Named Sequence Privileges
A named sequence can require up to three sets of privileges:
Create Privileges
To create a sequence, a user must have CREATE privileges on a schema that contains the sequence.
Usage Privileges
Only the sequence creator/owner and superusers can initially access a new sequence. Other users must be granted the following privileges by a superuser or the sequence owner:
- SELECT privilege on the sequence.
- USAGE privilege on the schema that contains the sequence.
These privileges enable users to invoke functions CURRVAL and NEXTVAL on a sequence, either directly on the sequence itself, or implicitly through a table that references the sequence.
Management Privileges
Vertica provides the following SQL statements to manage partitions. Each requires its own set of privileges:
| SQL Statement | Required Privileges |
|---|---|
DROP SEQUENCE
|
Sequence owner or schema owner |
ALTER SEQUENCE…RENAME TO
|
Sequence owner with USAGE and CREATE privileges on the schema of the sequence to rename. |
ALTER SEQUENCE…SET SCHEMA
|
Sequence owner with USAGE privilege on the current schema, and CREATE privilege on the destination schema. |
| ALTER SEQUENCE…OWNER TO | Current sequence owner. |
For details on granting and revoking sequence privileges, see GRANT (Sequence) and REVOKE (Sequence) in the SQL Reference Manual.