Control Panel » Primary Settings
Logging
Select "Log mysql errors"
Enter a path to save to.
It can be anywhere you want to save them but you enter a Absolute PATH . For a hint just check Absolute PATH to Main Directory: in the path settings.
click on the "click to test directory" this will write a small test file to the location and tell you if the location passed.
Then when you enter the control panel in the future there will be a indicator that you have a error log.
Or you can goto Control Panel » Logs » View SQL Errors
