Syntax
DROP SEQUENCE [ schemaName. ] SQL92Identifier RESTRICT
The sequence name is composed of an optional schemaName and a
SQL92Identifier. If a schemaName is not provided, the current
schema is the default schema. If a qualified sequence name is specified, the
schema name cannot begin with SYS.
The RESTRICT keyword is required. If a trigger or view references the
sequence generator, Derby
throws an exception.
Dropping a sequence generator implicitly drops all USAGE privileges that
reference it.