a2ad57062f
Document that `SELECT ... WHERE` clause currently accepts only conjunctions of relations joined by `AND` (`OR` is not supported), and that parentheses cannot be used to group boolean subexpressions. Add an unsupported query example and point readers to equivalent `IN` rewrites when applicable. This problem has been raised by one of our users in https://forum.scylladb.com/t/error-parsing-query-or-unsupported-statement/5299, and while one could infer answer to user's question by looking at the syntax of the `SELECT ... WHERE`, it's not immediately obvious to non-advanced users, so clarifying these concepts is justified. Fixes: SCYLLADB-1116 Closes scylladb/scylladb#29100