Added static assert to give clearer error message for dynamic_xy

include/sqlpp11/insert.h

@@ -28,6 +28,7 @@
 #define SQLPP_INSERT_H
 
 #include <sqlpp11/statement.h>
+#include <sqlpp11/connection.h>
 #include <sqlpp11/type_traits.h>
 #include <sqlpp11/parameter_list.h>
 #include <sqlpp11/prepared_insert.h>
@@ -111,6 +112,7 @@ namespace sqlpp
 		constexpr auto  dynamic_insert(const Database&)
 		-> decltype(blank_insert_t<Database>())
 		{
+			static_assert(std::is_base_of<connection, Database>::value, "Invalid database parameter");
 			return { blank_insert_t<Database>() };
 		}
 
@@ -118,6 +120,7 @@ namespace sqlpp
 		constexpr auto  dynamic_insert_into(const Database&, Table table)
 		-> decltype(blank_insert_t<Database>().into(table))
 		{
+			static_assert(std::is_base_of<connection, Database>::value, "Invalid database parameter");
 			return { blank_insert_t<Database>().into(table) };
 		}
 }

include/sqlpp11/remove.h

@@ -28,6 +28,7 @@
 #define SQLPP_REMOVE_H
 
 #include <sqlpp11/statement.h>
+#include <sqlpp11/connection.h>
 #include <sqlpp11/type_traits.h>
 #include <sqlpp11/parameter_list.h>
 #include <sqlpp11/prepared_remove.h>
@@ -115,6 +116,7 @@ namespace sqlpp
 		auto  dynamic_remove(const Database&)
 		-> decltype(blank_remove_t<Database>())
 		{
+			static_assert(std::is_base_of<connection, Database>::value, "Invalid database parameter");
 			return { blank_remove_t<Database>() };
 		}
 
@@ -122,6 +124,7 @@ namespace sqlpp
 		auto  dynamic_remove_from(const Database&, Table table)
 		-> decltype(blank_remove_t<Database>().from(table))
 		{
+			static_assert(std::is_base_of<connection, Database>::value, "Invalid database parameter");
 			return { blank_remove_t<Database>().from(table) };
 		}
 }

include/sqlpp11/select.h

@@ -30,6 +30,7 @@
 #include <sqlpp11/statement.h>
 
 #include <sqlpp11/noop.h>
+#include <sqlpp11/connection.h>
 #include <sqlpp11/select_flag_list.h>
 #include <sqlpp11/select_column_list.h>
 #include <sqlpp11/from.h>
@@ -94,6 +95,7 @@ namespace sqlpp
 	template<typename Database>
 		blank_select_t<Database> dynamic_select(const Database&)
 		{
+			static_assert(std::is_base_of<connection, Database>::value, "Invalid database parameter");
 			return { };
 		}
 
@@ -101,6 +103,7 @@ namespace sqlpp
 		auto dynamic_select(const Database&, Columns... columns)
 		-> decltype(blank_select_t<Database>().columns(columns...))
 		{
+			static_assert(std::is_base_of<connection, Database>::value, "Invalid database parameter");
 			return blank_select_t<Database>().columns(columns...);
 		}
 

include/sqlpp11/update.h

@@ -28,7 +28,7 @@
 #define SQLPP_UPDATE_H
 
 #include <sqlpp11/statement.h>
-
+#include <sqlpp11/connection.h>
 #include <sqlpp11/type_traits.h>
 #include <sqlpp11/parameter_list.h>
 #include <sqlpp11/prepared_update.h>
@@ -109,6 +109,7 @@ namespace sqlpp
 		constexpr auto  dynamic_update(const Database&, Table table)
 		-> decltype(blank_update_t<Database>().from(table))
 		{
+			static_assert(std::is_base_of<connection, Database>::value, "Invalid database parameter");
 			return { blank_update_t<Database>().from(table) };
 		}
 }