Do you want to pass a string and generate a HASH value from it using SQL Server? Here’s a very simple way of doing so using HashBytes. Let us see this with an example:
DECLARE @SomeValue nvarchar(50);
SELECT @SomeValue = 'SQLServerCurry';
SELECT HashBytes('SHA1', @SomeValue);
GO
generates an output
0x51FD96B1BD5CE0003370551D5498BA3C0E64BE4C
Using HashBytes, you can use algorithms like MD2, MD4, MD5, SHA or SHA1. The input string can be a varchar, nvarchar or varbinary and can be upto a maximum of 8000 bytes
About The Author
Suprotim Agarwal, MCSD, MCAD, MCDBA, MCSE, is the founder of
DotNetCurry,
DNC Magazine for Developers,
SQLServerCurry and
DevCurry. He has also authored a couple of books
51 Recipes using jQuery with ASP.NET Controls and a new one recently at
The Absolutely Awesome jQuery CookBook.
Suprotim has received the prestigous Microsoft MVP award for nine times in a row now. In a professional capacity, he is the CEO of A2Z Knowledge Visuals Pvt Ltd, a digital group that represents premium web sites and digital publications comprising of Professional web, windows, mobile and cloud developers, technical managers, and architects.
Get in touch with him on Twitter @suprotimagarwal, LinkedIn or befriend him on Facebook
2 comments:
the function only uses the first 30 characters of your string
sorry that was my fault, i did something like HASHBYTES('SHA1', cast( '...really large string' as nvarchar)) which when you don't specify a size it uses 30 so it was truncating its value, my bad
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