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Witam,
jeśli mamy w tabeli trzy wiersze i pole parent_id ma wartości 1, 2, 2 to możemy policzyć ilość unikalnych parent_id tak

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SELECT DISTINCT parent_id FROM TABLE
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a jak to zrobić z count() ?


Potrzebne mi to do widoku

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CREATE VIEW `db_core_`.`f_v_grupy` AS SELECT
              g.*,
              count(f.id_f) AS ile_for,
              count(c.id_k) AS ile_kat,
              count(t.id_t) AS ile_tem,
              count(r.id_o) AS ile_odp
            FROM f_t_groups AS g
            LEFT JOIN f_t_forums AS f ON f.id_g = g.id_g
            LEFT JOIN f_t_categories AS c ON f.id_f = c.id_f
            LEFT JOIN f_t_topics AS t ON c.id_k = t.id_k
            LEFT JOIN f_t_replies AS r ON t.id_t = r.id_t
            GROUP BY
              id_g
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obecna wersja zlicza błędnie...

Ten post edytował jastu 24.08.2007, 12:42:47