Requires exactly one of an object's properties to be present.
Distributes the way AtLeastOne does, but types the other keys as
never rather than leaving them optional, so supplying a second one is an
error. That is the difference between a filter, where several comparison
operators compose into a range, and a key condition, where DynamoDB has room
for one condition on the sort key.
Requires exactly one of an object's properties to be present.
Distributes the way AtLeastOne does, but types the other keys as
neverrather than leaving them optional, so supplying a second one is an error. That is the difference between a filter, where several comparison operators compose into a range, and a key condition, where DynamoDB has room for one condition on the sort key.