Requête d'insertion

Besoin d'aide sur une requête qui permet d'ajouter une station sur la table distance avec tous les probabilité possible avec la table station.
Exemple sur l'image: Lorsque j'ajoute une station Y il ajoute automatiquement tous les cas possible ... la distance reste toujours 0,00
http://img15.hostingpics.net/pics/341224ddd.jpg

Merci d'avance

Un déclencheur semble tout indiqué.
Vos tables :

Code:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
create table dbo.station
(
    idstation int identity(1, 1) not null
  , station   char(1)            not null
  , nbr       int                not null
  , constraint pk_station primary key (idstation)
  , constraint ak_station unique      (station)
);
 
create table dbo.distance
(
    iddistance   int identity(1, 1) not null
  , ArretInitial char(1)            not null
  , ArretFinal   char(1)            not null
  , distance     decimal(5,2)       not null default 0
  , constraint pk_distance primary key (iddistance)
  , constraint fk_distance_station_initial
      foreign key (ArretInitial)
      references dbo.station (station)
  , constraint fk_distance_station_final
      foreign key (ArretFinal)
      references dbo.station (station)
);
 
insert into station (station, nbr) values ('F', 12);
insert into station (station, nbr) values ('R', 15);
insert into station (station, nbr) values ('J',  2);
insert into station (station, nbr) values ('S',  8);
insert into station (station, nbr) values ('H',  5);

Le trigger :

Code:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
create trigger dbo.tai_station on dbo.station
after insert as
begin
    INSERT INTO Distance (ArretInitial, ArretFinal)
    SELECT I.Station, I.Station
      FROM inserted as I
     UNION ALL      
    SELECT I.Station, S.Station
      FROM Station as S
           CROSS JOIN inserted as I
     WHERE I.Station <> S.Station
     UNION ALL
    SELECT S.Station, I.Station
      FROM Station as S
           CROSS JOIN inserted as I
     WHERE I.Station <> S.Station;
end;

Le test :

Code:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
select * from dbo.station;
 
idstation   station nbr
----------- ------- -----------
1           F       12
2           R       15
3           J       2
4           S       8
5           H       5
 
(5 row(s) affected)
 
select * from dbo.distance;
 
iddistance  ArretInitial ArretFinal distance
----------- ------------ ---------- --------
 
(0 row(s) affected)
 
insert into dbo.station (station, nbr) values ('Y', 50);
(11 row(s) affected)
(1 row(s) affected)
 
select * from dbo.station;
 
idstation   station nbr
----------- ------- -----------
1           F       12
2           R       15
3           J       2
4           S       8
5           H       5
6           Y       50
 
(6 row(s) affected)
 
select * from dbo.distance;
 
iddistance  ArretInitial ArretFinal distance
----------- ------------ ---------- --------
1           Y            Y          0.00
2           Y            F          0.00
3           Y            H          0.00
4           Y            J          0.00
5           Y            R          0.00
6           Y            S          0.00
7           F            Y          0.00
8           H            Y          0.00
9           J            Y          0.00
10          R            Y          0.00
11          S            Y          0.00
 
(11 row(s) affected)

Problème résolu

Merciiii beaucoup Waldar le code ça marche parfaitement :ccool:

:)