I want to log all SQL commands as an executable script file for use in performance testing. Currently there is a lot of information in the log that is generated that would not be executable. Below is an example of what I would want to see; which is just the SQL.
Example of log output:
Select a,b,c from calendar where a=12;
Select a,b,c from calendar where a=13;
Example:
1) I would take a snap shot of our production database.
2) I would then turn on SQL logging.
3) I would put the copy of the database onto a test server.
4) After a few days of logging the SQL commands I would copy the file to the test server.
5) I would then have a basic script that would display the start time, execute the postgres SQL log (pgsql –d database_name –f sql_log_file_name), and then display the end time.
Now I can test configuration changes and index modifications on real world data to see what impact the changes would have. I just keep reloading the database, change the configurations settings, and then execute the script again.
The key is that the SQL log be in a format that can be executed as a postgres SQL file.
How do I do this?
Thanks,
Lance Campbell
Project Manager/Software Architect
Web Services at Public Affairs
University of Illinois
217.333.0382
http://webservices.uiuc.edu
