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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-22 UTC."],[[["\u003cp\u003eThis webpage provides documentation for the \u003ccode\u003eResultSourceInterface\u003c/code\u003e in the Google Cloud Spanner C++ client library, covering versions from 2.11.0 up to the latest release candidate 2.37.0-rc.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eResultSourceInterface\u003c/code\u003e defines how to interact with \u003ccode\u003eRowStream\u003c/code\u003e objects, which are streams of \u003ccode\u003eRows\u003c/code\u003e returned from Spanner client read and query operations.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eNextRow()\u003c/code\u003e function within \u003ccode\u003eResultSourceInterface\u003c/code\u003e allows retrieval of the next row in the stream, returning a \u003ccode\u003eStatusOr\u003c/code\u003e object that indicates either a successful row retrieval or an error status, with end-of-stream indicated by a successful empty row.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eMetadata()\u003c/code\u003e and \u003ccode\u003eStats()\u003c/code\u003e 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.\u003c/p\u003e\n"]]],[],null,[]]
