postgres schema needs updating

I'm getting an error from nova-compute (cactus) running against a postgres db:

2011-04-13 14:35:12,073 AUDIT nova [-] Starting compute node (version 2011.2-workspace:tarmac-20110412221228-m3on9aiaj4eqhx8i)
2011-04-13 14:35:12,215 DEBUG nova.utils [-] backend <module 'nova.db.sqlalchemy.api' from '/usr/lib/pymodules/python2.6/nova/db/sqlalchemy/api.pyc'> from (pid=28546) __get_backend /usr/lib/pymodules/python2.6/nova/utils.py:427
2011-04-13 14:35:12,305 CRITICAL nova [-] (ProgrammingError) operator does not exist: character varying = integer
LINE 2: ...AS instance_types_1 ON instances.instance_type_id = instance...
                                                             ^
HINT: No operator matches the given name and argument type(s). You might need to add explicit type casts.
 'SELECT instances.created_at AS instances_created_at, instances.updated_at AS instances_updated_at, instances.deleted_at AS instances_deleted_at, instances.deleted AS instances_deleted, instances.id AS instances_id, instances.admin_pass AS instances_admin_pass, instances.user_id AS instances_user_id, instances.project_id AS instances_project_id, instances.image_id AS instances_image_id, instances.kernel_id AS instances_kernel_id, instances.ramdisk_id AS instances_ramdisk_id, instances.launch_index AS instances_launch_index, instances.key_name AS instances_key_name, instances.key_data AS instances_key_data, instances.state AS instances_state, instances.state_description AS instances_state_description, instances.memory_mb AS instances_memory_mb, instances.vcpus AS instances_vcpus, instances.local_gb AS instances_local_gb, instances.hostname AS instances_hostname, instances.host AS instances_host, instances.instance_type_id AS instances_instance_type_id, instances.user_data AS instances_user_data, instances.reservation_id AS instances_reservation_id, instances.mac_address AS instances_mac_address, instances.scheduled_at AS instances_scheduled_at, instances.launched_at AS instances_launched_at, instances.terminated_at AS instances_terminated_at, instances.availability_zone AS instances_availability_zone, instances.display_name AS instances_display_name, instances.display_description AS instances_display_description, instances.launched_on AS instances_launched_on, instances.locked AS instances_locked, instances.os_type AS instances_os_type, networks_1.created_at AS networks_1_created_at, networks_1.updated_at AS networks_1_updated_at, networks_1.deleted_at AS networks_1_deleted_at, networks_1.deleted AS networks_1_deleted, networks_1.id AS networks_1_id, networks_1.label AS networks_1_label, networks_1.injected AS networks_1_injected, networks_1.cidr AS networks_1_cidr, networks_1.cidr_v6 AS networks_1_cidr_v6, networks_1.gateway_v6 AS networks_1_gateway_v6, networks_1.netmask_v6 AS networks_1_netmask_v6, networks_1.netmask AS networks_1_netmask, networks_1.bridge AS networks_1_bridge, networks_1.gateway AS networks_1_gateway, networks_1.broadcast AS networks_1_broadcast, networks_1.dns AS networks_1_dns, networks_1.vlan AS networks_1_vlan, networks_1.vpn_public_address AS networks_1_vpn_public_address, networks_1.vpn_public_port AS networks_1_vpn_public_port, networks_1.vpn_private_address AS networks_1_vpn_private_address, networks_1.dhcp_start AS networks_1_dhcp_start, networks_1.project_id AS networks_1_project_id, networks_1.host AS networks_1_host, fixed_ips_1.created_at AS fixed_ips_1_created_at, fixed_ips_1.updated_at AS fixed_ips_1_updated_at, fixed_ips_1.deleted_at AS fixed_ips_1_deleted_at, fixed_ips_1.deleted AS fixed_ips_1_deleted, fixed_ips_1.id AS fixed_ips_1_id, fixed_ips_1.address AS fixed_ips_1_address, fixed_ips_1.network_id AS fixed_ips_1_network_id, fixed_ips_1.instance_id AS fixed_ips_1_instance_id, fixed_ips_1.allocated AS fixed_ips_1_allocated, fixed_ips_1.leased AS fixed_ips_1_leased, fixed_ips_1.reserved AS fixed_ips_1_reserved, floating_ips_1.created_at