[fifilura]

SQL is popular because it can be run on a map/reduce backend. So once you have written your code it can run on any number of machines.

[threeseed]

a) SQL is not that popular on map/reduce backends. Most people are doing it in code.

b) Only basic SQL works on any database and even then there are major differences in how they treat things like nulls, type coercion etc.

[fifilura]

BigQuery? Athena/Redshift?