if the stream is interrupted due to a failure the StatusOr<spanner::Row> contains the error. The function returns a successful StatusOr<> with an empty spanner::Row to indicate end-of-stream.
Metadata()
Returns metadata about the result set, such as the field types and the transaction id created by the request.
[[["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 2025-03-14 UTC."],[[["The webpage provides documentation for the `ResultSourceInterface` in the Google Cloud Spanner C++ library, detailing its role in handling `RowStream` implementations."],["It lists available versions of the library, from the latest release candidate (2.37.0-rc) down to version 2.11.0."],["The `ResultSourceInterface` defines how `RowStream` objects, which are streams of rows from `spanner::Client::Read()` or `spanner::Client::ExecuteQuery()`, are handled."],["Key functions of the interface include `NextRow()`, which retrieves the next row, `Metadata()`, which returns result set metadata, and `Stats()`, which returns result set statistics."],["The documentation links to further information about result set metadata and statistics from the Google Spanner RPC documentation."]]],[]]
