| Autor | Zpráva | ||
|---|---|---|---|
| zis Profil * |
#1 · Zasláno: 2. 12. 2011, 15:54:56
Zdravim,
mam trigger v mysql DELIMITER $$ CREATE TRIGGER squadonmatchdremove_trg BEFORE DELETE ON squadonmatch FOR EACH ROW BEGIN DELETE FROM `action` a WHERE a.goal_id=(SELECT * FROM goal WHERE goal.squadonmatch_id=OLD.id); DELETE FROM `action` a WHERE a.card_id=(SELECT * FROM card WHERE card.squadonmatch_id=OLD.id); DELETE FROM card WHERE card.squadonmatch_id = OLD.id; DELETE FROM goal WHERE goal.squadonmatch_id = OLD.id; DELETE FROM mistake WHERE mistake.squadonmatch_id = OLD.id; END; DELIMITER ; V podstate smazanim radku v tabulce squadonmatch, mazu zaznamy v tabulkach action, card, goal, mistake Tabulka goal, card, mistake ma cizi klic na squadonmatch a tabulka action na card nebo goal. Vytvorim trigger a spustim dotaz na smazani DELETE FROM squadonmatch WHERE id=xx Ale napise to chybu 1451 - Cannot delete or update a parent row: a foreign key constraint fails `goal` Diky za napady |
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Časová prodleva: 12 let
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