diff --git a/CMakeLists.txt b/CMakeLists.txt
index f5dd4c0f..4e1381dc 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -8,6 +8,8 @@ include(cmake/dependency.cmake)
 
 if (ENABLE_MYSQL)
     include_directories(${MYSQL_INCLUDE_DIR} include)
+elseif(ENABLE_MARIADB)
+    include_directories(${MARIADB_INCLUDE_DIR} include)
 else()
     include_directories(include)
 endif()
diff --git a/cmake/develop.cmake b/cmake/develop.cmake
index d207c010..04bd3901 100644
--- a/cmake/develop.cmake
+++ b/cmake/develop.cmake
@@ -69,12 +69,19 @@ if (ENABLE_MYSQL)
     add_definitions(-DORMPP_ENABLE_MYSQL)
 endif()
 
+option(ENABLE_MARIADB "Enable mariadb" OFF)
+if (ENABLE_MARIADB)
+    include(cmake/mariadb.cmake)
+    message(STATUS "ENABLE_MARIADB")
+    add_definitions(-DORMPP_ENABLE_MYSQL)
+endif()
+
 option(ENABLE_PG "Enable pg" OFF)
 if (ENABLE_PG)
     message(STATUS "ENABLE_PG")
     add_definitions(-DORMPP_ENABLE_PG)
 endif()
 
-if (NOT ENABLE_SQLITE3 AND NOT ENABLE_MYSQL AND NOT ENABLE_PG)
-message(FATAL_ERROR "please enable a option")
+if (NOT ENABLE_SQLITE3 AND NOT ENABLE_MYSQL AND NOT ENABLE_MARIADB AND NOT ENABLE_PG)
+message(FATAL_ERROR "please enable a option, ENABLE_SQLITE3 or ENABLE_MYSQL or ENABLE_MARIADB or ENABLE_PG")
 endif()
\ No newline at end of file
diff --git a/cmake/mariadb.cmake b/cmake/mariadb.cmake
new file mode 100644
index 00000000..27af23c0
--- /dev/null
+++ b/cmake/mariadb.cmake
@@ -0,0 +1,63 @@
+# - Find mariadb
+# Find the native MariaDB includes and library
+#
+#  MARIADB_INCLUDE_DIR - where to find mysql.h, etc.
+#  MARIADB_LIBRARIES   - List of libraries when using MariaDB.
+#  MARIADB_FOUND       - True if MariaDB found.
+
+IF (MARIADB_INCLUDE_DIR)
+  # Already in cache, be silent
+  SET(MARIADB_FIND_QUIETLY TRUE)
+ENDIF (MARIADB_INCLUDE_DIR)
+
+IF (UNIX)
+  FIND_PATH(MARIADB_INCLUDE_DIR mysql.h
+    /usr/local/include/mariadb
+    /usr/include/mariadb
+  )
+ELSEIF (WIN32)
+  FIND_PATH(MARIADB_INCLUDE_DIR mysql.h
+    $ENV{PROGRAMFILES}/MariaDB*/include
+    $ENV{SYSTEMDRIVE}/MariaDB*/include
+  )
+ENDIF()
+
+SET(MARIADB_NAMES mariadb)
+IF (UNIX)
+  FIND_LIBRARY(MARIADB_LIBRARY
+    NAMES ${MARIADB_NAMES}
+    PATHS /usr/lib /usr/local/lib
+    PATH_SUFFIXES mariadb
+  )
+ELSEIF (WIN32)
+  FIND_LIBRARY(MARIADB_LIBRARY
+    NAMES ${MARIADB_NAMES}
+    PATHS $ENV{PROGRAMFILES}/MariaDB*/lib 
+    $ENV{SYSTEMDRIVE}/MariaDB*/lib
+    PATH_SUFFIXES mariadb
+  )
+ENDIF()
+
+IF (MARIADB_INCLUDE_DIR AND MARIADB_LIBRARY)
+  SET(MARIADB_FOUND TRUE)
+  SET( MARIADB_LIBRARY ${MARIADB_LIBRARY} )
+ELSE (MARIADB_INCLUDE_DIR AND MARIADB_LIBRARY)
+  SET(MARIADB_FOUND FALSE)
+  SET( MARIADB_LIBRARY )
+ENDIF (MARIADB_INCLUDE_DIR AND MARIADB_LIBRARY)
+
+IF (MARIADB_FOUND)
+  #IF (NOT MARIADB_FIND_QUIETLY)
+    MESSAGE(STATUS "Found MariaDB: ${MARIADB_LIBRARY}")
+  #ENDIF (NOT MARIADB_FIND_QUIETLY)
+ELSE (MARIADB_FOUND)
+  IF (MARIADB_FIND_REQUIRED)
+    MESSAGE(STATUS "Looked for MariaDB libraries named ${MARIADB_NAMES}.")
+    MESSAGE(FATAL_ERROR "Could NOT find MariaDB library")
+  ENDIF (MARIADB_FIND_REQUIRED)
+ENDIF (MARIADB_FOUND)
+
+MARK_AS_ADVANCED(
+  MARIADB_LIBRARY
+  MARIADB_INCLUDE_DIR
+  )
\ No newline at end of file
diff --git a/cmake/mysql.cmake b/cmake/mysql.cmake
index 539f3284..68c847fc 100644
--- a/cmake/mysql.cmake
+++ b/cmake/mysql.cmake
@@ -10,17 +10,33 @@ IF (MYSQL_INCLUDE_DIR)
   SET(MYSQL_FIND_QUIETLY TRUE)
 ENDIF (MYSQL_INCLUDE_DIR)
 
