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problem with stored procedure


problem with stored procedure

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yennhi2812
yennhi2812
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Group: General Forum Members
Points: 2 Visits: 6
I have a table

Create table SINHVIEN (
   MASV      nvarchar(20) not null,
   HOTEN      nvarchar(100) not null,
   NGAYSINH   datetime,
   DIACHI      nvarchar(200),
   MALOP      varchar(20),
   TENDN      nvarchar(100) not null,
   MATKHAU      varbinary not null,
   constraint PK_SINHVIEN primary key (MASV)
)
go


and I want to create a stored procedure to insert values for this table in security by use md5 hash function.

CREATE PROCEDURE SP_INS_SINHVIEN
@MASV      nvarchar(20),
@HOTEN      nvarchar(100),
@NGAYSINH      datetime,
@DIACHI nvarchar(200),
@MALOP      varchar(20),
@TENDN nvarchar(100),
@MATKHAU      varchar(100)
AS
   INSERT INTO SINHVIEN
   VALUES
(
@MASV,
@HOTEN,
@NGAYSINH,
@DIACHI,
@MALOP,
@TENDN,
    HASHBYTES('MD5',@MATKHAU)
)
GO


but when I try to execute this stored procedure,


insert into SINHVIEN values ( '1012283','Vo Thi Yen Nhi', '01/01/1992', 'VietNam', 'TH2010/4', 'meomun', HashBytes('MD5', '123456'))


I get error


Msg 8152, Level 16, State 11, Line 1
String or binary data would be truncated.
The statement has been terminated.


I debug and know the problem is HashBytes('MD5', '123456')
how can I do to fix this problem?
Igor Micev
Igor Micev
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Group: General Forum Members
Points: 4166 Visits: 4845
Hi,

Change table:

alter table SINHVIEN
alter column MATKHAU varbinary(max) not null



Change SP:

Alter PROCEDURE SP_INS_SINHVIEN
@MASV      nvarchar(20),
@HOTEN      nvarchar(100),
@NGAYSINH      datetime,
@DIACHI nvarchar(200),
@MALOP      varchar(20),
@TENDN nvarchar(100),
@MATKHAU      varchar(8000)
AS
   INSERT INTO SINHVIEN
   VALUES
(
@MASV,
@HOTEN,
@NGAYSINH,
@DIACHI,
@MALOP,
@TENDN,
         convert(varbinary(max),HASHBYTES('MD5',@MATKHAU))
)
GO



Regards
IgorMi


Igor Micev,SQL Server developer at Seavuswww.seavus.com
yennhi2812
yennhi2812
Forum Newbie
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Group: General Forum Members
Points: 2 Visits: 6
Thank you so much!
Send from VietNam!
Go


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