| Join(BatchPolicy, Key, Join[]) | Read all bins in left record and then join with right records. Each join bin name (Join.binNameKeys) must exist in the left record. The join bin must contain a list of keys. Those key are used to retrieve other records using a separate batch get. |
| Join(BatchPolicy, Key, String[], Join[]) | Read specified bins in left record and then join with right records. Each join bin name (Join.leftKeysBinName) must exist in the left record. The join bin must contain a list of keys. Those key are used to retrieve other records using a separate batch get. |