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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-22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, focusing on version 2.18.0, but also including links to many other versions.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eResultSourceInterface\u003c/code\u003e defines how to interact with streams of rows, known as \u003ccode\u003eRowStream\u003c/code\u003e, which are the result of \u003ccode\u003espanner::Client::Read()\u003c/code\u003e or \u003ccode\u003espanner::Client::ExecuteQuery()\u003c/code\u003e operations.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eNextRow()\u003c/code\u003e function allows you to retrieve the next row in the stream, with error handling if there are any issues.\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 \u003ccode\u003eStats()\u003c/code\u003e provides information on the results.\u003c/p\u003e\n"],["\u003cp\u003eThis class is useful for applications, but can also be mocked when testing code that interacts with the \u003ccode\u003espanner::Client\u003c/code\u003e.\u003c/p\u003e\n"]]],[],null,[]]
