Generate MD5 hash string with T-SQL

问题:

Is there a way to generate MD5 Hash string of type varchar(32) without using fn_varbintohexstr

SUBSTRING(master.dbo.fn_varbintohexstr(HashBytes('MD5', '[e-mail]')), 3, 32)

So it could be used inside a view with SCHEMABINDING

回答1:

CONVERT(VARCHAR(32), HashBytes('MD5', '[e-mail]'), 2)

回答2:

Use HashBytes

SELECT HashBytes('MD5', '[e-mail]')

That will give you 0xF53BD08920E5D25809DF2563EF9C52B6

-

SELECT CONVERT(NVARCHAR(32),HashBytes('MD5', '[e-mail]'),2)

That will give you F53BD08920E5D25809DF2563EF9C52B6

回答3:

Solution:

SUBSTRING(sys.fn_sqlvarbasetostr(HASHBYTES('MD5','your text')),3,32)

回答4:

None of the other answers worked for me. Note that SQL Server will give different results if you pass in a hard-coded string versus feed it from a column in your result set. Below is the magic that worked for me to give a perfect match between SQL Server and MySql

select LOWER(CONVERT(VARCHAR(32), HashBytes('MD5', CONVERT(varchar, EmailAddress)), 2)) from ...

回答5:

For data up to 8000 characters use:

CONVERT(VARCHAR(32), HashBytes('MD5', '[e-mail]'), 2)

Demo

For binary data (without the limit of 8000 bytes) use:

CONVERT(VARCHAR(32), master.sys.fn_repl_hash_binary(@binary_data), 2)

Demo

回答6:

try this:

select SUBSTRING(sys.fn_sqlvarbasetostr(HASHBYTES('MD5',  '[e-mail]' )),3,32) 

回答7:

declare @hash nvarchar(50)
--declare @hash varchar(50)

set @hash = '1111111-2;20190110143334;001'  -- result a5cd84bfc56e245bbf81210f05b7f65f
declare @value varbinary(max);
set @value = convert(varbinary(max),@hash);


select  
 SUBSTRING(sys.fn_sqlvarbasetostr(HASHBYTES('MD5', '1111111-2;20190110143334;001')),3,32) as 'OK'
,SUBSTRING(sys.fn_sqlvarbasetostr(HASHBYTES('MD5', @hash)),3,32) as 'ERROR_01'
,SUBSTRING(sys.fn_sqlvarbasetostr(HASHBYTES('MD5',convert(varbinary(max),@hash))),3,32) as 'ERROR_02'
,SUBSTRING(sys.fn_sqlvarbasetostr(sys.fn_repl_hash_binary(convert(varbinary(max),@hash))),3,32)
,SUBSTRING(sys.fn_sqlvarbasetostr(master.sys.fn_repl_hash_binary(@value)),3,32)

回答8:

SELECT CONVERT(
      VARCHAR(32),
      HASHBYTES(
                   'MD5',
                   CAST(prescrip.IsExpressExamRX AS VARCHAR(250))
                   + CAST(prescrip.[Description] AS VARCHAR(250))
               ),
      2
  ) MD5_Value;

works for me.