-FIND_PATH(MYSQL_INCLUDE_DIR mysql.h
-  /usr/local/include/mysql
-  /usr/include/mysql
-)
+IF (UNIX)
+  FIND_PATH(MYSQL_INCLUDE_DIR mysql.h
+    /usr/local/include/mysql
+    /usr/include/mysql
+  )
+ELSEIF (WIN32)
+  FIND_PATH(MYSQL_INCLUDE_DIR mysql.h
+    $ENV{PROGRAMFILES}/MySQL/*/include
+    $ENV{SYSTEMDRIVE}/MySQL/*/include
+  )
+ENDIF()
 
 SET(MYSQL_NAMES mysqlclient mysqlclient_r)
-FIND_LIBRARY(MYSQL_LIBRARY
-  NAMES ${MYSQL_NAMES}
-  PATHS /usr/lib /usr/local/lib
-  PATH_SUFFIXES mysql
-)
+IF (UNIX)
+  FIND_LIBRARY(MYSQL_LIBRARY
+    NAMES ${MYSQL_NAMES}
+    PATHS /usr/lib /usr/local/lib
+    PATH_SUFFIXES mysql
+  )
+ELSEIF (WIN32)
+  FIND_LIBRARY(MYSQL_LIBRARY
+    NAMES ${MYSQL_NAMES}
+    PATHS $ENV{PROGRAMFILES}/MySQL/*/lib 
+    $ENV{SYSTEMDRIVE}/MySQL/*/lib
+    PATH_SUFFIXES mysql
+  )
+ENDIF()
 
 IF (MYSQL_INCLUDE_DIR AND MYSQL_LIBRARY)
   SET(MYSQL_FOUND TRUE)
diff --git a/example/CMakeLists.txt b/example/CMakeLists.txt
index fadaef43..b7e1d656 100644
--- a/example/CMakeLists.txt
+++ b/example/CMakeLists.txt
@@ -13,6 +13,10 @@ if (ENABLE_MYSQL)
         endif()
 endif()
 
+if (ENABLE_MARIADB)
+        target_link_libraries(${PROJECT_NAME} ${MARIADB_LIBRARY})
+endif()
+
 if (ENABLE_SQLITE3)
         target_link_libraries(${PROJECT_NAME} sqlite3)
 endif()
diff --git a/include/mysql.hpp b/include/mysql.hpp
index a830842f..b39a661b 100644
--- a/include/mysql.hpp
+++ b/include/mysql.hpp
@@ -82,7 +82,7 @@ class mysql {
     reset_error();
     std::string sql = generate_createtb_sql<T>(std::forward<Args>(args)...);
     sql += " DEFAULT CHARSET=utf8";
-#if ORMPP_ENABLE_LOG
+#ifdef ORMPP_ENABLE_LOG
     std::cout << sql << std::endl;
 #endif
     if (mysql_query(con_, sql.data())) {
@@ -136,7 +136,7 @@ class mysql {
   bool delete_records(Args &&...where_conditon) {
     reset_error();
     auto sql = generate_delete_sql<T>(std::forward<Args>(where_conditon)...);
-#if ORMPP_ENABLE_LOG
+#ifdef ORMPP_ENABLE_LOG
     std::cout << sql << std::endl;
 #endif
     if (mysql_query(con_, sql.data())) {
@@ -158,7 +158,7 @@ class mysql {
     constexpr auto SIZE = std::tuple_size_v<T>;
 
     std::string sql = s;
-#if ORMPP_ENABLE_LOG
+#ifdef ORMPP_ENABLE_LOG
     std::cout << sql << std::endl;
 #endif
     constexpr auto Args_Size = sizeof...(Args);
@@ -344,9 +344,9 @@ class mysql {
     return v;
   }
 
