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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-22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 the contract for \u003ccode\u003eRowStream\u003c/code\u003e implementations, which represent a stream of \u003ccode\u003eRows\u003c/code\u003e returned 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 next row from the stream and returns it within a \u003ccode\u003eStatusOr<spanner::Row>\u003c/code\u003e, indicating either success with the row or an error status, and an empty row signifies the end of the stream.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eMetadata()\u003c/code\u003e function provides details about the result set, such as field types and the transaction ID, while the \u003ccode\u003eStats()\u003c/code\u003e function offers statistics like row counts and the query plan used, both returning their data in optional form.\u003c/p\u003e\n"],["\u003cp\u003eThe page contains links to the documentation of the many versions of \u003ccode\u003eResultSourceInterface\u003c/code\u003e which can be found in the side bar.\u003c/p\u003e\n"]]],[],null,[]]
