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Defensive Database Programming with SQL Server by Alex Kuznetsov

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Introduction

Resilient T-SQL code is code that is designed to last, and to be safely reused by others. The goal of defensive database programming, and of this book, is to help you to produce resilient T-SQL code that robustly and gracefully handles cases of unintended use, and is resilient to common changes to the database environment.

Too often, as developers, we stop work as soon as our code passes a few basic tests to confirm that it produces the "right result" in a given use case. We do not stop to consider the other possible ways in which the code might be used in the future, or how our code will respond to common changes to the database environment, such as a change in the database language setting, or a change to the nullability of a table ...

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