PartitionReadRequest(mapping=None, *, ignore_unknown_fields=False, **kwargs)The request for
PartitionRead][google.spanner.v1.Spanner.PartitionRead]
Attributes
| Name | Description |
| session |
str
Required. The session used to create the partitions. |
| transaction |
google.cloud.spanner_v1.types.TransactionSelector
Read only snapshot transactions are supported, read/write and single use transactions are not. |
| table |
str
Required. The name of the table in the database to be read. |
| index |
str
If non-empty, the name of an index on `table][google.spanner.v1.PartitionReadRequest.table]`. This index is used instead of the table primary key when interpreting `key_set][google.spanner.v1.PartitionReadRequest.key_set]` and sorting result rows. See `key_set][google.spanner.v1.PartitionReadRequest.key_set]` for further information. |
| columns |
Sequence[str]
The columns of `table][google.spanner.v1.PartitionReadRequest.table]` to be returned for each row matching this request. |
| key_set |
google.cloud.spanner_v1.types.KeySet
Required. ``key_set`` identifies the rows to be yielded. ``key_set`` names the primary keys of the rows in `table][google.spanner.v1.PartitionReadRequest.table]` to be yielded, unless `index][google.spanner.v1.PartitionReadRequest.index]` is present. If `index][google.spanner.v1.PartitionReadRequest.index]` is present, then `key_set][google.spanner.v1.PartitionReadRequest.key_set]` instead names index keys in `index][google.spanner.v1.PartitionReadRequest.index]`. It is not an error for the ``key_set`` to name rows that do not exist in the database. Read yields nothing for nonexistent rows. |
| partition_options |
google.cloud.spanner_v1.types.PartitionOptions
Additional options that affect how many partitions are created. |