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82 lines
2.9 KiB
C++
82 lines
2.9 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 "Sample.h"
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#include <sqlpp11/alias_provider.h>
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#include <sqlpp11/parameter.h>
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#include <sqlpp11/update.h>
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#include <sqlpp11/verbatim.h>
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#include <sqlpp11/sqlite3/connection.h>
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#include <iostream>
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namespace sql = sqlpp::sqlite3;
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int Execute(int, char*[])
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{
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sql::connection db({":memory:", SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE, "", true});
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// execute supports single statements.
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db.execute(R"(SELECT 1)");
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// execute throws an exception if multiple statements are passed in the string.
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try
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{
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db.execute(R"(SELECT 1; SELECT 2)");
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}
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catch (const sqlpp::exception& e)
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{
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const auto message = std::string(e.what());
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if (message.find("Cannot execute multi-statements") == message.npos)
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{
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std::cerr << "Unexpected exception for multi-statement: " << message;
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return 1;
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}
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}
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// execute supports running a prepared statement
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const auto tab = test::TabBar{};
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db.execute(R"(CREATE TABLE tab_bar (
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alpha bigint AUTO_INCREMENT,
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beta varchar(255) NULL DEFAULT "",
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gamma bool NOT NULL,
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delta int);
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)");
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auto u = sqlpp::update(tab)
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.set(tab.delta = sqlpp::parameter(tab.delta))
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.where(sqlpp::verbatim<sqlpp::unsigned_integral>("ROWID")
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== sqlpp::parameter(sqlpp::unsigned_integral(), sqlpp::alias::i));
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auto u_stmnt = db.prepare(u);
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u_stmnt.params.delta = 42;
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u_stmnt.params.i = 69u;
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db.execute(u_stmnt);
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return 0;
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}
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