Hello,
How do you conditionally remove (or add) a field to a document?
E.g., I have a mapper:
Expression → Target Path
20 → $field1
10 → $field2
‘’ → $field3
null → $field4
So I now have:
[
{
‘field1’:20
,‘field2’:10
,‘field3’:‘’
,‘field4’:null
}
]
N...
