Tag: hierarchical data

Traverse Hierarchy with SQL++ User-defined functions (UDFs)

User-defined functions (UDFs) are a feature that exist in most RDBMS. Whether it is Oracle PL/SQL (Procedural Language for SQL), SQL Server T-SQL (Transact-SQL), PL/pgSQL (Procedural Language/PostgreSQL), or other variants, all these languages have the general characteristics of providing a...