Hash of CF and SQL Server


Hello

Basically, I receive a hash of a pk and would like to compare this hash value a pk in SQL Server.  It has no hash value that is stored in this table.  So I have to use CF function compare to compare the entire table while loop.  As a result, it's slow.  Y at - it functions in SQL server, or something that I can get a faster result of comparison?

Here is essentially the loop of the table and the comparison.

< name cfquery = "name" >

SELECT id

FROM tbl

< / cfquery >

< cfloop query = "name" >

< cfset hashID = HASH (name.id, "SHA") >

< cfif COMPARE(url.id,hashID) EQ 0 >

[do something]

< / cfif >

< / cfloop >

You certainly don't want the single quotes around the id, because who would literally be passing the 'id' string to the function.  You may need to wrap the id in a CAST statement to convert an int to a string.

Then

HASHBYTES ('SHA1', ID)

would become

HASHBYTES ('SHA1', CAST (id as varchar (10)))

-Carl V.

Tags: ColdFusion

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