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#include <iostream>
#include "test_helpers.hxx"
using namespace pqxx;
namespace
{
// Simple test program for libpqxx. Open connection to database, start
// a transaction, and perform a query inside it.
void test_001()
{
connection conn;
std::cout
<< "Connected to database." << std::endl
<< "Backend version: " << conn.server_version() << std::endl
<< "Protocol version: " << conn.protocol_version() << std::endl;
// Begin a transaction acting on our current connection. Give it a human-
// readable name so the library can include it in error messages.
work tx{conn, "test1"};
// Perform a query on the database, storing result rows in R.
result r( tx.exec("SELECT * FROM pg_tables") );
// We're expecting to find some tables...
PQXX_CHECK(not r.empty(), "No tables found. Cannot test.");
// Process each successive result row
for (const auto &c: r)
{
// Dump row number and column 0 value to cout. Read the value using
// as(), which converts the field to the same type as the default value
// you give it (or returns the default value if the field is null).
std::cout
<< '\t' << to_string(c.num()) << '\t' << c[0].as(std::string{})
<< std::endl;
}
tx.commit();
}
PQXX_REGISTER_TEST(test_001);
} // namespace
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