clientToken

Unique, case-sensitive string of up to 64 ASCII characters specified when a Query request is made. Providing a ClientToken makes the call to Queryidempotent. This means that running the same query repeatedly will produce the same result. In other words, making multiple identical Query requests has the same effect as making a single request. When using ClientToken in a query, note the following:

• If the Query API is instantiated without a ClientToken, the Query SDK generates a ClientToken on your behalf.

• If the Query invocation only contains the ClientToken but does not include a NextToken, that invocation of Query is assumed to be a new query run.

• If the invocation contains NextToken, that particular invocation is assumed to be a subsequent invocation of a prior call to the Query API, and a result set is returned.

• After 4 hours, any request with the same ClientToken is treated as a new request.