/* * Copyright (c) 2013 - 2016, Roland Bock * All rights reserved. * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * * * Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "TabSample.h" #include #include #include const auto library_raii = sqlpp::mysql::scoped_library_initializer_t{0, nullptr, nullptr}; namespace sql = sqlpp::mysql; const auto tab = TabSample{}; int Union(int, char*[]) { auto config = std::make_shared(); config->user = "root"; config->database = "sqlpp_mysql"; config->debug = true; try { sql::connection db(config); } catch (const sqlpp::exception& e) { std::cerr << "For testing, you'll need to create a database sqlpp_mysql for user root (no password)" << std::endl; std::cerr << e.what() << std::endl; return 1; } try { sql::connection db(config); db.execute(R"(DROP TABLE IF EXISTS tab_sample)"); db.execute(R"(CREATE TABLE tab_sample ( alpha bigint(20) AUTO_INCREMENT, beta bool DEFAULT NULL, gamma varchar(255) DEFAULT NULL, PRIMARY KEY (alpha) ))"); auto u = select(all_of(tab)).from(tab).unconditionally().union_all(select(all_of(tab)).from(tab).unconditionally()); for (const auto& row : db(u)) { std::cout << row.alpha << row.beta << row.gamma << std::endl; } for (const auto& row : db(u.union_distinct(select(all_of(tab)).from(tab).unconditionally()))) { std::cout << row.alpha << row.beta << row.gamma << std::endl; } } catch (const std::exception& e) { std::cerr << "Exception: " << e.what() << std::endl; return 1; } return 0; }