text: ------------------------------------------------------------------
  --  SEQUENCE seq_account
  ------------------------------------------------------------------
  ALTER SEQUENCE "seq_account" MAXVALUE 2147483647;
  
  ------------------------------------------------------------------
  --  TABLE account
  ------------------------------------------------------------------
  ALTER TABLE "account"
  	ALTER COLUMN id TYPE integer,
  	ALTER COLUMN id SET NOT NULL;
  
  ------------------------------------------------------------------
  --  SEQUENCE seq_user
  ------------------------------------------------------------------
  ALTER SEQUENCE "seq_user" MAXVALUE 2147483647;
  
  ------------------------------------------------------------------
  --  TABLE user
  ------------------------------------------------------------------
  ALTER TABLE "user"
  	ALTER COLUMN id TYPE integer,
  	ALTER COLUMN id SET NOT NULL,
  	ALTER COLUMN account_id TYPE integer,
  	ALTER COLUMN account_id SET NOT NULL;
  
  ------------------------------------------------------------------
  --  SEQUENCE seq_character_position
  ------------------------------------------------------------------
  ALTER SEQUENCE "seq_character_position" MAXVALUE 2147483647;
  
  ------------------------------------------------------------------
  --  TABLE character_position
  ------------------------------------------------------------------
  ALTER TABLE "character_position"
  	ALTER COLUMN id TYPE integer,
  	ALTER COLUMN id SET NOT NULL;
  
  ------------------------------------------------------------------
  --  SEQUENCE seq_inventory
  ------------------------------------------------------------------
  ALTER SEQUENCE "seq_inventory" MAXVALUE 2147483647;
  
  ------------------------------------------------------------------
  --  TABLE inventory
  ------------------------------------------------------------------
  ALTER TABLE "inventory"
  	ALTER COLUMN id TYPE integer,
  	ALTER COLUMN id SET NOT NULL;
  
  ------------------------------------------------------------------
  --  SEQUENCE seq_character
  ------------------------------------------------------------------
  ALTER SEQUENCE "seq_character" MAXVALUE 2147483647;
  
  ------------------------------------------------------------------
  --  TABLE character
  ------------------------------------------------------------------
  ALTER TABLE "character"
  	ALTER COLUMN id TYPE integer,
  	ALTER COLUMN id SET NOT NULL,
  	ALTER COLUMN account_id TYPE integer,
  	ALTER COLUMN account_id SET NOT NULL,
  	ALTER COLUMN inventory_id TYPE integer,
  	ALTER COLUMN inventory_id SET NOT NULL,
  	ALTER COLUMN position_id TYPE integer,
  	ALTER COLUMN position_id SET NOT NULL;
  
  ------------------------------------------------------------------
  --  SEQUENCE seq_character
  ------------------------------------------------------------------
  ALTER SEQUENCE "seq_character_set" MAXVALUE 2147483647;
  
  ------------------------------------------------------------------
  --  TABLE character
  ------------------------------------------------------------------
  ALTER TABLE "character_set"
  	ALTER COLUMN id TYPE integer,
  	ALTER COLUMN id SET NOT NULL;