After making a clean installation of eZ Publish 4.6, in Postgres, and upgrading to eZ Publish 4.7 rc1 I get the following in the Database Consistency Check:

The database is not consistent with the distribution database.

To synchronize your database with the distribution setup, run the following SQL commands:

ALTER TABLE ONLY ezpending_actions ADD CONSTRAINT ezpending_actions_pkey PRIMARY KEY ( id );
ALTER TABLE ezx_ezpnet_module_branch ADD COLUMN branch_id integer;
ALTER TABLE ezx_ezpnet_module_branch ALTER branch_id SET DEFAULT 0 ;
ALTER TABLE ezx_ezpnet_module_branch ALTER branch_id SET NOT NULL ;

ALTER TABLE ezstarrating RENAME COLUMN rating_average TO rating_average_tmp;
ALTER TABLE ezstarrating ADD COLUMN rating_average real;
ALTER TABLE ezstarrating ALTER rating_average SET DEFAULT 0::real ;
ALTER TABLE ezstarrating ALTER rating_average SET NOT NULL ;
UPDATE ezstarrating SET rating_average=rating_average_tmp;
ALTER TABLE ezstarrating DROP COLUMN rating_average_tmp;

ALTER TABLE ezstarrating_data RENAME COLUMN rating TO rating_tmp;
ALTER TABLE ezstarrating_data ADD COLUMN rating real;
ALTER TABLE ezstarrating_data ALTER rating SET DEFAULT 0::real ;
ALTER TABLE ezstarrating_data ALTER rating SET NOT NULL ;
UPDATE ezstarrating_data SET rating=rating_tmp;
ALTER TABLE ezstarrating_data DROP COLUMN rating_tmp;

Steps to reproduce

1. Make a clean installation of Ez Publish 4.6
2. Register in Service Portal
3. Run Sync_Network cronjob
4. Run Monitor cronjob
5. Upgrade to eZ Publish 4.7 rc1
6. Run Sync_Network cronjob 
7. Run Monitor cronjob
8. Make a Database Consistency Check