Compare commits
2 Commits
| Author | SHA1 | Date | |
|---|---|---|---|
| 5a256dcea2 | |||
| d00e04b593 |
@@ -1,169 +0,0 @@
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Enter password: *********
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Welcome to the MySQL monitor. Commands end with ; or \g.
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Your MySQL connection id is 13
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Server version: 8.0.32 MySQL Community Server - GPL
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Copyright (c) 2000, 2023, Oracle and/or its affiliates.
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Oracle is a registered trademark of Oracle Corporation and/or its
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affiliates. Other names may be trademarks of their respective
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owners.
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||||
|
||||
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
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|
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mysql> SELECT DATABASE();
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+------------+
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| DATABASE() |
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+------------+
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| rezodb |
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+------------+
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1 row in set (0.00 sec)
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mysql> CREATE TABLE emp_table (emp_no INT, emp_name VARCHAR(50), salary INT);
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Query OK, 0 rows affected (0.03 sec)
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mysql> INSERT INTO emp_table VALUES (1, '井上', 20000);
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Query OK, 1 row affected (0.01 sec)
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mysql> INSERT INTO emp_table VALUES (2, '梅田', 100000);
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Query OK, 1 row affected (0.01 sec)
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mysql> SELECT *FROM emp_table;
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+--------+----------+--------+
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| emp_no | emp_name | salary |
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+--------+----------+--------+
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| 1 | 井上 | 20000 |
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| 2 | 梅田 | 100000 |
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+--------+----------+--------+
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2 rows in set (0.00 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 (0.02 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 (0.01 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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ERROR 1054 (42S22): Unknown column ' 460' in 'field list'
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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 (10003, '坊ちゃま', '冬目漱石', 460, 1);
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Query OK, 1 row affected (0.00 sec)
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mysql> INSERT INTO book_table VALUES (10004, '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 (10005, '吾輩は犬である', '冬目漱石', 420, 1);
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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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| 10003 | 坊ちゃま | 冬目漱石 | 460 | 1 |
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| 10004 | 西方見聞録 | 不明 | 1000 | 1 |
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| 10005 | 吾輩は犬である | 冬目漱石 | 420 | 1 |
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+---------+----------------+-------------+-------+------------+
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5 rows in set (0.00 sec)
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mysql> SELECT book_name FROM book_table;
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+----------------+
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| book_name |
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+----------------+
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| TwoPeace |
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| 名探偵金田二 |
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| 坊ちゃま |
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| 西方見聞録 |
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| 吾輩は犬である |
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+----------------+
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5 rows in set (0.00 sec)
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mysql> SELECT book_name author_name FROM book_table;
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+----------------+
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| author_name |
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+----------------+
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| TwoPeace |
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| 名探偵金田二 |
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| 坊ちゃま |
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| 西方見聞録 |
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| 吾輩は犬である |
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+----------------+
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5 rows in set (0.00 sec)
