[almighty] Analyzing Postgres Errors

[Thomas Mäder]

Hi folks,

Looking for the general opinion here:

As I was writing some gorm db code, I noticed that we could profit from 
analyzing the error returned by db calls. In this particular case, 
postgres returns "unique_violation" when trying to create a second 
project with the same name. In consequence, I could return 
"BadParameter" instead of just "internal error". Unfortunately, these 
structured errors are entirely specific to postgres. We'd have to cast 
down to a postgres error struct to get the info.

Do you think it would be generally a good idea to do this in our db 
access code?

/Thomas