SQL Errors tracking in Logs

[mushketer888]

It would be nice feauture.
To track sql errors in log.
For example i wanted to try opencart and have error:
Notice: Error: Unknown column 'p.rating' in 'field list'
Error No: 1054

I could not see this error or it is hard to catch/debug.
To make this feauture it is enough to add code to: system/library/db.php
public function query($sql) {
//here
return $this->db->query($sql);
}

[ghost]

They already appear in the error log.