Sonar - List Deprecated Functions

The list of deprecated functions for 12c is not complete.
SonarSource: https://rules.sonarsource.com/plsql/RSPEC-4421
Oracle: https://docs.oracle.com/apps/search/search.jsp?word=deprecated&product=e50529-01&book=SQLRF

Example Extract is deprecated:

SELECT warehouse_name,
EXTRACT(warehouse_spec, ‘/Warehouse/Docks’) “Number of Docks”
FROM warehouses
WHERE warehouse_spec IS NOT NULL
ORDER BY warehouse_name;

Indeed!
Ticket created to track that: SONARPLSQL-731

Thanks a lot for the feedback!