68 lines
2.4 KiB
C++
68 lines
2.4 KiB
C++
|
/*
|
||
|
|
* 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 <sqlpp11/sqlite3/connection.h>
|
||
|
|
#include <sqlpp11/sqlpp11.h>
|
||
|
|
|
||
|
|
#ifdef SQLPP_USE_SQLCIPHER
|
||
|
|
#include <sqlcipher/sqlite3.h>
|
||
|
|
#else
|
||
|
|
#include <sqlite3.h>
|
||
|
|
#endif
|
||
|
|
#include <iostream>
|
||
|
|
|
||
|
|
namespace sql = sqlpp::sqlite3;
|
||
|
|
const auto tab = TabSample{};
|
||
|
|
|
||
|
|
int Union(int, char*[])
|
||
|
|
{
|
||
|
|
sql::connection_config config;
|
||
|
|
config.path_to_database = ":memory:";
|
||
|
|
config.flags = SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE;
|
||
|
|
config.debug = true;
|
||
|
|
|
||
|
|
sql::connection db(config);
|
||
|
|
db.execute(R"(CREATE TABLE tab_sample (
|
||
|
|
alpha INTEGER PRIMARY KEY,
|
||
|
|
beta varchar(255) DEFAULT NULL,
|
||
|
|
gamma bool DEFAULT NULL
|
||
|
|
))");
|
||
|
|
|
||
|
|
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;
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|