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This class can fill records of MySQL tables with test data.
It takes the SQL dump file of a MySQL database and parses it to extract the list of database tables.
The class executes SQL statements to insert records on the MySQL database tables.
The new record field values can be generated randomly or set to a constant value.
The number of records to insert, the range of characters to use in random data and the character set encoding are configurable parameters.
Fill MySQL database tables with test data by parsing the SQL schema file.
- Quickly populate database tables with row data for testing SQL data retrieval.
- Assist in testing complex database schema, before moving the database to a production environment.
- Check table field population with specified datatypes, potential data truncation, visual cues etc.
- Test database connection encoding and character encoding, and data insertion speeds.
Originally, I needed to populate a database containing 14 complex tables. Tools such as Spawner are useful for populating small tables, but in this case, specifying the datatypes for 300+ fields to initiate Spawner would have been insanity.
Instead, why not parse the SQL schema?
- The script expects the database schema to exist in MySQL (
mysql -u root -p < test.sql).
- All table names and column names in the MySQL schema require back-ticks.
- Unique keys must be removed from tables when using the option 'random_data' => FALSE
- The majority of MySQL datatypes are supported.
- Any foreign keys are disabled on data population.
- Random character generation is slow in PHP, and such slowness further depends on field length, number of fields, and the number of rows being generated.
- Multiple INSERTs are added in a single query, which is quite fast. Number of INSERTs per second will depend on MySQL configuration settings (the defaults are not optimised), datatype / length inserted, system load, operating system, hardware etc.
Ensure the database already exists in MySQL
e.g. for the test schema:
mysql -u root -p < test.sql
Adjust the array connection details and parameters in the file databasefiller_example.php
Then execute this file with PHP on the command-line:
or run the file through a web server e.g.
Database Filler is released under the GPL v.3.
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