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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 | 冬目漱石 |
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| 西方見聞録 | 不明 |
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| 吾輩は犬である | 冬目漱石 |
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+----------------+-------------+
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5 rows in set (0.00 sec)
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mysql> UPDATE book_table SET author_name = 'マール＝コー＝ポロ' SET sales_flag = 0 where book_id = 10004;
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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 sales_flag = 0 where book_id = 10004' at line 1
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mysql> UPDATE book_table SET author_name = 'マール＝コー＝ポロ' where book_id = 10004;
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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> UPDATE book_table ]SET sales_flag = 0 where book_id = 10004;
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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 sales_flag = 0 where book_id = 10004' at line 1
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mysql> UPDATE book_table SET sales_flag = 0 where book_id = 10004;
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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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| 10003 | 坊ちゃま | 冬目漱石 | 460 | 1 |
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| 10004 | 西方見聞録 | マール＝コー＝ポロ | 1000 | 0 |
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| 10005 | 吾輩は犬である | 冬目漱石 | 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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+---------+----------------+-------------+-------+------------+
|
||||
| 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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| 10003 | 坊ちゃま | 冬目漱石 | 460 | 1 |
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| 10005 | 吾輩は犬である | 冬目漱石 | 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 author_name = '冬目漱石' AND price = 420;
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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 ' AND price = 420' at line 1
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mysql> SELECT * FROM book_table where author_name = '冬目漱石' 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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||||
| 10005 | 吾輩は犬である | 冬目漱石 | 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 = 10003;
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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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| 10004 | 西方見聞録 | マール＝コー＝ポロ | 1000 | 0 |
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| 10005 | 吾輩は犬である | 冬目漱石 | 420 | 1 |
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+---------+----------------+--------------------+-------+------------+
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4 rows in set (0.00 sec)
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mysql>
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146
【練習問題】 SQL/Question1/Quetion1.sql
Normal file
146
【練習問題】 SQL/Question1/Quetion1.sql
Normal file
@@ -0,0 +1,146 @@
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mysql> ALTER TABLE book_table MODIFY COLUMN book_id INT COMMENT '書籍ID';
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Query OK, 0 rows affected (0.01 sec)
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Records: 0 Duplicates: 0 Warnings: 0
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mysql> ALTER TABLE book_table MODIFY COLUMN book_name VARCHAR(50) COMMENT '書籍名';
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Query OK, 0 rows affected (0.01 sec)
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Records: 0 Duplicates: 0 Warnings: 0
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mysql> ALTER TABLE book_table MODIFY COLUMN author_name VARCHAR(50) COMMENT '著者';
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Query OK, 0 rows affected (0.01 sec)
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Records: 0 Duplicates: 0 Warnings: 0
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mysql> ALTER TABLE book_table MODIFY COLUMN price INT COMMENT '価格';
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Query OK, 0 rows affected (0.04 sec)
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Records: 0 Duplicates: 0 Warnings: 0
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mysql> ALTER TABLE book_table MODIFY COLUMN sales_flag INT COMMENT '販売有無';
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Query OK, 0 rows affected (0.01 sec)
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Records: 0 Duplicates: 0 Warnings: 0
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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 'TwoPeace' 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> 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)
|
||||
|
||||
mysql> INSERT INTO book_table VALUES(10003, '坊ちゃま', '冬目漱岩', 460, 1);
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||||
Query OK, 1 row affected (0.00 sec)
|
||||
|
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mysql> UPDATE book_table SET book_id = 20001 WHERE 10003;
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Query OK, 3 rows affected (0.01 sec)
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||||
Rows matched: 3 Changed: 3 Warnings: 0
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||||
|
||||
mysql> SELECT * FROM book_table;
|
||||
+---------+--------------+-------------+-------+------------+
