Format 4: object-reference relation condition
1
1 SELF
1 NULL
1 NULLS
2 ? IS
2 ? NOT
1 EQUAL? TO
1 =
1
1 SELF
1 NULL
1 NULLS
Format 4: object-reference relation condition
1
1 SELF
1 NULL
1 NULLS
2 ? IS
2 ? NOT
1 EQUAL? TO
1 =
1
1 SELF
1 NULL
1 NULLS