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From: Erland Sommarskog <esquel@sommarskog.se>
Newsgroups: comp.databases.ms-sqlserver
Subject: Re: Varbinary and nvarchar problem
Date: Mon, 23 Jun 2014 21:33:35 +0200
Organization: Erland Sommarskog
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Shelly (sheldonlg@thevillages.net) writes:
> I also tried converting each piece int the HASHBYTES to a varchar or to 
> an nvarchar and still got errors in the pieces -- even though the one 
> without any conversions -- the plain HASHBYTES -- worked. I also tried 
> CAST, but still had those errors.
> 
> Why does
> 
> CONVERT(VARCHAR(32), something-that-works, 2)
> 
> fail -- and with a conversion to int?
> 

Because you use it in expression which also includes an integer value, 
(which because of the data-type precedence rules in SQL Server leads to an 
implicit conversion) or you are trying to insert the data into an integer
column/variable.

That is all I can say without seeing the rest of the code and the
table definitions. Well, one more thing: watch out for triggers with
dynamic SQL.

-- 
Erland Sommarskog, Stockholm, esquel@sommarskog.se