|
||||
| book_id | book_name | author_name | price | sales_flag |
|
||||
+---------+--------------+-------------+-------+------------+
|
||||
| 20001 | TwoPeace | 三田英一郎 | 420 | 1 |
|
||||
| 20001 | 名探偵金田二 | 青山ふみや | 460 | 1 |
|
||||
| 20001 | 坊ちゃま | 冬目漱岩 | 460 | 1 |
|
||||
+---------+--------------+-------------+-------+------------+
|
||||
3 rows in set (0.00 sec)
|
||||
|
||||
mysql> UPDATE book_table SET book_id = 10001 WHERE price = 420;
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||||
Query OK, 1 row affected (0.00 sec)
|
||||
Rows matched: 1 Changed: 1 Warnings: 0
|
||||
|
||||
mysql> UPDATE book_table SET book_id = 10002 WHERE author_name = '青山ふみや';
|
||||
Query OK, 1 row affected (0.00 sec)
|
||||
Rows matched: 1 Changed: 1 Warnings: 0
|
||||
|
||||
mysql> ^C
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mysql> SELECT * FROM book_table;
|
||||
+---------+--------------+-------------+-------+------------+
|
||||
| book_id | book_name | author_name | price | sales_flag |
|
||||
+---------+--------------+-------------+-------+------------+
|
||||
| 10001 | TwoPeace | 三田英一郎 | 420 | 1 |
|
||||
| 10002 | 名探偵金田二 | 青山ふみや | 460 | 1 |
|
||||
| 20001 | 坊ちゃま | 冬目漱岩 | 460 | 1 |
|
||||
+---------+--------------+-------------+-------+------------+
|
||||
3 rows in set (0.00 sec)
|
||||
|
||||
mysql> INSERT INTO book_table VALUES(30001, '西方見聞録', '不明', 1000, 1);
|
||||
Query OK, 1 row affected (0.00 sec)
|
||||
|
||||
mysql> INSERT INTO book_table VALUES(40010, '吾輩は犬である', '冬目漱岩', 420, 1);
|
||||
Query OK, 1 row affected (0.00 sec)
|
||||
|
||||
mysql> SELECT * FROM book_table;
|
||||
+---------+----------------+-------------+-------+------------+
|
||||
| book_id | book_name | author_name | price | sales_flag |
|
||||
+---------+----------------+-------------+-------+------------+
|
||||
| 10001 | TwoPeace | 三田英一郎 | 420 | 1 |
|
||||
| 10002 | 名探偵金田二 | 青山ふみや | 460 | 1 |
|
||||
| 20001 | 坊ちゃま | 冬目漱岩 | 460 | 1 |
|
||||
| 30001 | 西方見聞録 | 不明 | 1000 | 1 |
|
||||
| 40010 | 吾輩は犬である | 冬目漱岩 | 420 | 1 |
|
||||
+---------+----------------+-------------+-------+------------+
|
||||
5 rows in set (0.00 sec)
|
||||
|
||||
mysql> SELECT book_name,author_name FROM book_table;
|
||||
+----------------+-------------+
|
||||
| book_name | author_name |
|
||||
+----------------+-------------+
|
||||
| TwoPeace | 三田英一郎 |
|
||||
| 名探偵金田二 | 青山ふみや |
|
||||
| 坊ちゃま | 冬目漱岩 |
|
||||
| 西方見聞録 | 不明 |
|
||||
| 吾輩は犬である | 冬目漱岩 |
|
||||
+----------------+-------------+
|
||||
5 rows in set (0.00 sec)
|
||||
|
||||
mysql> UPDATE book_table SET author_name = 'マール＝コー＝ポロ' WHERE book_id = 30001;
|
||||
Query OK, 1 row affected (0.00 sec)
|
||||
Rows matched: 1 Changed: 1 Warnings: 0
|
||||
|
||||
mysql> UPDATE book_table SET sales_flag = 0 WHERE book_id = 30001;
|
||||
Query OK, 1 row affected (0.01 sec)
|
||||
Rows matched: 1 Changed: 1 Warnings: 0
|
||||
|
||||
mysql> SELECT * FROM book_table;
|
||||
+---------+----------------+--------------------+-------+------------+
|
||||
| book_id | book_name | author_name | price | sales_flag |
|
||||
+---------+----------------+--------------------+-------+------------+
|
||||
| 10001 | TwoPeace | 三田英一郎 | 420 | 1 |
|
||||
| 10002 | 名探偵金田二 | 青山ふみや | 460 | 1 |
|
||||
| 20001 | 坊ちゃま | 冬目漱岩 | 460 | 1 |
|
||||
| 30001 | 西方見聞録 | マール＝コー＝ポロ | 1000 | 0 |
|
||||
| 40010 | 吾輩は犬である | 冬目漱岩 | 420 | 1 |
|
||||
+---------+----------------+--------------------+-------+------------+
|
||||
5 rows in set (0.00 sec)
|
||||
|
||||
mysql> SELECT * FROM book_table where sales_flag = 1;
|
||||
+---------+----------------+-------------+-------+------------+
|
||||
| book_id | book_name | author_name | price | sales_flag |
|
||||
+---------+----------------+-------------+-------+------------+
|
||||
| 10001 | TwoPeace | 三田英一郎 | 420 | 1 |
|
||||
| 10002 | 名探偵金田二 | 青山ふみや | 460 | 1 |
|
||||
| 20001 | 坊ちゃま | 冬目漱岩 | 460 | 1 |
|
||||
| 40010 | 吾輩は犬である | 冬目漱岩 | 420 | 1 |
|
||||
+---------+----------------+-------------+-------+------------+
|
||||
4 rows in set (0.00 sec)
|
||||
|
||||
mysql> SELECT * FROM book_table where author_name ='冬目漱岩'AND price= 420;
|
||||
+---------+----------------+-------------+-------+------------+
|
||||
| book_id | book_name | author_name | price | sales_flag |
|
||||
+---------+----------------+-------------+-------+------------+
|
||||
| 40010 | 吾輩は犬である | 冬目漱岩 | 420 | 1 |
|
||||
+---------+----------------+-------------+-------+------------+
|
||||
1 row in set (0.00 sec)
|
||||
|
||||
mysql> DELETE FROM book_table where book_id = 20001;
|
||||
Query OK, 1 row affected (0.00 sec)
|
||||
|
||||
mysql> SELECT * FROM book_table;
|
||||
+---------+----------------+--------------------+-------+------------+
|
||||
| book_id | book_name | author_name | price | sales_flag |
|
||||
+---------+----------------+--------------------+-------+------------+
|
||||
| 10001 | TwoPeace | 三田英一郎 | 420 | 1 |
|
||||
| 10002 | 名探偵金田二 | 青山ふみや | 460 | 1 |
|
||||
| 30001 | 西方見聞録 | マール＝コー＝ポロ | 1000 | 0 |
|
||||
| 40010 | 吾輩は犬である | 冬目漱岩 | 420 | 1 |
|
||||
+---------+----------------+--------------------+-------+------------+
|
||||
4 rows in set (0.00 sec)
|
||||
122
【練習問題】 SQL/Question2/Question2.sql
Normal file
122
【練習問題】 SQL/Question2/Question2.sql
Normal file
@@ -0,0 +1,122 @@
|
||||
mysql> CREATE TABLE item_category (category_id INT,category_name VARCHAR(256));
|
||||
Query OK, 0 rows affected (0.02 sec)
|
||||
|
||||
mysql> INSERT INTO item_category VALUES (1,'家具');
|
||||
Query OK, 1 row affected (0.00 sec)
|
||||
|
||||
mysql> INSERT INTO item_category VALUES (2,'飲料');
|
||||
Query OK, 1 row affected (0.00 sec)
|
||||
|
||||
mysql> INSERT INTO item_category VALUES (3,'食品');
