sqlpp11/tests/core/serialize/aggregate_function/count.cpp

/*
 * Copyright (c) 2023, 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
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 */

#include "Sample.h"
#include "../compare.h"
#include <sqlpp11/sqlpp11.h>

int main(int, char* [])
{
  const auto bar = test::TabBar{};

  // Single column.
  SQLPP_COMPARE(count(bar.id), "COUNT(tab_bar.id)");
  SQLPP_COMPARE(count(sqlpp::distinct, bar.id), "COUNT(DISTINCT tab_bar.id)");

  // Expression.
  SQLPP_COMPARE(count(bar.id + 7), "COUNT(tab_bar.id + 7)");
  SQLPP_COMPARE(count(sqlpp::distinct, bar.id + 7), "COUNT(DISTINCT tab_bar.id + 7)");

  // With sub select.
  SQLPP_COMPARE(count(select(sqlpp::value(7).as(sqlpp::alias::a))), "COUNT(SELECT 7 AS a)");
  SQLPP_COMPARE(count(sqlpp::distinct, select(sqlpp::value(7).as(sqlpp::alias::a))), "COUNT(DISTINCT SELECT 7 AS a)");

  return 0;
}