"beautiful" sql is subjective. What does it mean? SQL that looks pretty to the eye (with proper indentation)? Or is it SQL that can run on dozens of different d

"beautiful" sql is subjective. What does it mean? SQL that looks pretty to the eye (with proper indentation)? Or is it SQL that can run on dozens of different database servers with no modifications? Or is it SQL that can be automatically generated so you don't have to spend any time thinking about it but that runs 5% slower than something you spent 1 hour on? I would probably go with the two last options.