SQL functions are built-in routines in Oracle that perform operations on data and return a value. SQL functions allow you to transform or calculate values in your queries.

What versions are you using? Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production platform.platform: Windows-10-10.0.17763-SP0 sys.maxsize > 2**32: True platform.python_version ...

Key Features Migrate existing on-premises applications to the Oracle Cloud environment using data migration techniques Handle date and time values efficiently using Oracle database's available data ...

Most commercial SQL database systems support user-defined functions that can be used in WHERE clause filters, SELECT list items, or in sorting/grouping clauses. Often, user-defined functions are used ...