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sqlpp11/tests/core/serialize/clause/from.cpp
2024-10-26 11:29:58 +02:00

71 lines
3.1 KiB
C++

/*
* Copyright (c) 2024, 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 "../compare.h"
#include <sqlpp11/sqlpp11.h>
int main()
{
const auto foo = test::TabFoo{};
const auto bar = test::TabBar{};
const auto aFoo = foo.as(sqlpp::alias::a);
const auto bFoo = foo.as(sqlpp::alias::b);
const auto cFoo = foo.as(sqlpp::alias::c);
const auto x = cte(sqlpp::alias::x).as(select(foo.id).from(foo).unconditionally());
const auto xa = x.as(sqlpp::alias::a);
const auto xb = x.as(sqlpp::alias::b);
const auto y = cte(sqlpp::alias::y).as(select(foo.id).from(foo).unconditionally());
// Single table
SQLPP_COMPARE(from(foo), " FROM tab_foo");
// Tests with joined tables are mostly covered by join tests.
// Static joins
SQLPP_COMPARE(from(foo.cross_join(bar)), " FROM tab_foo CROSS JOIN tab_bar");
SQLPP_COMPARE(from(foo.join(bar).on(foo.id == bar.id)),
" FROM tab_foo INNER JOIN tab_bar ON tab_foo.id = tab_bar.id");
// Multiple tables
SQLPP_COMPARE(from(aFoo.join(bFoo).on(aFoo.id == bFoo.id).join(cFoo).on(bFoo.id == cFoo.id)),
" FROM tab_foo AS a INNER JOIN tab_foo AS b ON a.id = b.id INNER JOIN tab_foo AS c ON b.id = c.id");
// CTE
SQLPP_COMPARE(from(x), " FROM x");
SQLPP_COMPARE(from(foo.join(x).on(x.id == foo.id)), " FROM tab_foo INNER JOIN x ON x.id = tab_foo.id");
SQLPP_COMPARE(from(x.join(foo).on(x.id == foo.id)), " FROM x INNER JOIN tab_foo ON x.id = tab_foo.id");
SQLPP_COMPARE(from(x.join(y).on(x.id == y.id)), " FROM x INNER JOIN y ON x.id = y.id");
#warning: Some of these should go into CTE tests
SQLPP_COMPARE(xa, "x AS a");
SQLPP_COMPARE(xa.id == xb.id, "a.id = b.id");
SQLPP_COMPARE(from(xa.join(xb).on(xa.id == xb.id)), " FROM x AS a INNER JOIN x AS b ON a.id = b.id");
#warning add tests for dynamic joins
return 0;
}