mirror of
https://github.com/rbock/sqlpp11.git
synced 2024-11-16 12:51:13 +08:00
78 lines
3.1 KiB
C++
78 lines
3.1 KiB
C++
/*
|
|
* Copyright (c) 2013-2015, 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 "Sample.h"
|
|
#include "MockDb.h"
|
|
#include <sqlpp11/select.h>
|
|
#include <sqlpp11/alias_provider.h>
|
|
#include <iostream>
|
|
|
|
namespace greek
|
|
{
|
|
SQLPP_ALIAS_PROVIDER(id)
|
|
SQLPP_ALIAS_PROVIDER(textN)
|
|
}
|
|
|
|
int Union(int, char* [])
|
|
{
|
|
MockDb db;
|
|
MockDb::_serializer_context_t printer = {};
|
|
|
|
const auto t = test::TabBar{};
|
|
const auto f = test::TabFoo{};
|
|
|
|
#warning: reactive after renaming
|
|
#if 0
|
|
db(select(t.id).from(t).unconditionally().union_distinct(select(f.intN.as(t.id)).from(f).unconditionally()));
|
|
db(select(t.id).from(t).unconditionally().union_all(select(f.intN.as(t.id)).from(f).unconditionally()));
|
|
|
|
// t.id can be null, a given value cannot
|
|
db(select(t.id).from(t).unconditionally().union_all(select(sqlpp::value(1).as(t.id))));
|
|
db(select(t.id).from(t).unconditionally().union_all(select(sqlpp::value(1).as(greek::id))));
|
|
|
|
// t.textN can be null, f.textNnD cannot
|
|
static_assert(sqlpp::can_be_null_t<decltype(t.textN)>::value, "");
|
|
static_assert(!sqlpp::can_be_null_t<decltype(f.textNnD)>::value, "");
|
|
db(select(t.textN).from(t).unconditionally().union_all(select(f.textNnD.as(greek::textN)).from(f).unconditionally()));
|
|
|
|
auto u = select(t.id)
|
|
.from(t)
|
|
.unconditionally()
|
|
.union_all(select(f.intN.as(t.id)).from(f).unconditionally())
|
|
.as(sqlpp::alias::u);
|
|
|
|
db(select(all_of(u)).from(u).unconditionally().union_all(select(t.intN.as(t.id)).from(t).unconditionally()));
|
|
db(select(u.id).from(u).unconditionally().union_all(select(t.intN.as(t.id)).from(t).unconditionally()));
|
|
|
|
db(select(t.id)
|
|
.from(t)
|
|
.unconditionally()
|
|
.union_all(select(t.id).from(t).unconditionally())
|
|
.union_all(select(t.id).from(t).unconditionally()));
|
|
#endif
|
|
|
|
return 0;
|
|
}
|