一、創建數據庫（默認字符集和排序規則）

（1）創建數據庫

1. mysql> CREATE DATABASE my_db1;
2. Query OK, 1 row affected (0.00 sec)

（2）因為my_db1已經存在，再次創建會報錯

1. mysql> CREATE DATABASE my_db1;
2. ERROR 1007 (HY000): Can‘t create database ‘my_db1‘; database exists

（4）加上IF NOT EXISTS就算數據庫已經存在，把原來的覆蓋掉了

1. mysql> CREATE DATABASE IF NOT EXISTS my_db1;
2. Query OK, 1 row affected, 1 warning (0.00 sec)

二、創建數據庫包含字符集和排序規則

（1）查看mysql字符集

1. mysql> SHOW CHARACTER SET;
2. +----------+-----------------------------+---------------------+--------+
3. | Charset | Description | Default collation | Maxlen |
4. +----------+-----------------------------+---------------------+--------+
5. | big5 | Big5 Traditional Chinese | big5_chinese_ci | 2 |
6. | dec8 | DEC West European | dec8_swedish_ci | 1 |
7. | cp850 | DOS West European | cp850_general_ci | 1 |
8. | hp8 | HP West European | hp8_english_ci | 1 |
9. | koi8r | KOI8-R Relcom Russian | koi8r_general_ci | 1 |
10. | latin1 | cp1252 West European | latin1_swedish_ci | 1 |
11. .......

（2）查看mysql排序規則

1. mysql> SHOW COLLATION;
2. +--------------------------+----------+-----+---------+----------+---------+
3. | Collation | Charset | Id | Default | Compiled | Sortlen |
4. +--------------------------+----------+-----+---------+----------+---------+
5. | big5_chinese_ci | big5 | 1 | Yes | Yes | 1 |
6. | big5_bin | big5 | 84 | | Yes | 1 |
7. | dec8_swedish_ci | dec8 | 3 | Yes | Yes | 1 |
8. | dec8_bin | dec8 | 69 | | Yes | 1 |
9. | cp850_general_ci | cp850 | 4 | Yes | Yes | 1 |
10. | cp850_bin | cp850 | 80 | | Yes | 1 |
11. | hp8_english_ci | hp8 | 6 | Yes | Yes | 1 |
12. .................

（3）創建數據庫包括字符集和排序規則

1. mysql> CREATE DATABASE IF NOT EXISTS hdu CHARACTER SET ‘gbk‘ COLLATE ‘gbk_chinese_ci‘;
2. Query OK, 1 row affected (0.00 sec)

三、刪除數據庫

1. mysql> DROP DATABASE my_db1;
2. Query OK, 0 rows affected (0.00 sec)

mysql數據庫創建、刪除數據庫