[英]Help to Understand and fix mysql error message Integrity violation: 1452
[英]Mysql integrity error 1452 on insert
select * from memory_games_game;
給我下表:
select * from memory_games_game_state;
給我下表:
我有一個存儲過程如下:
delimiter //
CREATE PROCEDURE get_game_by_user_id(
p_user_id int, p_game_id int
)
BEGIN
insert into memory_games_game_state(user_id, game_id, level, progress)
SELECT 24 as user_id,
game.game_type as game_id,
1 as level,
0 as progress
FROM memory_games_game game
left outer join memory_games_game_state gameState on
game.game_type=gameState.game_id and
gameState.user_id=24
where game.level=1 and gameState.user_id is null;
if p_game_id = -1 then
SELECT gameState.level, game_type, `current_date`
FROM memory_games_game game join memory_games_game_state gameState on
game.game_type=gameState.game_id and
gameState.user_id=24 and
game.level=gameState.level;
else
SELECT gameState.level, game_type, `current_date`
FROM memory_games_game game join memory_games_game_state gameState on
game.game_type=gameState.game_id and
gameState.user_id=p_user_id and
game.level=gameState.level
WHERE game_type=12;
end if;
END
//
第一個插入將記錄插入memory_games_game_state
表。
這個插入對於game_id從8到11是成功的,但是對於12有以下錯誤它失敗:
我可以插入表中的記錄memory_games_game
為game_type 12這是什么,但game_id另一個表即memory_games_game_state
出了什么問題?
更新:
我的django型號:
class Game(models.Model):
#Field for storing game type
GAME_TYPE_CHOICES = (
(8, 'Simon Game'),
(9, 'Pinpoint reaction'),
(10, 'Loslassen'),
(11, 'Word pair'),
(12, 'Wortschatz')
)
game_type = models.IntegerField(choices=GAME_TYPE_CHOICES)
level = models.IntegerField(default='1')
#This helps to print in admin interface
def __str__(self):
return u"%s level %s" % (self.get_game_type_display(), self.level)
class Game_state(models.Model):
game = models.ForeignKey(Game, blank=True, null=True)
user = models.ForeignKey(User, blank=True, null=True)
level = models.IntegerField(default='1')
progress = models.IntegerField(default='0')
current_date = models.DateField(auto_now=True)
class Game_state_ui_model(models.Model):
GAME_TYPE_CHOICES = (
(8, 'Simon Game'),
(9, 'Pinpoint reaction'),
(10, 'Loslassen'),
(11, 'Word pair'),
(12, 'Wortschatz')
)
game_type = models.IntegerField(choices=GAME_TYPE_CHOICES)
level = models.IntegerField()
user_id = models.IntegerField(default='0')
current_date = models.DateField(auto_now=True)
# static method to fetch games for a paricular user
@staticmethod
def fetch_games(user_id, game_id):
print("Fetching games in model")
# create a cursor
cur = connection.cursor()
# execute the stored procedure passing in
# search_string as a parameter
cur.callproc('get_game_by_user_id', [user_id, game_id,])
# grab the results
results = cur.fetchall()
cur.close()
Game_state_list=[]
for row in results:
print("Get game", row)
Gs = Game_state_ui_model()
Gs.level=row[0]
Gs.game_type=row[1]
Gs.current_date=row[2]
Game_state_list.append(Gs)
return Game_state_list
正如錯誤所述,game_id引用memory_games_game.id; NOT memory_games_game.game_type。
認為“game_type 12只是另一個表中的game_id,即memory_games_game_state”是不正確的。
在memory_games_game中需要一行,id = 12。
我刪除了所有表並再次進行遷移,這在某種程度上解決了問題。 我沒有改變任何其他東西。
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