aspnet_Membership_GetPasswordWithFormat////

 1ALTER  PROCEDURE dbo.aspnet_Membership_GetPasswordWithFormat
 2    @ApplicationName                NVARCHAR(256),
 3    @UserName                       NVARCHAR(256)
 4AS
 5BEGIN
 6    DECLARE @Password                               NVARCHAR(128)
 7    DECLARE @PasswordFormat                         INT
 8    DECLARE @PasswordSalt                           NVARCHAR(128)
 9    DECLARE @IsLockedOut                            BIT
10    DECLARE @FailedPasswordAttemptCount             INT
11    DECLARE @FailedPasswordAnswerAttemptCount       INT
12    DECLARE @IsApproved                             BIT
13   /**//*又是声明一大堆变量，*/ 
14   
15
16    SELECT  @Password = m.Password,
17            @PasswordFormat = m.PasswordFormat,
18            @PasswordSalt = m.PasswordSalt,
19            @IsLockedOut = m.IsLockedOut,
20            @FailedPasswordAttemptCount = m.FailedPasswordAttemptCount,
21            @FailedPasswordAnswerAttemptCount = m.FailedPasswordAnswerAttemptCount,
22            @IsApproved = m.IsApproved
23    FROM    dbo.aspnet_Applications a, dbo.aspnet_Users u, dbo.aspnet_Membership m
24    WHERE   LOWER(@ApplicationName) = a.LoweredApplicationName AND
25            u.ApplicationId = a.ApplicationId    AND
26            u.UserId = m.UserId AND
27            LOWER(@UserName) = u.LoweredUserName
28     /**//*三表连接，附加条件为@ApplicationName/@UserName*/
29     
30    IF( @@rowcount = 0 )--如果受影响行数为0
31        RETURN 1
32
33    IF( @IsLockedOut = 1 ) --如果用户已经被锁定
34        RETURN 99
35
36    SELECT @Password,
37           @PasswordFormat,
38           @PasswordSalt,
39           @FailedPasswordAttemptCount,
40           @FailedPasswordAnswerAttemptCount,
41           @IsApproved
42    /**//*查询想要的字段，返回0*/
43    RETURN 0
44END