For convenience, callers may wrap instances in a StreamOf<std::tuple<...>> object, which will automatically parse each Row into a std::tuple with the specified types.
Example:
namespace spanner = ::google::cloud::spanner;
spanner::SqlStatement select(
"SELECT AlbumId, AlbumTitle, MarketingBudget"
" FROM Albums"
" WHERE AlbumTitle >= 'Aardvark' AND AlbumTitle < 'Goo'");
auto profile_query_result = client.ProfileQuery(std::move(select));
for (auto& row : profile_query_result) {
if (!row) throw std::move(row).status();
// Discard rows for brevity in this example.
}
// Stats are only available after all rows from the result have been read.
auto execution_stats = profile_query_result.ExecutionStats();
if (execution_stats) {
for (auto const& stat : *execution_stats) {
std::cout << stat.first << ":\t" << stat.second << "\n";
}
}
