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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-07-08 UTC."],[[["This webpage provides documentation for the `ResultSourceInterface` in the Google Cloud Spanner C++ library, with a focus on versions ranging from 2.11.0 to 2.37.0-rc."],["The `ResultSourceInterface` defines how to get the next row in a stream, as implemented in the `RowStream` class, returned by methods such as `spanner::Client::Read()` and `spanner::Client::ExecuteQuery()`."],["The `NextRow()` function returns the next row in the stream, or a `StatusOr` object indicating an error or end-of-stream."],["`Metadata()` can be called to retrieve metadata related to the result set, like field types and transaction IDs."],["The `Stats()` function can be called to retrieve statistics about the result set, for example, the number of rows and the query plan used."]]],[]]
