Why am I getting this?
xdb=# alter table templates add constraint manager_uid_is_invalid check ((constraint_checker('manager',manager,null,null)) = 'OK') DEFERRABLE ;
ERROR: syntax error at or near "DEFERRABLE"
LINE 1: ...int_checker('manager',manager,null,null)) = 'OK') DEFERRABLE...
v8.3.4 on linux