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76 lines
3.1 KiB
C++
76 lines
3.1 KiB
C++
/*
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* Copyright (c) 2024, Roland Bock
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "compare.h"
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#include "Sample.h"
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#include <sqlpp11/sqlpp11.h>
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int SelectColumns(int, char*[])
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{
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const auto foo = test::TabFoo{};
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const auto bar = test::TabBar{};
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// Single column
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compare(__LINE__, select(foo.doubleN), "SELECT tab_foo.double_n");
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// Two columns
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compare(__LINE__, select(foo.doubleN, bar.id), "SELECT tab_foo.double_n,tab_bar.id");
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// All columns of a table
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compare(__LINE__, select(all_of(foo)),
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"SELECT tab_foo.id,tab_foo.text_nn_d,tab_foo.int_n,tab_foo.double_n,tab_foo.u_int_n,tab_foo.blob_n");
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// All columns of a table plus one more
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compare(
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__LINE__, select(all_of(foo), bar.id),
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"SELECT tab_foo.id,tab_foo.text_nn_d,tab_foo.int_n,tab_foo.double_n,tab_foo.u_int_n,tab_foo.blob_n,tab_bar.id");
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// One more, plus all columns of a table
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compare(
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__LINE__, select(bar.id, all_of(foo)),
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"SELECT tab_bar.id,tab_foo.id,tab_foo.text_nn_d,tab_foo.int_n,tab_foo.double_n,tab_foo.u_int_n,tab_foo.blob_n");
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// Column and aggregate function
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compare(__LINE__, select(foo.doubleN, count(bar.id)), "SELECT tab_foo.double_n,COUNT(tab_bar.id) AS count_");
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// Column aliases
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compare(__LINE__, select(foo.doubleN.as(sqlpp::alias::o), count(bar.id).as(sqlpp::alias::a)),
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"SELECT tab_foo.double_n AS o,COUNT(tab_bar.id) AS a");
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// Optional column manually
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compare(__LINE__, select(sqlpp::compat::make_optional(bar.id)), "SELECT tab_bar.id");
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auto opt_id = sqlpp::compat::make_optional(bar.id);
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opt_id.reset();
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compare(__LINE__, select(opt_id), "SELECT NULL AS id");
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// Optional column using `if_`
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compare(__LINE__, select(bar.id.if_(true)), "SELECT tab_bar.id");
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compare(__LINE__, select(bar.id.if_(false)), "SELECT NULL AS id");
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#warning: add more optional column tests
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return 0;
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}
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