/* * 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 #include #include #include #include #include #include #include const auto library_raii = sqlpp::mysql::scoped_library_initializer_t{}; namespace mysql = sqlpp::mysql; int DynamicSelect(int, char*[]) { auto config = std::make_shared(); config->user = "root"; config->database = "sqlpp_mysql"; config->debug = true; try { mysql::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 { mysql::connection db(config); db.execute(R"(DROP TABLE IF EXISTS tab_sample)"); db.execute(R"(CREATE TABLE tab_sample ( alpha bigint(20) DEFAULT NULL, beta varchar(255) DEFAULT NULL, gamma bool DEFAULT NULL ))"); const auto tab = TabSample{}; db(insert_into(tab).set(tab.gamma = true)); auto i = insert_into(tab).columns(tab.beta, tab.gamma); i.values.add(tab.beta = "rhabarbertorte", tab.gamma = false); i.values.add(tab.beta = "cheesecake", tab.gamma = false); i.values.add(tab.beta = "kaesekuchen", tab.gamma = true); db(i); auto s = dynamic_select(db).dynamic_columns(tab.alpha).from(tab).unconditionally(); s.selected_columns.add(tab.beta); for (const auto& row : db(s)) { std::cerr << "row.alpha: " << row.alpha << ", row.beta: " << row.at("beta") << std::endl; }; } catch (const std::exception& e) { std::cerr << "Exception: " << e.what() << std::endl; return 1; } return 0; }