AS floating_ips_1_created_at, floating_ips_1.updated_at AS floating_ips_1_updated_at, floating_ips_1.deleted_at AS floating_ips_1_deleted_at, floating_ips_1.deleted AS floating_ips_1_deleted, floating_ips_1.id AS floating_ips_1_id, floating_ips_1.address AS floating_ips_1_address, floating_ips_1.fixed_ip_id AS floating_ips_1_fixed_ip_id, floating_ips_1.project_id AS floating_ips_1_project_id, floating_ips_1.host AS floating_ips_1_host, security_groups_1.created_at AS security_groups_1_created_at, security_groups_1.updated_at AS security_groups_1_updated_at, security_groups_1.deleted_at AS security_groups_1_deleted_at, security_groups_1.deleted AS security_groups_1_deleted, security_groups_1.id AS security_groups_1_id, security_groups_1.name AS security_groups_1_name, security_groups_1.description AS security_groups_1_description, security_groups_1.user_id AS security_groups_1_user_id, security_groups_1.project_id AS security_groups_1_project_id, instance_types_1.created_at AS instance_types_1_created_at, instance_types_1.updated_at AS instance_types_1_updated_at, instance_types_1.deleted_at AS instance_types_1_deleted_at, instance_types_1.deleted AS instance_types_1_deleted, instance_types_1.id AS instance_types_1_id, instance_types_1.name AS instance_types_1_name, instance_types_1.memory_mb AS instance_types_1_memory_mb, instance_types_1.vcpus AS instance_types_1_vcpus, instance_types_1.local_gb AS instance_types_1_local_gb, instance_types_1.flavorid AS instance_types_1_flavorid, instance_types_1.swap AS instance_types_1_swap, instance_types_1.rxtx_quota AS instance_types_1_rxtx_quota, instance_types_1.rxtx_cap AS instance_types_1_rxtx_cap \nFROM instances LEFT OUTER JOIN fixed_ips AS fixed_ips_1 ON fixed_ips_1.instance_id = instances.id AND fixed_ips_1.deleted = %(deleted_1)s LEFT OUTER JOIN networks AS networks_1 ON networks_1.id = fixed_ips_1.network_id LEFT OUTER JOIN floating_ips AS floating_ips_1 ON floating_ips_1.fixed_ip_id = fixed_ips_1.id AND floating_ips_1.deleted = %(deleted_2)s LEFT OUTER JOIN security_group_instance_association AS security_group_instance_association_1 ON security_group_instance_association_1.instance_id = instances.id AND instances.deleted = %(deleted_3)s LEFT OUTER JOIN security_groups AS security_groups_1 ON security_groups_1.id = security_group_instance_association_1.security_group_id AND security_group_instance_association_1.deleted = %(deleted_4)s AND security_groups_1.deleted = %(deleted_5)s LEFT OUTER JOIN instance_types AS instance_types_1 ON instances.instance_type_id = instance_types_1.id \nWHERE instances.host = %(host_1)s AND instances.deleted = %(deleted_6)s' {'host_1': 'hera', 'deleted_6': False, 'deleted_5': False, 'deleted_4': False, 'deleted_3': False, 'deleted_2': False, 'deleted_1': False}
(nova): TRACE: Traceback (most recent call last):
(nova): TRACE: File "/usr/bin/nova-compute", line 48, in <module>
(nova): TRACE: service.serve()
(nova): TRACE: File "/usr/lib/pymodules/python2.6/nova/service.py", line 290, in serve
(nova): TRACE: x.start()
(nova): TRACE: File "/usr/lib/pymodules/python2.6/nova/service.py", line 84, in start
(nova): TRACE: self.manager.init_host()
(nova): TRACE: File "/usr/lib/pymodules/python2.6/nova/compute/manager.py", line 142, in init_host
(nova): TRACE: self.driver.init_host(host=self.host)
(nova): TRACE: File "/usr/lib/pymodules/python2.6/nova/virt/libvirt_conn.py", line 225, in init_host
(nova): TRACE: for instance in db.instance_get_all_by_host(ctxt, host):
(nova): TRACE: File "/usr/lib/pymodules/python2.6/nova/db/api.py", line 431, in instance_get_all_by_host
(nova): TRACE: return IMPL.instance_get_all_by_host(context, host)
(nova): TRACE: File "/usr/lib/pymodules/python2.6/nova/db/sqlalchemy/api.py", line 98, in wrapper
(nova): TRACE: return f(*args, **kwargs)
(nova): TRACE: File "/usr/lib/pymodules/python2.6/nova/db/sqlalchemy/api.py", line 891, in instance_get_all_by_host
