Cloud Spanner C++ Client Library

The Cloud Spanner C++ Client library offers types and functions to use Cloud Spanner from C++ applications.

The following "Hello World" program should give you a sense of how to use this library. This program is also used to illustrate how to incorporate the library into your project.

See more code actions.
#include "google/cloud/spanner/client.h"
#include <iostream>

int main(int argc, char* argv[]) {
 
if (argc != 4) {
    std
::cerr << "Usage: " << argv[0]
             
<< " project-id instance-id database-id\n";
   
return 1;
 
}

 
namespace spanner = ::google::cloud::spanner;
  spanner
::Client client(
      spanner
::MakeConnection(spanner::Database(argv[1], argv[2], argv[3])));

 
auto rows =
      client
.ExecuteQuery(spanner::SqlStatement("SELECT 'Hello World'"));

 
for (auto const& row : spanner::StreamOf<std::tuple<std::string>>(rows)) {
   
if (!row) {
      std
::cerr << row.status() << "\n";
     
return 1;
   
}
    std
::cout << std::get<0>(*row) << "\n";
 
}

 
return 0;
}

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