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Oracle 19c focuses heavily on stability, automation, and performance tuning. Instead of completely rewriting the SQL language, 19c introduces targeted enhancements that make writing complex queries simpler, safer, and drastically faster.
Oracle SQL 19c: Complete Guide to New Features and PDF Resources
Introduced in a basic form in 18c and fully matured in 19c, PTFs are a powerful type of table function. They accept a table as an input argument and return a table whose column structure is determined dynamically at runtime. This allows for highly dynamic data transformations and custom analytical processing within SQL.
The Database Development Guide describes various features available in the Oracle database and how to use them in real-time applications. For Java developers, the JDBC Developer's Guide describes how to use Oracle JDBC drivers to develop powerful Java database applications. For the Microsoft stack, the Data Provider for .NET Developer's Guide details provider-specific features and properties of ODP.NET, Microsoft's ADO.NET interface for Oracle. The Universal Connection Pool Developer's Guide also provides instructions for using Oracle’s Universal Connection Pooling API to manage and reuse database connections efficiently, reducing latency and overhead in application servers.
Oracle SQL 19c New Features: A Comprehensive Guide to Modern Database Development
: You can now use the DISTINCT keyword directly within the LISTAGG function to remove duplicate values from a concatenated list.
