comment rejoindre (ou ajouter) 4 champs de la même table dans 1 champ dans MS Access

Question

Je le tableau suivant:

Source Plate1 Plate2 Plate3 Plate4 

que je veux transformer ce tableau:

Source Plate1 
Source plate2 
source Plate3 
source Plate4 

donc en ajoutant toutes les données des 4 champs Plate en 1 colonne

Comment faire cela en ms acces?

grâce

Answer 1

Vous pouvez utiliser une requête Union, par exemple:

INSERT INTO NewTable (Source, Plate) 
SELECT Source, Plate FROM 
    (SELECT Source, Plate1 As Plate FROM Table 
    UNION ALL 
    SELECT Source, Plate2 As Plate FROM Table 
    UNION ALL 
    SELECT Source, Plate3 As Plate FROM Table 
    UNION ALL 
    SELECT Source, Plate4 As Plate FROM Table) As t 

EDIT: la partie de l'Union elle-même:

SELECT Source, Plate1 As Plate FROM Table 
    UNION ALL 
    SELECT Source, Plate2 As Plate FROM Table 
    UNION ALL 
    SELECT Source, Plate3 As Plate FROM Table 
    UNION ALL 
    SELECT Source, Plate4 As Plate FROM Table 

Ou

SELECT Source, Plate FROM 
    (SELECT Source, Plate1 As Plate FROM Table 
    UNION ALL 
    SELECT Source, Plate2 As Plate FROM Table 
    UNION ALL 
    SELECT Source, Plate3 As Plate FROM Table 
    UNION ALL 
    SELECT Source, Plate4 As Plate FROM Table) As s