|
||||
Query OK, 1 row affected (0.05 sec)
|
||||
|
||||
mysql> SELECT * FROM item_category;
|
||||
+-------------+---------------+
|
||||
| category_id | category_name |
|
||||
+-------------+---------------+
|
||||
| 1 | 家具 |
|
||||
| 2 | 飲料 |
|
||||
| 3 | 食品 |
|
||||
+-------------+---------------+
|
||||
3 rows in set (0.00 sec)
|
||||
|
||||
mysql> CREATE TABLE items(item_id INT, name VARCHAR(256), price INT, category_id INT);
|
||||
Query OK, 0 rows affected (0.02 sec)
|
||||
|
||||
mysql> INSERT INTO items VALUES (1,'ローマのテーブル', 150000, 1);
|
||||
Query OK, 1 row affected (0.01 sec)
|
||||
|
||||
mysql> INSERT INTO items VALUES (2,'げーたるーど2000 500ml', 370, 2);
|
||||
Query OK, 1 row affected (0.00 sec)
|
||||
|
||||
mysql> INSERT INTO items VALUES (3,'原始肉', 2500, 3);
|
||||
Query OK, 1 row affected (0.00 sec)
|
||||
|
||||
mysql> INSERT INTO items VALUES (4,'魅惑の椅子', 100000, 1);
|
||||
Query OK, 1 row affected (0.05 sec)
|
||||
|
||||
mysql> SELECT * FROM items;
|
||||
+---------+------------------------+--------+-------------+
|
||||
| item_id | name | price | category_id |
|
||||
+---------+------------------------+--------+-------------+
|
||||
| 1 | ローマのテーブル | 150000 | 1 |
|
||||
| 2 | げーたるーど2000 500ml | 370 | 2 |
|
||||
| 3 | 原始肉 | 2500 | 3 |
|
||||
| 4 | 魅惑の椅子 | 100000 | 1 |
|
||||
+---------+------------------------+--------+-------------+
|
||||
4 rows in set (0.05 sec)
|
||||
|
||||
mysql> SELECT * FROM item_category LEFT JOIN items USING(category_id);
|
||||
+-------------+---------------+---------+------------------------+--------+
|
||||
| category_id | category_name | item_id | name | price |
|
||||
+-------------+---------------+---------+------------------------+--------+
|
||||
| 1 | 家具 | 4 | 魅惑の椅子 | 100000 |
|
||||
| 1 | 家具 | 1 | ローマのテーブル | 150000 |
|
||||
| 2 | 飲料 | 2 | げーたるーど2000 500ml | 370 |
|
||||
| 3 | 食品 | 3 | 原始肉 | 2500 |
|
||||
+-------------+---------------+---------+------------------------+--------+
|
||||
4 rows in set (0.00 sec)
|
||||
|
||||
mysql> SELECT * FROM item_category RIGHT JOIN items USING(category_id);
|
||||
+-------------+---------+------------------------+--------+---------------+
|
||||
| category_id | item_id | name | price | category_name |
|
||||
+-------------+---------+------------------------+--------+---------------+
|
||||
| 1 | 1 | ローマのテーブル | 150000 | 家具 |
|
||||
| 2 | 2 | げーたるーど2000 500ml | 370 | 飲料 |
|
||||
| 3 | 3 | 原始肉 | 2500 | 食品 |
|
||||
| 1 | 4 | 魅惑の椅子 | 100000 | 家具 |
|
||||
+-------------+---------+------------------------+--------+---------------+
|
||||
4 rows in set (0.00 sec)
|
||||
|
||||
mysql> SELECT * FROM item_category RIGHT JOIN items USING(category_id) ORDER BY price ASC;
|
||||
+-------------+---------+------------------------+--------+---------------+
|
||||
| category_id | item_id | name | price | category_name |
|
||||
+-------------+---------+------------------------+--------+---------------+
|
||||
| 2 | 2 | げーたるーど2000 500ml | 370 | 飲料 |
|
||||
| 3 | 3 | 原始肉 | 2500 | 食品 |
|
||||
| 1 | 4 | 魅惑の椅子 | 100000 | 家具 |
|
||||
| 1 | 1 | ローマのテーブル | 150000 | 家具 |
|
||||
+-------------+---------+------------------------+--------+---------------+
|
||||
4 rows in set (0.00 sec)
|
||||
|
||||
mysql> SELECT * FROM item_category RIGHT JOIN items USING(category_id) where category_name = '家具';
|
||||
+-------------+---------+------------------+--------+---------------+
|
||||
| category_id | item_id | name | price | category_name |
|
||||
+-------------+---------+------------------+--------+---------------+
|
||||
| 1 | 1 | ローマのテーブル | 150000 | 家具 |
|
||||
| 1 | 4 | 魅惑の椅子 | 100000 | 家具 |
|
||||
+-------------+---------+------------------+--------+---------------+
|
||||
2 rows in set (0.00 sec)
|
||||
|
||||
mysql> SELECT * FROM item_category RIGHT JOIN items USING(category_id) where price > 1000 AND price < 50000;
|
||||
+-------------+---------+--------+-------+---------------+
|
||||
| category_id | item_id | name | price | category_name |
|
||||
+-------------+---------+--------+-------+---------------+
|
||||
| 3 | 3 | 原始肉 | 2500 | 食品 |
|
||||
+-------------+---------+--------+-------+---------------+
|
||||
1 row in set (0.00 sec)
|
||||
|
||||
mysql> SELECT COUNT(*) AS data_count FROM items;
|
||||
+------------+
|
||||
| data_count |
|
||||
+------------+
|
||||
| 4 |
|
||||
+------------+
|
||||
1 row in set (0.01 sec)
|
||||
|
||||
mysql> SELECT * FROM item_category RIGHT JOIN items USING(category_id) WHERE price = (SELECT MAX(price) FROM items);
|
||||
+-------------+---------+------------------+--------+---------------+
|
||||
| category_id | item_id | name | price | category_name |
|
||||
+-------------+---------+------------------+--------+---------------+
|
||||
| 1 | 1 | ローマのテーブル | 150000 | 家具 |
|
||||
+-------------+---------+------------------+--------+---------------+
|
||||
1 row in set (0.00 sec)
|
||||
|
||||
mysql> SELECT * FROM item_category RIGHT JOIN items USING(category_id) WHERE name LIKE '%の%';
|
||||
+-------------+---------+------------------+--------+---------------+
|
||||
| category_id | item_id | name | price | category_name |
|
||||
+-------------+---------+------------------+--------+---------------+
|
||||
| 1 | 1 | ローマのテーブル | 150000 | 家具 |
|
||||
| 1 | 4 | 魅惑の椅子 | 100000 | 家具 |
|
||||
+-------------+---------+------------------+--------+---------------+
|
||||
2 rows in set (0.00 sec)
|
||||
@@ -1,391 +0,0 @@
|
||||
Enter password: *********
|
||||
Welcome to the MySQL monitor. Commands end with ; or \g.
|
||||
Your MySQL connection id is 13
|
||||
Server version: 8.0.32 MySQL Community Server - GPL
|
||||
|
||||
Copyright (c) 2000, 2023, Oracle and/or its affiliates.
