Hash on a column in a table

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Hash on a column in a table

kbnyny

Ten Centuries

Points: 1038
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November 4, 2015 at 10:07 am

#399276

I know nothing about hash on a table but I need a lot of help on this. Here what I want to accomplish, I have table that has 15 column one of the columns is ClientID that is about max 45char. I want to be able to hash on the column and return the hash value in a new column call ClientID_Hash. Is this possible? If so can someone please lead me in the right direction.
Thank you,
Kevin

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Sean Lange SSC Guru Points: 286590 More actions · Answer 1

kbnyny (11/4/2015)
I know nothing about hash on a table but I need a lot of help on this. Here what I want to accomplish, I have table that has 15 column one of the columns is ClientID that is about max 45char. I want to be able to hash on the column and return the hash value in a new column call ClientID_Hash. Is this possible? If so can someone please lead me in the right direction.
Thank you,
Kevin

It is not at all clear what you are trying to do here. Maybe you want HASHBYTES???

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Jeff Moden SSC Guru Points: 1004475 More actions · Answer 2

kbnyny (11/4/2015)
I know nothing about hash on a table but I need a lot of help on this. Here what I want to accomplish, I have table that has 15 column one of the columns is ClientID that is about max 45char. I want to be able to hash on the column and return the hash value in a new column call ClientID_Hash. Is this possible? If so can someone please lead me in the right direction.
Thank you,
Kevin

You're trying to hoe a row with a hammer. There are much better ways to do what you want but, let me ask, why do you think the ClientID column is a problem? Are you experiencing a performance problem or ???

--Jeff Moden

RBAR is pronounced "ree-bar" and is a "Modenism" for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
________Stop thinking about what you want to do to a ROW... think, instead, of what you want to do to a COLUMN.

Change is inevitable... Change for the better is not.

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