-  template <typename T>
+  template <typename T, typename B>
   void set_param_bind(MYSQL_BIND &param_bind, T &&value, int i,
-                      std::map<size_t, std::vector<char>> &mp, bool &is_null) {
+                      std::map<size_t, std::vector<char>> &mp, B &is_null) {
     using U = std::remove_const_t<std::remove_reference_t<T>>;
     if constexpr (is_optional_v<U>::value) {
       return set_param_bind(param_bind, *value, i, mp, is_null);
@@ -377,7 +377,7 @@ class mysql {
       param_bind.buffer = &(mp.rbegin()->second[0]);
       param_bind.buffer_length = 65536;
     }
-    param_bind.is_null = &is_null;
+    param_bind.is_null = (B)&is_null;
   }
 
   template <typename T>
@@ -417,7 +417,7 @@ class mysql {
       Args &&...args) {
     reset_error();
     std::string sql = generate_query_sql<T>(args...);
-#if ORMPP_ENABLE_LOG
+#ifdef ORMPP_ENABLE_LOG
     std::cout << sql << std::endl;
 #endif
     constexpr auto SIZE = iguana::get_value<T>();
@@ -435,9 +435,9 @@ class mysql {
       return {};
     }
 
+    std::array<decltype(std::declval<MYSQL_BIND>().is_null), SIZE> nulls = {};
     std::array<MYSQL_BIND, SIZE> param_binds = {};
     std::map<size_t, std::vector<char>> mp;
-    std::array<bool, SIZE> nulls = {};
 
     std::vector<T> v;
     T t{};
@@ -743,7 +743,7 @@ class mysql {
   template <typename T, typename... Args>
   int insert_impl(const std::string &sql, const T &t,
                   bool get_insert_id = false, Args &&...args) {
-#if ORMPP_ENABLE_LOG
+#ifdef ORMPP_ENABLE_LOG
     std::cout << sql << std::endl;
 #endif
     stmt_ = mysql_stmt_init(con_);
@@ -759,13 +759,13 @@ class mysql {
     if (stmt_execute(t) < 0)
       return INT_MIN;
 
-    return get_insert_id ? stmt_->insert_id : 1;
+    return get_insert_id ? stmt_->mysql->insert_id : 1;
   }
 
   template <typename T, typename... Args>
   int insert_impl(const std::string &sql, const std::vector<T> &t,
                   bool get_insert_id = false, Args &&...args) {
-#if ORMPP_ENABLE_LOG
+#ifdef ORMPP_ENABLE_LOG
     std::cout << sql << std::endl;
 #endif
     stmt_ = mysql_stmt_init(con_);
@@ -792,7 +792,8 @@ class mysql {
     }
     b = commit();
 
-    return b ? (get_insert_id ? stmt_->insert_id : (int)t.size()) : INT_MIN;
+    return b ? (get_insert_id ? stmt_->mysql->insert_id : (int)t.size())
+             : INT_MIN;
   }
 
   template <typename... Args>
diff --git a/include/postgresql.hpp b/include/postgresql.hpp
index 883ef1b0..12bf7171 100644
--- a/include/postgresql.hpp
+++ b/include/postgresql.hpp
@@ -65,7 +65,7 @@ class postgresql {
     //            PQclear(res_);
 
     std::string sql = generate_createtb_sql<T>(std::forward<Args>(args)...);
-#if ORMPP_ENABLE_LOG
+#ifdef ORMPP_ENABLE_LOG
     std::cout << sql << std::endl;
 #endif
     res_ = PQexec(con_, sql.data());
@@ -176,7 +176,7 @@ class postgresql {
   constexpr std::enable_if_t<iguana::is_reflection_v<T>, std::vector<T>> query(
       Args &&...args) {
     std::string sql = generate_query_sql<T>(std::forward<Args>(args)...);
-#if ORMPP_ENABLE_LOG
+#ifdef ORMPP_ENABLE_LOG
     std::cout << sql << std::endl;
 #endif
     constexpr auto SIZE = iguana::get_value<T>();
@@ -213,7 +213,7 @@ class postgresql {
     constexpr auto SIZE = std::tuple_size_v<T>;
 
