Question

I’ve exported my MySQL database to a .txt/.sql file (link) and want to use this to rebuilt the database on other computers. While running the script in HeidiSQL works perfectly fine, I want to make sure all the tables exist and are correct before starting my application.

I could copy paste the built code into my Python code, but the export is a direct representation of my database and shouldn’t contain any errors, whereas copy-pasting… So instead I tried parsing the file, but my parsing skills leave a lot to be desired.

Here’s a snippet of the code:

CREATE TABLE IF NOT EXISTS `data` (
  `dataid` int(10) unsigned NOT NULL AUTO_INCREMENT,
  `measurementid` int(10) unsigned NOT NULL DEFAULT '0',
  `frame` int(10) unsigned NOT NULL,
  `sensor_row` int(10) unsigned NOT NULL,
  `sensor_col` int(10) unsigned NOT NULL,
  `value` float unsigned NOT NULL,
  PRIMARY KEY (`dataid`),
  UNIQUE KEY `measurementid_frame_sensor_row_sensor_col` (`measurementid`,`frame`,`sensor_row`,`sensor_col`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1;

So assuming the database data is already created, I’m looking for a way to parse the built code and create all the required tables if they don’t exist or alter them if they’ve changed.

Any suggestions on how to approach this?

Answer 1

You can just execute the sql from the file fully and directly via a python database adapter:

import MySQLdb
sql_dump = open('builtcode.sql', 'r').read()

conn = MySQLdb.connect(db='soans', passwd='*****')
cur = conn.cursor()

cur.execute(sql_dump)

cur.connection.close()

Gives:

mysql> show tables;
+-----------------+
| Tables_in_soans |
+-----------------+
| anamnesis_main  |
| averagecontact  |