mysql官方測試庫

sql語句優化時沒有測試數據，oracle官方提供測試數據

https://dev.mysql.com/doc/employee/en/employees-installation.html

　到 https://github.com/datacharmer/test_db下載

安裝

unzip test_db-master.zip
mysql -u root -p  -t < employees.sql
mysql -u root -p  -t < employees_partitioned.sql
測試安裝的數據
mysql -u root -p  -t < test_employees_md5.sql
mysql> show tables;
+----------------------+
| Tables_in_employees  |
+----------------------+
| current_dept_emp     |
| departments          |
| dept_emp             |
| dept_emp_latest_date |
| dept_manager         |
| employees            |
| salaries             |
| titles               |
+----------------------+
8 rows in set (0.00 sec)