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 2025-03-21 UTC."],[[["This webpage provides documentation for the `ResultSourceInterface` in the Google Cloud Spanner C++ client library, with the latest release candidate version being 2.37.0-rc."],["The content outlines different versions of the `ResultSourceInterface`, ranging from version 2.11.0 to the current latest candidate version, with each version linking to specific documentation for that version."],["The `ResultSourceInterface` defines the interface for `RowStream` implementations, which are used to represent streams of `Rows` returned from `spanner::Client::Read()` or `spanner::Client::ExecuteQuery()`."],["Key functions within the `ResultSourceInterface` include `NextRow()`, which retrieves the next row in the stream and indicates end-of-stream or failure, `Metadata()`, which returns metadata about the result set, and `Stats()`, which provides statistics about the result set."]]],[]]
