diff --git a/include/sqlpp11/detail/logic.h b/include/sqlpp11/detail/logic.h
new file mode 100644
index 00000000..72e3a318
--- /dev/null
+++ b/include/sqlpp11/detail/logic.h
@@ -0,0 +1,88 @@
+/*
+ * Copyright (c) 2013, 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.
+ */
+
+#ifndef SQLPP_DETAIL_LOGIC_H
+#define SQLPP_DETAIL_LOGIC_H
+
+#include <type_traits>
+
+namespace sqlpp
+{
+	namespace detail
+	{
+		template<bool... b>
+			struct and_impl;
+
+		template<>
+			struct and_impl<>
+			{
+				static constexpr bool value = true;
+			};
+
+		template<bool... Rest>
+			struct and_impl<true, Rest...>
+			{
+				static constexpr bool value = and_impl<Rest...>::value;
+			};
+
+		template<bool... Rest>
+			struct and_impl<false, Rest...>
+			{
+				static constexpr bool value = false;
+			};
+
+		template<template<typename> class Predicate, typename... T>
+			using and_t = and_impl<Predicate<T>::value...>;
+
+		template<bool... b>
+			struct or_impl;
+
+		template<>
+			struct or_impl<>
+			{
+				static constexpr bool value = false;
+			};
+
+		template<bool... Rest>
+			struct or_impl<false, Rest...>
+			{
+				static constexpr bool value = or_impl<Rest...>::value;
+			};
+
+		template<bool... Rest>
+			struct or_impl<true, Rest...>
+			{
+				static constexpr bool value = true;
+			};
+
+		template<template<typename> class Predicate, typename... T>
+			using or_t = or_impl<Predicate<T>::value...>;
+
+	}
+}
+
+
+#endif