jelis=> \d masters_teams
      Table "public.masters_teams"
     Column      |   Type   | Modifiers
-----------------+----------+-----------
 team_work_date  | date     | not null
 team_nbr        | team_nbr | not null
 master_initials | initials | not null
Indexes:
    "pk_masters_teams" PRIMARY KEY, btree (team_work_date, team_nbr, master_initials)
Foreign-key constraints:
    "fk_masters_teams_masters" FOREIGN KEY (master_initials) REFERENCES masters(master_initials) ON UPDATE RESTRICT ON DELETE RESTRICT

jelis=> SELECT * FROM masters_teams;
 team_work_date | team_nbr | master_initials
----------------+----------+-----------------
  2008 - 09 - 10      | TEAM # 1   | A. Jermalinskis
( 1  row)

jelis=> SELECT count(team_work_date) FROM Masters_Teams;
 count
-------
      1 
( 1  row)

jelis=> SELECT count(team_work_date) FROM Masters_Teams WHERE team_work_date = current_date;
 count
-------
      1 
( 1  row)

jelis=> SELECT count(team_work_date) FROM Masters_Teams WHERE team_work_date = current_date + '1 day'::interval;
 count
-------
      0 
( 1  row)

jelis=> SELECT count(team_work_date) FROM Masters_Teams WHERE team_work_date = current_date GROUP BY team_work_date;
 count
-------
      1 
( 1  row)

-- до этого момента все считалось вроде как надо
-- но вот следущий запрос ни чего не возвращает,
-- хотя по идее, должно быть 0

jelis=> SELECT count(team_work_date) FROM Masters_Teams WHERE team_work_date = current_date + '1 day'::interval GROUP BY team_work_date;
 count
-------
( 0  rows)