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 details the `ResultSourceInterface` for Google Cloud Spanner, specifically for version 2.20.0, and provides links to various other versions."],["`ResultSourceInterface` defines how `RowStream` implementations should behave, which is a stream of rows received from `spanner::Client::Read()` or `spanner::Client::ExecuteQuery()`."],["The `NextRow()` function retrieves the subsequent row from the stream and can return an error within a `StatusOr` if the stream is interrupted."],["`Metadata()` and `Stats()` functions can be used to return information about the result set, such as field types, transaction ID, row count, and the query plan, respectively."],["The provided content allows users to interact with the `RowStream` class and can be mocked for testing purposes."]]],[]]
