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Format: default ( value, value, ... )

Purpose: Evaluates the operands from left to right and returns the first one which is defined and not null.

Return Values: Returns null if all operands are null or not defined, otherwise the value which is defined and not null.

Note: In case you use operands that are not defined, you should not use a function call as operand, too. Instead, assign the result of the function call to a variable first and pass this variable to the default function.


input:resulting output:
<? default (null,5,7)>5
<? default (null,ff.x.y.z,null) "Nn">null

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