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By mswatcher
via sqlservercurry.com
Submitted: Mar 22 2014 / 03:05

User Defined Functions play an important role in SQL Server. User Defined functions can be used to perform a complex logic, can accept parameters and return data. Many a times we have to write complex logic which cannot be written using a single query. In such scenarios, UDFs play an important role. For example, we can call user defined function in a where clause or use a user defined function in a JOIN [Where UDF returns a result set].
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