^missing(varname)?

[EinarRoed]

Can someone please tell me what ^missing(varname) means? I assume that ^ means IF, so that IF the varname doesn't exist, something happens.Or perhaps it means NOT?

Incidentally, it's used in the Where-statements in Extract transformations in DI Studio.

Thanks.

[Ksharp · Accepted solution]

It means not missing .

That is to say varname is not missing .