The requirement for a final ``++ELSE++`` clause is defensive programming. The clause should either take appropriate action, or contain a suitable comment as to why no action is taken. == Noncompliant Code Example ---- SELECT CASE category WHEN 'A' THEN 21 WHEN 'B' THEN 33 END shipping_cost FROM product ---- == Compliant Solution ---- SELECT CASE category WHEN 'A' THEN 21 WHEN 'B' THEN 33 ELSE 42 END shipping_cost FROM product ---- include::../see.adoc[] ifdef::env-github,rspecator-view[] ''' == Implementation Specification (visible only on this page) include::message.adoc[] ''' == Comments And Links (visible only on this page) include::../comments-and-links.adoc[] endif::env-github,rspecator-view[]