test_db: mysql测试官方测试数据，从https://github.com/datacharmer/test_db.git完整复制的数据，完成时间2020-06-12

# test_db
A sample database with an integrated test suite, used to test your applications and database servers

This repository was migrated from [Launchpad](https://launchpad.net/test-db).

See usage in the [MySQL docs](https://dev.mysql.com/doc/employee/en/index.html)

## Where it comes from

The original data was created by Fusheng Wang and Carlo Zaniolo at 
Siemens Corporate Research. The data is in XML format.
http://timecenter.cs.aau.dk/software.htm

Giuseppe Maxia made the relational schema and Patrick Crews exported
the data in relational format.

The database contains about 300,000 employee records with 2.8 million 
salary entries. The export data is 167 MB, which is not huge, but
heavy enough to be non-trivial for testing.

The data was generated, and as such there are inconsistencies and subtle
problems. Rather than removing them, we decided to leave the contents
untouched, and use these issues as data cleaning exercises.

## Prerequisites

You need a MySQL database server (5.0+) and run the commands below through a 
user that has the following privileges:

SELECT, INSERT, UPDATE, DELETE, 
    CREATE, DROP, RELOAD, REFERENCES, 
    INDEX, ALTER, SHOW DATABASES, 
    CREATE TEMPORARY TABLES, 
    LOCK TABLES, EXECUTE, CREATE VIEW

## Installation:

1. Download the repository
2. Change directory to the repository

Then run

mysql < employees.sql

If you want to install with two large partitioned tables, run

mysql < employees_partitioned.sql

## Testing the installation

After installing, you can run one of the following

mysql -t < test_employees_md5.sql
    # OR
    mysql -t < test_employees_sha.sql

For example:

mysql  -t < test_employees_md5.sql
    +----------------------+
    | INFO                 |
    +----------------------+
    | TESTING INSTALLATION |
    +----------------------+
    +--------------+------------------+----------------------------------+
    | table_name   | expected_records | expected_crc                     |
    +--------------+------------------+----------------------------------+
    | employees    |           300024 | 4ec56ab5ba37218d187cf6ab09ce1aa1 |
    | departments  |                9 | d1af5e170d2d1591d776d5638d71fc5f |
    | dept_manager |               24 | 8720e2f0853ac9096b689c14664f847e |
    | dept_emp     |           331603 | ccf6fe516f990bdaa49713fc478701b7 |
    | titles       |           443308 | bfa016c472df68e70a03facafa1bc0a8 |
    | salaries     |          2844047 | fd220654e95aea1b169624ffe3fca934 |
    +--------------+------------------+----------------------------------+
    +--------------+------------------+----------------------------------+
    | table_name   | found_records    | found_crc                        |
    +--------------+------------------+----------------------------------+
    | employees    |           300024 | 4ec56ab5ba37218d187cf6ab09ce1aa1 |
    | departments  |                9 | d1af5e170d2d1591d776d5638d71fc5f |
    | dept_manager |               24 | 8720e2f0853ac9096b689c14664f847e |
    | dept_emp     |           331603 | ccf6fe516f990bdaa49713fc478701b7 |
    | titles       |           443308 | bfa016c472df68e70a03facafa1bc0a8 |
    | salaries     |          2844047 | fd220654e95aea1b169624ffe3fca934 |
    +--------------+------------------+----------------------------------+
    +--------------+---------------+-----------+
    | table_name   | records_match | crc_match |
    +--------------+---------------+-----------+
    | employees    | OK            | ok        |
    | departments  | OK            | ok        |
    | dept_manager | OK            | ok        |
    | dept_emp     | OK            | ok        |
    | titles       | OK            | ok        |
    | salaries     | OK            | ok        |
    +--------------+---------------+-----------+

## DISCLAIMER

To the best of my knowledge, this data is fabricated and
it does not correspond to real people. 
Any similarity to existing people is purely coincidental.

## LICENSE
This work is licensed under the 
Creative Commons Attribution-Share Alike 3.0 Unported License. 
To view a copy of this license, visit 
http://creativecommons.org/licenses/by-sa/3.0/ or send a letter to 
Creative Commons, 171 Second Street, Suite 300, San Francisco, 
California, 94105, USA.

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