|
||||
|
||||
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 DATABASE();
|
||||
+------------+
|
||||
| DATABASE() |
|
||||
+------------+
|
||||
| rezodb |
|
||||
+------------+
|
||||
1 row in set (0.00 sec)
|
||||
|
||||
mysql> CREATE TABLE emp_table (emp_no INT, emp_name VARCHAR(50), salary INT);
|
||||
Query OK, 0 rows affected (0.03 sec)
|
||||
|
||||
mysql> INSERT INTO emp_table VALUES (1, '井上', 20000);
|
||||
Query OK, 1 row affected (0.01 sec)
|
||||
|
||||
mysql> INSERT INTO emp_table VALUES (2, '梅田', 100000);
|
||||
Query OK, 1 row affected (0.01 sec)
|
||||
|
||||
mysql> SELECT *FROM emp_table;
|
||||
+--------+----------+--------+
|
||||
| emp_no | emp_name | salary |
|
||||
+--------+----------+--------+
|
||||
| 1 | 井上 | 20000 |
|
||||
| 2 | 梅田 | 100000 |
|
||||
+--------+----------+--------+
|
||||
2 rows in set (0.00 sec)
|
||||
|
||||
mysql> CREATE TABLE book_table (book_id INT, book_name VARCHAR(50), author_name VARCHAR(50), price INT, sales_flag INT);
|
||||
Query OK, 0 rows affected (0.02 sec)
|
||||
|
||||
mysql> INSERT INTO book_table VALUES (10001, 'TwoPeace', '三田英一郎', 420, 1);
|
||||
ERROR 1054 (42S22): Unknown column ' 420' in 'field list'
|
||||
mysql> INSERT INTO book_table VALUES (10001, 'TwoPeace', '三田英一郎', 420, 1);
|
||||
Query OK, 1 row affected (0.01 sec)
|
||||
|
||||
mysql> INSERT INTO book_table VALUES (10002, '名探偵金田二', '青山ふみや', 460, 1);
|
||||
ERROR 1054 (42S22): Unknown column ' 460' in 'field list'
|
||||
mysql> INSERT INTO book_table VALUES (10002, '名探偵金田二', '青山ふみや', 460, 1);
|
||||
Query OK, 1 row affected (0.00 sec)
|
||||
|
||||
mysql> INSERT INTO book_table VALUES (10003, '坊ちゃま', '冬目漱石', 460, 1);
|
||||
Query OK, 1 row affected (0.00 sec)
|
||||
|
||||
mysql> INSERT INTO book_table VALUES (10004, '西方見聞録', '不明', 1000, 1);
|
||||
Query OK, 1 row affected (0.01 sec)
|
||||
|
||||
mysql> INSERT INTO book_table VALUES (10005, '吾輩は犬である', '冬目漱石', 420, 1);
|
||||
Query OK, 1 row affected (0.01 sec)
|
||||
|
||||
mysql> SELECT * FROM book_table;
|
||||
+---------+----------------+-------------+-------+------------+
|
||||
| book_id | book_name | author_name | price | sales_flag |
|
||||
+---------+----------------+-------------+-------+------------+
|
||||
| 10001 | TwoPeace | 三田英一郎 | 420 | 1 |
|
||||
| 10002 | 名探偵金田二 | 青山ふみや | 460 | 1 |
|
||||
| 10003 | 坊ちゃま | 冬目漱石 | 460 | 1 |
|
||||
| 10004 | 西方見聞録 | 不明 | 1000 | 1 |
|
||||
| 10005 | 吾輩は犬である | 冬目漱石 | 420 | 1 |
|
||||
+---------+----------------+-------------+-------+------------+
|
||||
5 rows in set (0.00 sec)
|
||||
|
||||
mysql> SELECT book_name FROM book_table;
|
||||
+----------------+
|
||||
| book_name |
|
||||
+----------------+
|
||||
| TwoPeace |
|
||||
| 名探偵金田二 |
|
||||
| 坊ちゃま |
|
||||
| 西方見聞録 |
|
||||
| 吾輩は犬である |
|
||||
+----------------+
|
||||
5 rows in set (0.00 sec)
|
||||
|
||||
mysql> SELECT book_name author_name FROM book_table;
|
||||
+----------------+
|
||||
| author_name |
|
||||
+----------------+
|
||||
| TwoPeace |
|
||||
| 名探偵金田二 |
|
||||
| 坊ちゃま |
|
||||
| 西方見聞録 |
|
||||
| 吾輩は犬である |
|
||||
+----------------+
|
||||
5 rows in set (0.00 sec)
|
||||
|
||||
mysql> SELECT book_name, author_name FROM book_table;
|
||||
+----------------+-------------+
|
||||
| book_name | author_name |
|
||||
+----------------+-------------+
|
||||
| TwoPeace | 三田英一郎 |
|
||||
| 名探偵金田二 | 青山ふみや |
|
||||
| 坊ちゃま | 冬目漱石 |
|
||||
| 西方見聞録 | 不明 |
|
||||
| 吾輩は犬である | 冬目漱石 |
|
||||
+----------------+-------------+
|
||||
5 rows in set (0.00 sec)
|
||||
|
||||
mysql> UPDATE book_table SET author_name = 'マール＝コー＝ポロ' SET sales_flag = 0 where book_id = 10004;
|
||||
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 sales_flag = 0 where book_id = 10004' at line 1
|
||||
mysql> UPDATE book_table SET author_name = 'マール＝コー＝ポロ' where book_id = 10004;
|
||||
Query OK, 1 row affected (0.01 sec)
|
||||
Rows matched: 1 Changed: 1 Warnings: 0
|
||||
|
||||
mysql> UPDATE book_table ]SET sales_flag = 0 where book_id = 10004;
|
||||
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 sales_flag = 0 where book_id = 10004' at line 1
|
||||
mysql> UPDATE book_table SET sales_flag = 0 where book_id = 10004;
|
||||
Query OK, 1 row affected (0.01 sec)
|
||||
Rows matched: 1 Changed: 1 Warnings: 0
|
||||
|
||||
mysql> SELECT * FROM book_table;
|
||||
+---------+----------------+--------------------+-------+------------+
|
||||
| book_id | book_name | author_name | price | sales_flag |
|
||||
+---------+----------------+--------------------+-------+------------+
|
||||
| 10001 | TwoPeace | 三田英一郎 | 420 | 1 |
|
||||
| 10002 | 名探偵金田二 | 青山ふみや | 460 | 1 |
|
||||
| 10003 | 坊ちゃま | 冬目漱石 | 460 | 1 |
|
||||
| 10004 | 西方見聞録 | マール＝コー＝ポロ | 1000 | 0 |
|
||||
| 10005 | 吾輩は犬である | 冬目漱石 | 420 | 1 |
|
||||
