v.20.4Bug Fix

Fix Parser Recursion Depth Limit Issue in ClickHouse

Fix the issue with limiting maximum recursion depth in parser in certain cases. This fixes #10283 This fix may introduce minor incompatibility: long and deep queries via clickhouse-client may refuse to work, and you should adjust settings max_query_size and max_parser_depth accordingly. #10295 (alexey-milovidov)