Tag: Empty GROUP BY

The SQL standard knows a lesser known feature called GROUPING SETS. One particular side-effect of that feature is that we can group by "nothing" in SQL. E.g. when querying the Sakila database: SELECT count(*) FROM film GROUP BY () This will yield: count | ------| 1000 | What's the point, you're asking? Can't we just … Continue reading How to Group By “Nothing” in SQL →