Add order_by and limit for mysql remove and update

Thanks to ZerQAQ for suggesting this on github.
2026-05-08 04:10:08 -05:00 · 2021-08-14 10:49:18 +02:00
parent c1e754d83c
commit 1d57d28994
6 changed files with 288 additions and 0 deletions
@@ -23,3 +23,5 @@ build_and_run(DynamicSelectTest)
 build_and_run(MoveConstructorTest)
 build_and_run(PreparedTest)
 build_and_run(TruncatedTest)
+build_and_run(UpdateTest)
+build_and_run(RemoveTest)
@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 2021 - 2021, Roland Bock, ZerQAQ
+ * 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 "TabSample.h"
+#include <sqlpp11/mysql/mysql.h>
+#include <sqlpp11/sqlpp11.h>
+
+#include <iostream>
+#include <vector>
+
+const auto tab = TabSample{};
+
+namespace sql = sqlpp::mysql;
+
+int main()
+{
+  auto config = std::make_shared<sql::connection_config>();
+  config->user = "root";
+  config->database = "sqlpp_mysql";
+  config->debug = true;
+  try
+  {
+    sql::connection db(config);
+  }
+  catch (const sqlpp::exception& e)
+  {
+    std::cerr << "For testing, you'll need to create a database sqlpp_mysql for user root (no password)" << std::endl;
+    std::cerr << e.what() << std::endl;
+    return 1;
+  }
+  try
+  {
+    sql::connection db(config);
+    db.execute(R"(DROP TABLE IF EXISTS tab_sample)");
+    db.execute(R"(CREATE TABLE tab_sample (
+		alpha bigint(20) AUTO_INCREMENT,
+			beta varchar(255) DEFAULT NULL,
+			gamma bool DEFAULT NULL,
+			PRIMARY KEY (alpha)
+			))");
+
+    db(insert_into(tab).set(tab.beta = "1", tab.gamma = false));
+    db(insert_into(tab).set(tab.beta = "2", tab.gamma = false));
+    db(insert_into(tab).set(tab.beta = "3", tab.gamma = false));
+
+    db(sql::remove_from(tab).unconditionally().order_by(tab.alpha.desc()).limit(1u));
+    for(const auto &row : db(sqlpp::select(tab.beta).from(tab).unconditionally().order_by(tab.alpha.desc()).limit(1u))){
+      assert(row.beta == "2");
+    }
+  }
+  catch (const std::exception& e)
+  {
+    std::cerr << "Exception: " << e.what() << std::endl;
+    return 1;
+  }
+}
+
@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 2021 - 2021, Roland Bock, ZerQAQ
+ * 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 "TabSample.h"
+#include <sqlpp11/mysql/mysql.h>
+#include <sqlpp11/sqlpp11.h>
+
+#include <iostream>
+#include <vector>
+
+const auto tab = TabSample{};
+
+namespace sql = sqlpp::mysql;
+
+int main()
+{
+  auto config = std::make_shared<sql::connection_config>();
+  config->user = "root";
+  config->database = "sqlpp_mysql";
+  config->debug = true;
+  try
+  {
+    sql::connection db(config);
+  }
+  catch (const sqlpp::exception& e)
+  {
+    std::cerr << "For testing, you'll need to create a database sqlpp_mysql for user root (no password)" << std::endl;
+    std::cerr << e.what() << std::endl;
+    return 1;
+  }
+  try
+  {
+    sql::connection db(config);
+    db.execute(R"(DROP TABLE IF EXISTS tab_sample)");
+    db.execute(R"(CREATE TABLE tab_sample (
+		alpha bigint(20) AUTO_INCREMENT,
+			beta varchar(255) DEFAULT NULL,
+			gamma bool DEFAULT NULL,
+			PRIMARY KEY (alpha)
+			))");
+
+    db(insert_into(tab).set(tab.beta = "1", tab.gamma = false));
+    db(insert_into(tab).set(tab.beta = "2", tab.gamma = false));
+    db(insert_into(tab).set(tab.beta = "3", tab.gamma = false));
+
+    db(sql::update(tab).set(tab.gamma = true).unconditionally().order_by(tab.alpha.desc()).limit(1u));
+    for(const auto &row : db(sqlpp::select(tab.gamma).from(tab).where(tab.beta == "3"))){
+      assert(row.gamma);
+    }
+  }
+  catch (const std::exception& e)
+  {
+    std::cerr << "Exception: " << e.what() << std::endl;
+    return 1;
+  }
+}
+