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."],[[["This document provides an overview of the `ResultSourceInterface` for Google Cloud Spanner in C++, including links to various versions ranging from 2.11.0 to the latest release candidate 2.37.0-rc."],["The `ResultSourceInterface` defines how `RowStream` implementations, used to stream rows from `spanner::Client::Read()` or `spanner::Client::ExecuteQuery()`, will function."],["`NextRow()` retrieves the next row in the stream, returning either a `StatusOr\u003cspanner::Row\u003e` containing the row or an error status, or an empty `spanner::Row` to signal the end of the stream."],["`Metadata()` function allows you to return metadata about the result set like field types and transaction id, and `Stats()` function returns statistics about the result set, like row counts and query plan."]]],[]]
