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Preventing accidental overwrites with update SPs

By Cade Bryant,

Say you wanted to create an SP for updating records in a database.  How would you do this in such a way as to allow your users to edit only a subset of fields in the record, without overwriting the other fields, and without requiring verbose IF blocks and CASE statements in your code?

Simple.  Use the ISNULL function when assigning values to your variables, as shown here:

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