User Defined Function (UDF)

SQLServerCentral Article

Tokenizing a String Using PARSENAME

  • Article

SQL Server string manipulation using T-SQL leaves lots to be desired. Many postings and complaints about T-SQL deal with strings, but there are ways to work with it. Author Eli Leiba brings us a way to split out portions of a string that contains tokens with a user defined function. Read on to see how this is accomplished and the code used to perform the splitting.

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2004-12-27

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SQLServerCentral Article

UDF as Computed Column

  • Article

UDF's are useful if somewhat tricky. Dinesh uses a common scenario where you have a self referencing table (the common example is an employees table where each employee has a managerid that links to another employee in the same table) to illustrate how a UDF can make querying easier, how to use it as the basis of a computed column, and how to index that column.

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2003-06-18

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Question of the Day

Who am I?

If I want to track which login called a stored procedure and use the value in an audit, what function can I use to replace the xxx below?

create procedure AddNewCustomer
  @customername varchar(200)
AS
BEGIN
    DECLARE @added VARCHAR(100)
    SELECT @added = xxx

    IF @customername IS NOT NULL
      INSERT dbo.Customer
      (
          CustomerName,
          AddedBy 
      )
      VALUES
      (@customername, @added)
END

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