(nova): TRACE: filter_by(deleted=can_read_deleted(context)).\
(nova): TRACE: File "/usr/lib/pymodules/python2.6/sqlalchemy/orm/query.py", line 1453, in all
(nova): TRACE: return list(self)
(nova): TRACE: File "/usr/lib/pymodules/python2.6/sqlalchemy/orm/query.py", line 1565, in __iter__
(nova): TRACE: return self._execute_and_instances(context)
(nova): TRACE: File "/usr/lib/pymodules/python2.6/sqlalchemy/orm/query.py", line 1570, in _execute_and_instances
(nova): TRACE: mapper=self._mapper_zero_or_none())
(nova): TRACE: File "/usr/lib/pymodules/python2.6/sqlalchemy/orm/session.py", line 735, in execute
(nova): TRACE: clause, params or {})
(nova): TRACE: File "/usr/lib/pymodules/python2.6/sqlalchemy/engine/base.py", line 1157, in execute
(nova): TRACE: params)
(nova): TRACE: File "/usr/lib/pymodules/python2.6/sqlalchemy/engine/base.py", line 1237, in _execute_clauseelement
(nova): TRACE: return self.__execute_context(context)
(nova): TRACE: File "/usr/lib/pymodules/python2.6/sqlalchemy/engine/base.py", line 1268, in __execute_context
(nova): TRACE: context.parameters[0], context=context)
(nova): TRACE: File "/usr/lib/pymodules/python2.6/sqlalchemy/engine/base.py", line 1367, in _cursor_execute
(nova): TRACE: context)
(nova): TRACE: File "/usr/lib/pymodules/python2.6/sqlalchemy/engine/base.py", line 1360, in _cursor_execute
(nova): TRACE: context)
(nova): TRACE: File "/usr/lib/pymodules/python2.6/sqlalchemy/engine/default.py", line 288, in do_execute
(nova): TRACE: cursor.execute(statement, parameters)
(nova): TRACE: ProgrammingError: (ProgrammingError) operator does not exist: character varying = integer
(nova): TRACE: LINE 2: ...AS instance_types_1 ON instances.instance_type_id = instance...
(nova): TRACE: ^
(nova): TRACE: HINT: No operator matches the given name and argument type(s). You might need to add explicit type casts.
(nova): TRACE: 'SELECT instances.created_at AS instances_created_at, instances.updated_at AS instances_updated_at, instances.deleted_at AS instances_deleted_at, instances.deleted AS instances_deleted, instances.id AS instances_id, instances.admin_pass AS instances_admin_pass, instances.user_id AS instances_user_id, instances.project_id AS instances_project_id, instances.image_id AS instances_image_id, instances.kernel_id AS instances_kernel_id, instances.ramdisk_id AS instances_ramdisk_id, instances.launch_index AS instances_launch_index, instances.key_name AS instances_key_name, instances.key_data AS instances_key_data, instances.state AS instances_state, instances.state_description AS instances_state_description, instances.memory_mb AS instances_memory_mb, instances.vcpus AS instances_vcpus, instances.local_gb AS instances_local_gb, instances.hostname AS instances_hostname, instances.host AS instances_host, instances.instance_type_id AS instances_instance_type_id, instances.user_data AS instances_user_data, instances.reservation_id AS instances_reservation_id, instances.mac_address AS instances_mac_address, instances.scheduled_at AS instances_scheduled_at, instances.launched_at AS instances_launched_at, instances.terminated_at AS instances_terminated_at, instances.availability_zone AS instances_availability_zone, instances.display_name AS instances_display_name, instances.display_description AS instances_display_description, instances.launched_on AS instances_launched_on, instances.locked AS instances_locked, instances.os_type AS instances_os_type, networks_1.created_at AS networks_1_created_at, networks_1.updated_at AS networks_1_updated_at, networks_1.deleted_at AS networks_1_deleted_at, networks_1.deleted AS networks_1_deleted, networks_1.id AS networks_1_id, networks_1.label AS networks_1_label, networks_1.injected AS networks_1_injected, networks_1.cidr AS networks_1_cidr, networks_1.cidr_v6 AS networks_1_cidr_v6, networks_1.gateway_v6 AS networks_1_gateway_v6, networks_1.netmask_v6 AS networks_1_netmask_v6, networks_1.netmask AS networks_1_netmask, networks_1.bridge AS