The article explores unique features of PostgreSQL grammar, focusing on custom operators, precedence in compound selects, and various syntax nuances such as string continuation, quoted identifiers, and Unicode escapes. It highlights how these aspects can enhance functionality while also presenting challenges for implementation.

Databricks has introduced a new pipe syntax for SQL, simplifying the way users can write queries. This enhancement aims to streamline data manipulation and improve user experience by making the SQL syntax more intuitive and easier to use. Overall, the new feature is expected to enhance productivity and efficiency for SQL users on the Databricks platform.