     std::string sql = s;
-#if ORMPP_ENABLE_LOG
+#ifdef ORMPP_ENABLE_LOG
     std::cout << sql << std::endl;
 #endif
     constexpr auto Args_Size = sizeof...(Args);
@@ -265,7 +265,7 @@ class postgresql {
   template <typename T, typename... Args>
   constexpr bool delete_records(Args &&...where_conditon) {
     auto sql = generate_delete_sql<T>(std::forward<Args>(where_conditon)...);
-#if ORMPP_ENABLE_LOG
+#ifdef ORMPP_ENABLE_LOG
     std::cout << sql << std::endl;
 #endif
     res_ = PQexec(con_, sql.data());
@@ -515,7 +515,7 @@ class postgresql {
   template <typename T, typename... Args>
   constexpr int insert_impl(const std::string &sql, const T &t,
                             Args &&...args) {
-#if ORMPP_ENABLE_LOG
+#ifdef ORMPP_ENABLE_LOG
     std::cout << sql << std::endl;
 #endif
     std::vector<std::vector<char>> param_values;
diff --git a/include/sqlite.hpp b/include/sqlite.hpp
index 6d00338e..3586e3cd 100644
--- a/include/sqlite.hpp
+++ b/include/sqlite.hpp
@@ -58,7 +58,7 @@ class sqlite {
     //            }
 
     std::string sql = generate_createtb_sql<T>(std::forward<Args>(args)...);
-#if ORMPP_ENABLE_LOG
+#ifdef ORMPP_ENABLE_LOG
     std::cout << sql << std::endl;
 #endif
     if (sqlite3_exec(handle_, sql.data(), nullptr, nullptr, nullptr) !=
@@ -108,7 +108,7 @@ class sqlite {
   template <typename T, typename... Args>
   bool delete_records(Args &&...where_conditon) {
     auto sql = generate_delete_sql<T>(std::forward<Args>(where_conditon)...);
-#if ORMPP_ENABLE_LOG
+#ifdef ORMPP_ENABLE_LOG
     std::cout << sql << std::endl;
 #endif
     if (sqlite3_exec(handle_, sql.data(), nullptr, nullptr, nullptr) !=
@@ -126,7 +126,7 @@ class sqlite {
   std::enable_if_t<iguana::is_reflection_v<T>, std::vector<T>> query(
       Args &&...args) {
     std::string sql = generate_query_sql<T>(args...);
-#if ORMPP_ENABLE_LOG
+#ifdef ORMPP_ENABLE_LOG
     std::cout << sql << std::endl;
 #endif
     int result = sqlite3_prepare_v2(handle_, sql.data(), (int)sql.size(),
@@ -165,7 +165,7 @@ class sqlite {
     constexpr auto SIZE = std::tuple_size_v<T>;
 
     std::string sql = s;
-#if ORMPP_ENABLE_LOG
+#ifdef ORMPP_ENABLE_LOG
     std::cout << sql << std::endl;
 #endif
     constexpr auto Args_Size = sizeof...(Args);
@@ -440,7 +440,7 @@ class sqlite {
   template <typename T, typename... Args>
   int insert_impl(bool is_update, const std::string &sql, const T &t,
                   bool get_insert_id = false, Args &&...args) {
-#if ORMPP_ENABLE_LOG
+#ifdef ORMPP_ENABLE_LOG
     std::cout << sql << std::endl;
 #endif
     int result = sqlite3_prepare_v2(handle_, sql.data(), (int)sql.size(),
@@ -489,7 +489,7 @@ class sqlite {
   int insert_impl(bool is_update, const std::string &sql,
                   const std::vector<T> &v, bool get_insert_id = false,
                   Args &&...args) {
-#if ORMPP_ENABLE_LOG
+#ifdef ORMPP_ENABLE_LOG
     std::cout << sql << std::endl;
 #endif
     int result = sqlite3_prepare_v2(handle_, sql.data(), (int)sql.size(),
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 2ac72a8d..c9ec1583 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -14,6 +14,10 @@ if (ENABLE_MYSQL)
         endif()
 endif()
 
+if (ENABLE_MARIADB)
+        target_link_libraries(${PROJECT_NAME} ${MARIADB_LIBRARY})
+endif()
+
 if (ENABLE_SQLITE3)
         target_link_libraries(${PROJECT_NAME} sqlite3 doctest)
 endif()