CASE Statement vs CASE Expression

CASE Statement

CASE statement gives you a clear way to handle conditional logic within PL/SQL blocks. It is a conditional control statement that allows you to execute different blocks of code based on the specified conditions. It is particularly useful when dealing with multiple conditions and provides a more readable and maintainable alternative to nested IF-ELSE statements....

Types of CASE Statement

There are two primary types of CASE statements in PL/SQL: Simple CASE and Searched CASE....

CASE Statement vs CASE Expression

CASE Statement CASE Expression CASE Statement is used to handle flow control within procedural code and it determines which code block to execute based on specified conditions. CASE Expression in SQL is used for transforming or selecting values within a query and returning different results based on conditions. It is limited to PL/SQL blocks such as procedures, functions, and blocks. It is primarily used within SQL statements like SELECT, WHERE, and ORDER BY clauses. It supports both Simple CASE and Searched CASE. It only supports Searched CASE. It supports ELSE clause for defining a default action. It also supports ELSE clause for defining a default action....

Conclusion

Pl/SQL is a Procedural Language that is used to write program blocks, procedures, functions, cursors, triggers for databases. It provides a CASE statement feature that is used to handle conditional logic within PL/SQL blocks. CASE statement provides more clear and readable alternative to nested IF-ELSE statements. By efficiently managing branching logic, the CASE statement enhances code clarity and maintainability in PL/SQL programming....