+---------+----------------+--------------------+-------+------------+
|
||||
5 rows in set (0.00 sec)
|
||||
|
||||
mysql> SELECT * FROM book_table where sales_flag = 1;
|
||||
+---------+----------------+-------------+-------+------------+
|
||||
| book_id | book_name | author_name | price | sales_flag |
|
||||
+---------+----------------+-------------+-------+------------+
|
||||
| 10001 | TwoPeace | 三田英一郎 | 420 | 1 |
|
||||
| 10002 | 名探偵金田二 | 青山ふみや | 460 | 1 |
|
||||
| 10003 | 坊ちゃま | 冬目漱石 | 460 | 1 |
|
||||
| 10005 | 吾輩は犬である | 冬目漱石 | 420 | 1 |
|
||||
+---------+----------------+-------------+-------+------------+
|
||||
4 rows in set (0.00 sec)
|
||||
|
||||
mysql> SELECT * FROM book_table where author_name = '冬目漱石' AND price = 420;
|
||||
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 ' AND price = 420' at line 1
|
||||
mysql> SELECT * FROM book_table where author_name = '冬目漱石' AND price = 420;
|
||||
+---------+----------------+-------------+-------+------------+
|
||||
| book_id | book_name | author_name | price | sales_flag |
|
||||
+---------+----------------+-------------+-------+------------+
|
||||
| 10005 | 吾輩は犬である | 冬目漱石 | 420 | 1 |
|
||||
+---------+----------------+-------------+-------+------------+
|
||||
1 row in set (0.00 sec)
|
||||
|
||||
mysql> DELETE FROM book_table WHERE book_id = 10003;
|
||||
Query OK, 1 row affected (0.00 sec)
|
||||
|
||||
mysql> SELECT * FROM book_table;
|
||||
+---------+----------------+--------------------+-------+------------+
|
||||
| book_id | book_name | author_name | price | sales_flag |
|
||||
+---------+----------------+--------------------+-------+------------+
|
||||
| 10001 | TwoPeace | 三田英一郎 | 420 | 1 |
|
||||
| 10002 | 名探偵金田二 | 青山ふみや | 460 | 1 |
|
||||
| 10004 | 西方見聞録 | マール＝コー＝ポロ | 1000 | 0 |
|
||||
| 10005 | 吾輩は犬である | 冬目漱石 | 420 | 1 |
|
||||
+---------+----------------+--------------------+-------+------------+
|
||||
4 rows in set (0.00 sec)
|
||||
|
||||
mysql> CREATE TABLE item_category (category_id INT, category_name VARCHAR(256));
|
||||
Query OK, 0 rows affected (0.03 sec)
|
||||
|
||||
mysql> INSERT INTO item_category (1, '家具');
|
||||
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 '1, '家具')' at line 1
|
||||
mysql> INSERT INTO item_category (1, '家具');
|
||||
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 '1, '家具')' at line 1
|
||||
mysql> INSERT INTO item_category VALUES (1, '家具');
|
||||
Query OK, 1 row affected (0.01 sec)
|
||||
|
||||
mysql> INSERT INTO item_category VALUES (2, '飲料');
|
||||
Query OK, 1 row affected (0.01 sec)
|
||||
|
||||
mysql> INSERT INTO item_category VALUES (3, '食品');
|
||||
Query OK, 1 row affected (0.00 sec)
|
||||
|
||||
mysql> SELECT * FROM item_table
|
||||
-> ^C
|
||||
mysql> SELECT * FROM item_table;
|
||||
ERROR 1146 (42S02): Table 'rezodb.item_table' doesn't exist
|
||||
mysql> SELECT * FROM item_category;
|
||||
+-------------+---------------+
|
||||
| category_id | category_name |
|
||||
+-------------+---------------+
|
||||
| 1 | 家具 |
|
||||
| 2 | 飲料 |
|
||||
| 3 | 食品 |
|
||||
+-------------+---------------+
|
||||
3 rows in set (0.00 sec)
|
||||
|
||||
mysql> CREATE TABLE items(item_id INT, name VARCHAR(256), price INT, category_id INT);
|
||||
Query OK, 0 rows affected (0.02 sec)
|
||||
|
||||
mysql> INSERT INTO items VALUES (1, 'ローマのテーブル' 150000, 1);
|
||||
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 ' 150000, 1)' at line 1
|
||||
mysql> INSERT INTO items VALUES (1, 'ローマのテーブル', 150000, 1);
|
||||
Query OK, 1 row affected (0.00 sec)
|
||||
|
||||
mysql> INSERT INTO items VALUES (2, 'げーたるーど2000 500ml', 370, 2);
|
||||
Query OK, 1 row affected (0.01 sec)
|
||||
|
||||
mysql> INSERT INTO items VALUES (3, '原子肉', 2500, 3);
|
||||
Query OK, 1 row affected (0.01 sec)
|
||||
|
||||
mysql> INSERT INTO items VALUES (4, '魅惑の椅子', 100000, 1);
|
||||
Query OK, 1 row affected (0.01 sec)
|
||||
|
||||
mysql> SELECT * FROM item;
|
||||
ERROR 1146 (42S02): Table 'rezodb.item' doesn't exist
|
||||
mysql> SELECT * FROM items;
|
||||
+---------+------------------------+--------+-------------+
|
||||
| item_id | name | price | category_id |
|
||||
+---------+------------------------+--------+-------------+
|
||||
| 1 | ローマのテーブル | 150000 | 1 |
|
||||
| 2 | げーたるーど2000 500ml | 370 | 2 |
|
||||
| 3 | 原子肉 | 2500 | 3 |
|
||||
| 4 | 魅惑の椅子 | 100000 | 1 |
|
||||
+---------+------------------------+--------+-------------+
|
||||
4 rows in set (0.00 sec)
|
||||
|
||||
mysql> SELECT * FROM item_category INNER JOIN item ON item_category.category_id = item.category_id;
|
||||
ERROR 1146 (42S02): Table 'rezodb.item' doesn't exist
|
||||
mysql> SELECT * FROM item_category INNER JOIN item ON item_category.category_id = items.category_id;
|
||||
ERROR 1146 (42S02): Table 'rezodb.item' doesn't exist
|
||||
