The ReadPartition class is a regular type that represents a single slice of a parallel Read operation.
Instances of ReadPartition are created by Client::PartitionRead. Once created, ReadPartition objects can be serialized, transmitted to separate processes, and used to read data in parallel using Client::Read. If data_boost is set, those requests will be executed using the independent compute resources of Cloud Spanner Data Boost.
Constructors
ReadPartition(ReadPartition const &)
Copy and move.
Parameter
Name
Description
ReadPartition const &
ReadPartition(ReadPartition &&)
Copy and move.
Parameter
Name
Description
ReadPartition &&
ReadPartition()
Constructs an instance of ReadPartition that does not specify any table or columns to be read.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-03-21 UTC."],[[["The webpage details the `ReadPartition` class in the Google Cloud Spanner C++ library, offering versioned documentation from 2.11.0 to the latest release candidate 2.37.0-rc."],["`ReadPartition` represents a segment of a parallel Read operation, enabling data to be divided into smaller parts for parallel processing."],["`ReadPartition` instances are created using `Client::PartitionRead` and can be transmitted across different processes for parallel reads using `Client::Read`, potentially leveraging Data Boost for enhanced performance."],["The `ReadPartition` class offers constructors for copying, moving, and creating default instances, along with assignment operators for similar actions."],["It provides functions like `TableName()`, `ColumnNames()`, and `ReadOptions()` to retrieve the table name, column names, and read options, respectively, associated with a partition."]]],[]]
