revoke_statement 

<revoke_statement> ::=
  REVOKE <priv_spec>,... FROM <grantee>,... [<cascade_option>]
| REVOKE <schema_priv_spec> FROM <grantee>,...
| REVOKE EXECUTE ON <dbproc_name> FROM <grantee>,...
| REVOKE EXECUTE ON <dbfunction_name> FROM <grantee>,...
| REVOKE SELECT ON <sequence_name> FROM <grantee>,... [<cascade_option>]