mysql> SELECT * FROM item_category INNER JOIN items ON item_category.category_id = items.category_id;
|
||||
+-------------+---------------+---------+------------------------+--------+-------------+
|
||||
| category_id | category_name | item_id | name | price | category_id |
|
||||
+-------------+---------------+---------+------------------------+--------+-------------+
|
||||
| 1 | 家具 | 1 | ローマのテーブル | 150000 | 1 |
|
||||
| 2 | 飲料 | 2 | げーたるーど2000 500ml | 370 | 2 |
|
||||
| 3 | 食品 | 3 | 原子肉 | 2500 | 3 |
|
||||
| 1 | 家具 | 4 | 魅惑の椅子 | 100000 | 1 |
|
||||
+-------------+---------------+---------+------------------------+--------+-------------+
|
||||
4 rows in set (0.00 sec)
|
||||
|
||||
mysql> SELECT item.category.category_id AS items.category_id FROM item_category INNER JOIN item ON item_category.category_id = items.category_id;
|
||||
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 '.category_id FROM item_category INNER JOIN item ON item_category.category_id = i' at line 1
|
||||
mysql> SELECT * FROM item_category INNER JOIN items ON item_category.category_id = items.category_id;
|
||||
+-------------+---------------+---------+------------------------+--------+-------------+
|
||||
| category_id | category_name | item_id | name | price | category_id |
|
||||
+-------------+---------------+---------+------------------------+--------+-------------+
|
||||
| 1 | 家具 | 1 | ローマのテーブル | 150000 | 1 |
|
||||
| 2 | 飲料 | 2 | げーたるーど2000 500ml | 370 | 2 |
|
||||
| 3 | 食品 | 3 | 原子肉 | 2500 | 3 |
|
||||
| 1 | 家具 | 4 | 魅惑の椅子 | 100000 | 1 |
|
||||
+-------------+---------------+---------+------------------------+--------+-------------+
|
||||
4 rows in set (0.00 sec)
|
||||
|
||||
mysql> SELECT * FROM item_category INNER JOIN items ON USING (category_id);
|
||||
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 'USING (category_id)' at line 1
|
||||
mysql> SELECT * FROM item_category INNER JOIN items ON USING (category_id);
|
||||
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 'USING (category_id)' at line 1
|
||||
mysql> SELECT * FROM items INNER JOIN item_category USING (category_id);
|
||||
+-------------+---------+------------------------+--------+---------------+
|
||||
| category_id | item_id | name | price | category_name |
|
||||
+-------------+---------+------------------------+--------+---------------+
|
||||
| 1 | 1 | ローマのテーブル | 150000 | 家具 |
|
||||
| 2 | 2 | げーたるーど2000 500ml | 370 | 飲料 |
|
||||
| 3 | 3 | 原子肉 | 2500 | 食品 |
|
||||
| 1 | 4 | 魅惑の椅子 | 100000 | 家具 |
|
||||
+-------------+---------+------------------------+--------+---------------+
|
||||
4 rows in set (0.00 sec)
|
||||
|
||||
mysql> SELECT * FROM items;
|
||||
+---------+------------------------+--------+-------------+
|
||||
| item_id | name | price | category_id |
|
||||
+---------+------------------------+--------+-------------+
|
||||
| 1 | ローマのテーブル | 150000 | 1 |
|
||||
| 2 | げーたるーど2000 500ml | 370 | 2 |
|
||||
| 3 | 原子肉 | 2500 | 3 |
|
||||
| 4 | 魅惑の椅子 | 100000 | 1 |
|
||||
+---------+------------------------+--------+-------------+
|
||||
4 rows in set (0.00 sec)
|
||||
|
||||
mysql> SELECT * FROM items INNER JOIN item_category USING (category_id) OEDER BY price ASC;
|
||||
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 'OEDER BY price ASC' at line 1
|
||||
mysql> SELECT * FROM items INNER JOIN item_category USING (category_id) ORDER BY price ASC;
|
||||
+-------------+---------+------------------------+--------+---------------+
|
||||
| category_id | item_id | name | price | category_name |
|
||||
+-------------+---------+------------------------+--------+---------------+
|
||||
| 2 | 2 | げーたるーど2000 500ml | 370 | 飲料 |
|
||||
| 3 | 3 | 原子肉 | 2500 | 食品 |
|
||||
| 1 | 4 | 魅惑の椅子 | 100000 | 家具 |
|
||||
| 1 | 1 | ローマのテーブル | 150000 | 家具 |
|
||||
+-------------+---------+------------------------+--------+---------------+
|
||||
4 rows in set (0.00 sec)
|
||||
|
||||
mysql> SELECT * FROM items INNER JOIN item_category USING (category_id) WHERE category_name = '家具';
|
||||
+-------------+---------+------------------+--------+---------------+
|
||||
| category_id | item_id | name | price | category_name |
|
||||
+-------------+---------+------------------+--------+---------------+
|
||||
| 1 | 1 | ローマのテーブル | 150000 | 家具 |
|
||||
| 1 | 4 | 魅惑の椅子 | 100000 | 家具 |
|
||||
+-------------+---------+------------------+--------+---------------+
|
||||
2 rows in set (0.00 sec)
|
||||
|
||||
mysql> SELECT * FROM items INNER JOIN item_category USING (category_id) WHERE price > 1000 AND price < 50000;
|
||||
+-------------+---------+--------+-------+---------------+
|
||||
| category_id | item_id | name | price | category_name |
|
||||
+-------------+---------+--------+-------+---------------+
|
||||
| 3 | 3 | 原子肉 | 2500 | 食品 |
