possiamo scrivere una stored procedure con i parametri di input e quindi utilizzare quella stored procedure per ottenere un set di risultati dalla vista. vedi esempio sotto.
stored procedura è
CREATE PROCEDURE [dbo].[sp_Report_LoginSuccess] -- [sp_Report_LoginSuccess] '01/01/2010','01/30/2010'
@fromDate datetime,
@toDate datetime,
@RoleName varchar(50),
@Success int
as
If @RoleName != 'All'
Begin
If @Success!=2
Begin
--fetch based on true or false
Select * from vw_Report_LoginSuccess
where logindatetime between dbo.DateFloor(@fromDate) and dbo.DateSieling(@toDate)
And RTrim(Upper(RoleName)) = RTrim(Upper(@RoleName)) and [email protected]
End
Else
Begin
-- fetch all
Select * from vw_Report_LoginSuccess
where logindatetime between dbo.DateFloor(@fromDate) and dbo.DateSieling(@toDate)
And RTrim(Upper(RoleName)) = RTrim(Upper(@RoleName))
End
End
Else
Begin
If @Success!=2
Begin
Select * from vw_Report_LoginSuccess
where logindatetime between dbo.DateFloor(@fromDate) and dbo.DateSieling(@toDate)
and [email protected]
End
Else
Begin
Select * from vw_Report_LoginSuccess
where logindatetime between dbo.DateFloor(@fromDate) and dbo.DateSieling(@toDate)
End
End
e la vista da cui si può ottenere il set di risultati
CREATE VIEW [dbo].[vw_Report_LoginSuccess]
AS
SELECT '3' AS UserDetailID, dbo.tblLoginStatusDetail.Success, CONVERT(varchar, dbo.tblLoginStatusDetail.LoginDateTime, 101) AS LoginDateTime,
CONVERT(varchar, dbo.tblLoginStatusDetail.LogoutDateTime, 101) AS LogoutDateTime, dbo.tblLoginStatusDetail.TokenID,
dbo.tblUserDetail.SubscriberID, dbo.aspnet_Roles.RoleId, dbo.aspnet_Roles.RoleName
FROM dbo.tblLoginStatusDetail INNER JOIN
dbo.tblUserDetail ON dbo.tblLoginStatusDetail.UserDetailID = dbo.tblUserDetail.UserDetailID INNER JOIN
dbo.aspnet_UsersInRoles ON dbo.tblUserDetail.UserID = dbo.aspnet_UsersInRoles.UserId INNER JOIN
dbo.aspnet_Roles ON dbo.aspnet_UsersInRoles.RoleId = dbo.aspnet_Roles.RoleId
WHERE (dbo.tblLoginStatusDetail.Success = 0)
UNION all
SELECT dbo.tblLoginStatusDetail.UserDetailID, dbo.tblLoginStatusDetail.Success, CONVERT(varchar, dbo.tblLoginStatusDetail.LoginDateTime, 101)
AS LoginDateTime, CONVERT(varchar, dbo.tblLoginStatusDetail.LogoutDateTime, 101) AS LogoutDateTime, dbo.tblLoginStatusDetail.TokenID,
dbo.tblUserDetail.SubscriberID, dbo.aspnet_Roles.RoleId, dbo.aspnet_Roles.RoleName
FROM dbo.tblLoginStatusDetail INNER JOIN
dbo.tblUserDetail ON dbo.tblLoginStatusDetail.UserDetailID = dbo.tblUserDetail.UserDetailID INNER JOIN
dbo.aspnet_UsersInRoles ON dbo.tblUserDetail.UserID = dbo.aspnet_UsersInRoles.UserId INNER JOIN
dbo.aspnet_Roles ON dbo.aspnet_UsersInRoles.RoleId = dbo.aspnet_Roles.RoleId
WHERE (dbo.tblLoginStatusDetail.Success = 1) AND (dbo.tblUserDetail.SubscriberID LIKE N'P%')
Una vista è un testo memorizzato SQL di una query di selezione. I parametri sono fuori discussione. Quando la query memorizzata restituisce la colonna in cui si desidera filtrare, è possibile farlo nella query di chiamata. Per esempio. "SELECT * FROM v_emp WHERE emp_id =?" – Epicurist