |
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+---------+----------------+--------------------+-------+------------+
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5 rows in set (0.00 sec)
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mysql> SELECT * FROM book_table WHERE sales_flag = 1;
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+---------+----------------+-------------+-------+------------+
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| book_id | book_name | author_name | price | sales_flag |
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+---------+----------------+-------------+-------+------------+
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| 10001 | TwoPeace | 三田英一郎 | 420 | 1 |
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| 10002 | 名探偵金田二 | 青山ふみや | 460 | 1 |
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| 20001 | 坊ちゃま | 冬目漱岩 | 460 | 1 |
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| 40010 | 吾輩は犬である | 冬目漱岩 | 420 | 1 |
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+---------+----------------+-------------+-------+------------+
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4 rows in set (0.00 sec)
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mysql> SELECT * FROM book_table WHERE book_name = '冬目漱岩' AND price = 420;
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Empty set (0.00 sec)
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mysql> SELECT * FROM book_table;
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+---------+----------------+--------------------+-------+------------+
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| book_id | book_name | author_name | price | sales_flag |
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+---------+----------------+--------------------+-------+------------+
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| 10001 | TwoPeace | 三田英一郎 | 420 | 1 |
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| 10002 | 名探偵金田二 | 青山ふみや | 460 | 1 |
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| 20001 | 坊ちゃま | 冬目漱岩 | 460 | 1 |
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| 30001 | 西方見聞録 | マール＝コー＝ポロ | 1000 | 0 |
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| 40010 | 吾輩は犬である | 冬目漱岩 | 420 | 1 |
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+---------+----------------+--------------------+-------+------------+
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5 rows in set (0.00 sec)
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mysql> SELECT * FROM book_table WHERE book_name = '冬目漱岩' AND price = 420;
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Empty set (0.00 sec)
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mysql> SELECT book_table WHERE book_name = '冬目漱岩' AND price = 420;
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ERROR 1054 (42S22): Unknown column 'book_table' in 'field list'
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mysql> SELECT * FROM book_table WHERE author_name = '冬目漱岩' AND price = 420;
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+---------+----------------+-------------+-------+------------+
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| book_id | book_name | author_name | price | sales_flag |
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+---------+----------------+-------------+-------+------------+
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| 40010 | 吾輩は犬である | 冬目漱岩 | 420 | 1 |
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+---------+----------------+-------------+-------+------------+
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1 row in set (0.00 sec)
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mysql> DELETE FROM book_table WHERE book_id = 20001;
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Query OK, 1 row affected (0.01 sec)
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mysql> SELECT * FROM book_table;
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+---------+----------------+--------------------+-------+------------+
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| book_id | book_name | author_name | price | sales_flag |
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+---------+----------------+--------------------+-------+------------+
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| 10001 | TwoPeace | 三田英一郎 | 420 | 1 |
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| 10002 | 名探偵金田二 | 青山ふみや | 460 | 1 |
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| 30001 | 西方見聞録 | マール＝コー＝ポロ | 1000 | 0 |
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| 40010 | 吾輩は犬である | 冬目漱岩 | 420 | 1 |
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+---------+----------------+--------------------+-------+------------+
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4 rows in set (0.00 sec)
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