|
||||
+-------------+---------+--------+-------+---------------+
|
||||
1 row in set (0.00 sec)
|
||||
|
||||
mysql> SELECT COUNT (*) AS data_count from items;
|
||||
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 '*) AS data_count from items' at line 1
|
||||
mysql> SELECT COUNT () AS data_count from items;
|
||||
ERROR 1630 (42000): FUNCTION rezodb.COUNT does not exist. Check the 'Function Name Parsing and Resolution' section in the Reference Manual
|
||||
mysql> SELECT COUNT (*) AS data_count from items;
|
||||
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 '*) AS data_count from items' at line 1
|
||||
mysql> SELECT COUNT (*) AS data_count FROM items;
|
||||
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 '*) AS data_count FROM items' at line 1
|
||||
mysql> SELECT COUNT (*) FROM items;
|
||||
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 '*) FROM items' at line 1
|
||||
mysql> SELECT COUNT(*) FROM items;
|
||||
+----------+
|
||||
| COUNT(*) |
|
||||
+----------+
|
||||
| 4 |
|
||||
+----------+
|
||||
1 row in set (0.01 sec)
|
||||
|
||||
mysql> SELECT COUNT(*) AS data_count FROM items;
|
||||
+------------+
|
||||
| data_count |
|
||||
+------------+
|
||||
| 4 |
|
||||
+------------+
|
||||
1 row in set (0.00 sec)
|
||||
|
||||
mysql> SELECT * FROM items INNER JOIN item_category USING (category_id) s
|
||||
-> ^C
|
||||
mysql> SELECT * FROM items INNER JOIN item_category USING (category_id) WHERE score = MIN (score)
|
||||
-> ^C
|
||||
mysql> SELECT * FROM items INNER JOIN item_category USING (category_id) WHERE score = MIN (score);
|
||||
ERROR 1054 (42S22): Unknown column 'score' in 'where clause'
|
||||
mysql> SELECT * FROM items INNER JOIN item_category USING (category_id) WHERE score = (MIN (score) FROM items);
|
||||
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 'FROM items)' at line 1
|
||||
mysql> SELECT * FROM items INNER JOIN item_category USING (category_id) WHERE score = (MIN(score) FROM items);
|
||||
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 'FROM items)' at line 1
|
||||
mysql> SELECT * FROM items INNER JOIN item_category USING (category_id) WHERE score = (MAX(price) FROM items);
|
||||
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 'FROM items)' at line 1
|
||||
mysql> mysql> SELECT * FROM items WHERE price = (SELECT MAX(price) FROM items);
|
||||
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 'mysql> SELECT * FROM items WHERE price = (SELECT MAX(price) FROM items)' at line 1
|
||||
mysql> SELECT * FROM items INNER JOIN item_category USING (category_id);
|
||||
+-------------+---------+------------------------+--------+---------------+
|
||||
| category_id | item_id | name | price | category_name |
|
||||
+-------------+---------+------------------------+--------+---------------+
|
||||
| 1 | 1 | ローマのテーブル | 150000 | 家具 |
|
||||
| 2 | 2 | げーたるーど2000 500ml | 370 | 飲料 |
|
||||
| 3 | 3 | 原子肉 | 2500 | 食品 |
|
||||
| 1 | 4 | 魅惑の椅子 | 100000 | 家具 |
|
||||
+-------------+---------+------------------------+--------+---------------+
|
||||
4 rows in set (0.00 sec)
|
||||
|
||||
mysql> SELECT * FROM items INNER JOIN item_category USING (category_id) WHERE price = (MAX(price) FROM items);
|
||||
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 'FROM items)' at line 1
|
||||
mysql> SELECT * FROM items WHERE price = (SELECT MAX(price) FROM items);
|
||||
+---------+------------------+--------+-------------+
|
||||
| item_id | name | price | category_id |
|
||||
+---------+------------------+--------+-------------+
|
||||
| 1 | ローマのテーブル | 150000 | 1 |
|
||||
+---------+------------------+--------+-------------+
|
||||
1 row in set (0.00 sec)
|
||||
|
||||
mysql> SELECT * FROM items INNER JOIN item_category USING (category_id) WHERE price = (SELECT MAX(price) FROM items);
|
||||
+-------------+---------+------------------+--------+---------------+
|
||||
| category_id | item_id | name | price | category_name |
|
||||
+-------------+---------+------------------+--------+---------------+
|
||||
| 1 | 1 | ローマのテーブル | 150000 | 家具 |
|
||||
+-------------+---------+------------------+--------+---------------+
|
||||
1 row in set (0.00 sec)
|
||||
|
||||
mysql> SELECT * FROM items INNER JOIN item_category USING (category_id) WHERE name LIKE '%の%';
|
||||
+-------------+---------+------------------+--------+---------------+
|
||||
| category_id | item_id | name | price | category_name |
|
||||
+-------------+---------+------------------+--------+---------------+
|
||||
| 1 | 4 | 魅惑の椅子 | 100000 | 家具 |
|
||||
| 1 | 1 | ローマのテーブル | 150000 | 家具 |
|
||||
+-------------+---------+------------------+--------+---------------+
|
||||
2 rows in set (0.00 sec)
|
||||
|
||||
mysql>
|
||||
Reference in New Issue
Block a user