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Common Mistakes in T-SQL Code

Rich Benner builds a list:

One potential issue here is the lack of time to delve really deeply into each programming language at one’s disposal. The thing about SQL Server is that it is a language that performs very differently than, say, C#. Those languages are row based, which means it’s common to iterate through a data set and process each row individually. This works quite well in those languages, but quite terribly in SQL Server. Being a set-based language, SQL Server prefers to deal with the whole data set at once.

Because of these nuances, it’s easy for developers to make mistakes when creating SQL server code. Let’s go through some common errors that we see.

Read on for several common mistakes that we often find in our code.