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Expression error after inner join using join snaps
Hi,
Getting below expression error in mapper after join snaps:-
Expression worked for 7 previous documengts, but failed on document #8 with the error: $[‘$’] is undefined
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2 Replies
You cannot use that expression. That’ basically means “Get root from root”, or something like that, and is not valid. I know that your field is called “$” so a smart thing to do is first to remap the field.
This error will occur if the key
"$"does not exist in your 8th document. You can either:- change your expression to
$.get('$')which will effectively produce anullvalue for$['$']downstream - or if your error is in a Mapper, you can also check the
checkbox, which will also produce a
nullvalue (but also applies null-safe to all the fields in your mapper).
- change your expression to
