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iff

The iff function evaluates the first argument (the predicate), and returns the value of either the second or third arguments, depending on whether the predicate evaluated to true (second) or false (third).

The second and third arguments must be of the same type.

Alias: iif (iff and iif are synonyms.)

Syntax
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iff( Predicate, IfTrue, IfFalse )

Arguments
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  • Predicate: An expression that evaluates to a boolean value.
  • IfTrue: An expression that gets evaluated and its value returned from the function if Predicate evaluates to true.
  • IfFalse: An expression that gets evaluated and its value returned from the function if Predicate evaluates to false.

Results
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This function returns the value of IfTrue if predicate evaluates to true, or the value of IfFalse otherwise.

Example
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  • | extend day = iff(floor(Timestamp, 1d)==floor(now(), 1d), "today", "anotherday")