Rajkumar Raghuwanshi <rajkumar.raghuwanshi@enterprisedb.com> writes:
> I have observed that even after dropping operator class, not able to drop
> schema containing it. below is a example.
You didn't read the error message closely:
> *postgres=# DROP SCHEMA sch_test;ERROR: cannot drop schema sch_test
> because other objects depend on itDETAIL: operator family
> sch_test.custom_opclass_test for access method hash depends on schema
> sch_testHINT: Use DROP ... CASCADE to drop the dependent objects too.*
The operator class is gone, but the operator family that contained it
still exists. CREATE OPERATOR CLASS will create a containing family
if you don't specify one, but DROP OPERATOR CLASS won't automatically
remove such a family. (If it did, it might destroy other operator
classes that had been added to that family later.)
Probably the easiest answer is to use DROP OPERATOR FAMILY instead.
regards, tom lane