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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-22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 document details the \u003ccode\u003eResultSourceInterface\u003c/code\u003e for Google Cloud Spanner's C++ client library, specifically for version 2.24.0 and other versions listed.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eResultSourceInterface\u003c/code\u003e provides a way to interact with \u003ccode\u003eRowStream\u003c/code\u003e implementations, which return streams of \u003ccode\u003eRows\u003c/code\u003e from \u003ccode\u003espanner::Client::Read()\u003c/code\u003e or \u003ccode\u003espanner::Client::ExecuteQuery()\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eNextRow()\u003c/code\u003e function retrieves the subsequent row in the stream, returning a \u003ccode\u003eStatusOr<spanner::Row>\u003c/code\u003e which signifies the row or an error, and an empty \u003ccode\u003espanner::Row\u003c/code\u003e indicates end-of-stream.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eMetadata()\u003c/code\u003e and \u003ccode\u003eStats()\u003c/code\u003e are available to fetch details on the result set, including field types, transaction ID, number of rows, and the query plan.\u003c/p\u003e\n"],["\u003cp\u003eThe latest release can be found in the list under version 2.37.0-rc, but the documentation is specific to the ResultSourceInterface in relation to version 2.24.0.\u003c/p\u003e\n"]]],[],null,[]]
