== Why is this an issue?

The requirement for a final ``++ELSE++`` clause is defensive programming. The ``++CASE++`` statement should always provide a value.

=== Noncompliant code example

[source,sql]
----
CASE grade -- Noncompliant, can raise a CASE_NOT_FOUND exception.
  WHEN 'A' THEN DBMS_OUTPUT.PUT_LINE('Excellent');
  WHEN 'B' THEN DBMS_OUTPUT.PUT_LINE('Very Good');
END CASE;
----

=== Compliant solution

[source,sql]
----
CASE grade
  WHEN 'A' THEN DBMS_OUTPUT.PUT_LINE('Excellent');
  WHEN 'B' THEN DBMS_OUTPUT.PUT_LINE('Very Good');
  ELSE DBMS_OUTPUT.PUT_LINE('No such grade');
END CASE;
----

include::../see.adoc[]

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== Implementation Specification
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include::../message.adoc[]

'''
== Comments And Links
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include::../comments-and-links.adoc[]

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