SQL: ISNULL Function


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question 1 of 3

Examine the following code. What is missing?

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1. Using ISNULL to replace a NULL value with another value is used mainly in _____.

2. Examine the following code. What will the value of cost be if the statement finds a NULL value?

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About This Quiz & Worksheet

Answer these questions to see what you know about the ISNULL function in SQL. You will review your knowledge of specific uses for this function as well as the correct syntax.

Quiz & Worksheet Goals

In this quiz and worksheet you'll review your knowledge of:

  • Why you would use ISNULL for mathematical problems in SQL
  • Specific programs that use ISNULL in SQL
  • Correct syntax for this command

Skills Practiced

  • Problem solving - use acquired knowledge to correctly identify errors in strings of SQL code related to ISNULL
  • Information recall - access the knowledge you've gained regarding how to write ISNULL commands in SQL
  • Knowledge application - use your knowledge to answer questions about how ISNULL is used and what software suites it is most effective in

Additional Learning

To learn more about this command, read the lesson titled SQL: ISNULL Function.

  • Specific uses for ISNULL
  • What the expression is in SQL
  • What is moved to the SET statement