Performs the logical OR operation on the corresponding bits from the two input arguments.
This function takes two bit patterns of equal length and performs the logical OR operation on each pair of corresponding bits as follows.
| IF... | THEN the result is... |
|---|---|
| either of the bits from the input arguments is 1 | 1 |
| both of the bits from the input arguments are 0 | 0 |
| any of the input arguments is NULL | NULL |