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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-14 UTC."],[[["\u003cp\u003eThe webpage provides documentation for the \u003ccode\u003eResultSourceInterface\u003c/code\u003e in the Google Cloud Spanner C++ library, detailing its role in handling \u003ccode\u003eRowStream\u003c/code\u003e implementations.\u003c/p\u003e\n"],["\u003cp\u003eIt lists available versions of the library, from the latest release candidate (2.37.0-rc) down to version 2.11.0.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eResultSourceInterface\u003c/code\u003e defines how \u003ccode\u003eRowStream\u003c/code\u003e objects, which are streams of rows from \u003ccode\u003espanner::Client::Read()\u003c/code\u003e or \u003ccode\u003espanner::Client::ExecuteQuery()\u003c/code\u003e, are handled.\u003c/p\u003e\n"],["\u003cp\u003eKey functions of the interface include \u003ccode\u003eNextRow()\u003c/code\u003e, which retrieves the next row, \u003ccode\u003eMetadata()\u003c/code\u003e, which returns result set metadata, and \u003ccode\u003eStats()\u003c/code\u003e, which returns result set statistics.\u003c/p\u003e\n"],["\u003cp\u003eThe documentation links to further information about result set metadata and statistics from the Google Spanner RPC documentation.\u003c/p\u003e\n"]]],[],null,[]]
