Language Usage / Control Structures / CASE ...
Avoid inverting boolean checks

from SonarQube

Boolean checks should not be inverted

It is needlessly complex to invert the result of a boolean comparison. The opposite comparison should be made instead.

Noncompliant Code Example

IF NOT x <> y THEN
  -- ...
END IF;

Compliant Solution

IF x = y THEN
  -- ...
END IF;