The following table illustrates the OR logic used in evaluating search conditions.
| x FALSE | x UNKNOWN | x TRUE | |
| y FALSE | FALSE | UNKNOWN | TRUE |
| y UNKNOWN | UNKNOWN | UNKNOWN | TRUE |
| y TRUE | TRUE | TRUE | TRUE |
The following table illustrates the OR logic used in evaluating search conditions.
| x FALSE | x UNKNOWN | x TRUE | |
| y FALSE | FALSE | UNKNOWN | TRUE |
| y UNKNOWN | UNKNOWN | UNKNOWN | TRUE |
| y TRUE | TRUE | TRUE | TRUE |