> if you want to know what a SQL query is going to do in the black box of your query engine, you might try to parse the esoteric language of a query explainer.

> if you want to know what a SQL query is going to do in the black box of your query engine, you might try to parse the esoteric language of a query explainer. Possibly a side effect of nosql movement/proliferation that these basic things became esoteric. Like a vet care for dinosaurs :) The tooling around data pipelines, like debugging, profiling, lineage, etc was too a typical stuff of the ETL tools of yesteryear like Informatica for example.