What is an IIF statement in SQL?

IIF is a shorthand way for writing a CASE expression. It evaluates the Boolean expression passed as the first argument, and then returns either of the other two arguments based on the result of the evaluation.

What is the difference between IIF and case statement?

IIF is one of the logical Transact-SQL function which returns one among the two values, based on the boolean expression. On the other hand, CASE is a language expression which evaluates a list of conditions and returns one among multiple values, based on the boolean expression.

How do I use IIF function?

You can use IIf anywhere you can use expressions. You use IIf to determine if another expression is true or false. If the expression is true, IIf returns one value; if it is false, IIf returns another….IIf Function.

Argument Description
falsepart Required. Value or expression returned if expr is False.

Does IIF work in SQL Server?

IIF() Function in SQL Server IIF() function judges or evaluates the first parameter and returns the second parameters if the first parameters is true; otherwise, it returns the third parameters. IIF() function used in SQL Server to add if-else logic to queries.> It is a value to be judged.

Is true in SQL Server?

SQL Server doesn’t have a Boolean data type nor the required operators IS TRUE , IS UNKNOWN , etc (though the SQL-99 Standard has both).

What does IIF stand for?


Acronym Definition
IIF If and only If
IIF Image Interchange Framework (digital motion picture production)
IIF Informix Internet Foundation
IIF Information in Identifiable Form

What is the IIF function in access?

The Microsoft Access iif function returns one value if a specified condition evaluates to TRUE, or another value if it evaluates to FALSE.

How do I add an IF condition in SQL query?


  1. IF (Expression )
  2. — If the condition is TRUE then execute the following statement.
  3. True Statements;
  4. — If the condition is False then execute the following statement.
  5. False Statements.