|expression||A conditional expression.|
|trueresult||The result to return when the expression is true. This may be any expression or action.|
|falseresult||The result to return when the expression is false. This may be any expression or action. This may be omitted only if the result is an action.|
|Return:||IF returns a single value, set, recordset, or action.|
The IFF function performs the same functionality as IF, but ensures that an expression containing complex boolean logic is evaluated exactly as it appears.