Oracle prides itself on backwards compatibility. Code written for 12c/19c runs perfectly on 23c. The 7th edition covers 99% of the PL/SQL you will write in production.
: Detailed guides on conditional logic (IF, CASE) and iterative processing through various types of loops. oracle pl sql programming 7th edition pdf
: Covers the block structure of PL/SQL, including declarations, executable statements, and exception handling. Oracle prides itself on backwards compatibility
: Building robust exception-handling architectures. Oracle PL/SQL Programming, Sixth Edition oracle pl sql programming 7th edition pdf