networks_1_bridge, networks_1.gateway AS networks_1_gateway, networks_1.broadcast AS networks_1_broadcast, networks_1.dns AS networks_1_dns, networks_1.vlan AS networks_1_vlan, networks_1.vpn_public_address AS networks_1_vpn_public_address, networks_1.vpn_public_port AS networks_1_vpn_public_port, networks_1.vpn_private_address AS networks_1_vpn_private_address, networks_1.dhcp_start AS networks_1_dhcp_start, networks_1.project_id AS networks_1_project_id, networks_1.host AS networks_1_host, fixed_ips_1.created_at AS fixed_ips_1_created_at, fixed_ips_1.updated_at AS fixed_ips_1_updated_at, fixed_ips_1.deleted_at AS fixed_ips_1_deleted_at, fixed_ips_1.deleted AS fixed_ips_1_deleted, fixed_ips_1.id AS fixed_ips_1_id, fixed_ips_1.address AS fixed_ips_1_address, fixed_ips_1.network_id AS fixed_ips_1_network_id, fixed_ips_1.instance_id AS fixed_ips_1_instance_id, fixed_ips_1.allocated AS fixed_ips_1_allocated, fixed_ips_1.leased AS fixed_ips_1_leased, fixed_ips_1.reserved AS fixed_ips_1_reserved, floating_ips_1.created_at AS floating_ips_1_created_at, floating_ips_1.updated_at AS floating_ips_1_updated_at, floating_ips_1.deleted_at AS floating_ips_1_deleted_at, floating_ips_1.deleted AS floating_ips_1_deleted, floating_ips_1.id AS floating_ips_1_id, floating_ips_1.address AS floating_ips_1_address, floating_ips_1.fixed_ip_id AS floating_ips_1_fixed_ip_id, floating_ips_1.project_id AS floating_ips_1_project_id, floating_ips_1.host AS floating_ips_1_host, security_groups_1.created_at AS security_groups_1_created_at, security_groups_1.updated_at AS security_groups_1_updated_at, security_groups_1.deleted_at AS security_groups_1_deleted_at, security_groups_1.deleted AS security_groups_1_deleted, security_groups_1.id AS security_groups_1_id, security_groups_1.name AS security_groups_1_name, security_groups_1.description AS security_groups_1_description, security_groups_1.user_id AS security_groups_1_user_id, security_groups_1.project_id AS security_groups_1_project_id, instance_types_1.created_at AS instance_types_1_created_at, instance_types_1.updated_at AS instance_types_1_updated_at, instance_types_1.deleted_at AS instance_types_1_deleted_at, instance_types_1.deleted AS instance_types_1_deleted, instance_types_1.id AS instance_types_1_id, instance_types_1.name AS instance_types_1_name, instance_types_1.memory_mb AS instance_types_1_memory_mb, instance_types_1.vcpus AS instance_types_1_vcpus, instance_types_1.local_gb AS instance_types_1_local_gb, instance_types_1.flavorid AS instance_types_1_flavorid, instance_types_1.swap AS instance_types_1_swap, instance_types_1.rxtx_quota AS instance_types_1_rxtx_quota, instance_types_1.rxtx_cap AS instance_types_1_rxtx_cap \nFROM instances LEFT OUTER JOIN fixed_ips AS fixed_ips_1 ON fixed_ips_1.instance_id = instances.id AND fixed_ips_1.deleted = %(deleted_1)s LEFT OUTER JOIN networks AS networks_1 ON networks_1.id = fixed_ips_1.network_id LEFT OUTER JOIN floating_ips AS floating_ips_1 ON floating_ips_1.fixed_ip_id = fixed_ips_1.id AND floating_ips_1.deleted = %(deleted_2)s LEFT OUTER JOIN security_group_instance_association AS security_group_instance_association_1 ON security_group_instance_association_1.instance_id = instances.id AND instances.deleted = %(deleted_3)s LEFT OUTER JOIN security_groups AS security_groups_1 ON security_groups_1.id = security_group_instance_association_1.security_group_id AND security_group_instance_association_1.deleted = %(deleted_4)s AND security_groups_1.deleted = %(deleted_5)s LEFT OUTER JOIN instance_types AS instance_types_1 ON instances.instance_type_id = instance_types_1.id \nWHERE instances.host = %(host_1)s AND instances.deleted = %(deleted_6)s' {'host_1': 'hera', 'deleted_6': False, 'deleted_5': False, 'deleted_4': False, 'deleted_3': False, 'deleted_2': False, 'deleted_1': False}
(nova): TRACE:

The following SQL fixes this bug:

alter table instances alter instance_type_id type integer using cast(instance_type_id as integer);