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"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-07-02 UTC."],[[["This webpage provides documentation for the `ResultSourceInterface` in the Google Cloud Spanner C++ client library, covering versions from 2.11.0 up to the latest release candidate 2.37.0-rc."],["The `ResultSourceInterface` defines how to interact with `RowStream` objects, which are streams of `Rows` returned from Spanner client read and query operations."],["The `NextRow()` function within `ResultSourceInterface` allows retrieval of the next row in the stream, returning a `StatusOr` object that indicates either a successful row retrieval or an error status, with end-of-stream indicated by a successful empty row."],["`Metadata()` and `Stats()` functions provide access to metadata and statistics about the result set respectively, with more detailed information on these available in the Google Spanner RPC documentation."]]],[]]
