There are several properties of user-defined functions that determine the ability of the [!INCLUDE ssDEnoversion] to index the results of the function, either through indexes on computed columns that ...

-- region and nation. Take a look at the code below, but don’t run it. CREATE OR REPLACE FUNCTION get_customers_by_nation_region ( region_nation varchar ) RETURNS TABLE (customer_id number, first_name ...

User defined types (UDTs) enable tables and records to be passed in and out of UDFs. UDTs also enable bulk conversion of JSON untyped objects to typed objects, particularly useful with web APIs.

With the continuous evolution of database technology, numerous databases and query analysis engines have begun to incorporate user-defined functions into SQL. These functions enable users to express ...