diff --git a/sqlite_wrapper.cpp b/sqlite_wrapper.cpp
index e8822ad..7133c3a 100644
--- a/sqlite_wrapper.cpp
+++ b/sqlite_wrapper.cpp
@@ -2,6 +2,12 @@
 #include <cstring>
 #include <cstdio>
 
+namespace MiniEngine
+{
+
+namespace SQL
+{
+
 // private
 void SQLStatement::_set(sqlite3_stmt* p)
 {
@@ -65,8 +71,19 @@ int SQLDB::step(const SQLStatement& Statement)
 
 int SQLDB::exec(const std::string& SQLCommand,SQLCallback callback,void* param)
 {
-    char* errmsg=nullptr;
-    int ret=sqlite3_exec(_get(),SQLCommand.c_str(),callback,param,&errmsg);
-    printf("ErrMsg: %s\n",errmsg);
-    return ret;
+    return sqlite3_exec(_get(),SQLCommand.c_str(),callback,param,&_errmsg);
 }
+
+const char* SQLDB::getErrorMsg()
+{
+    return _errmsg;
+}
+
+void SQLDB::clearError()
+{
+    _errmsg=nullptr;
+}
+
+}/// End of namespace MiniEngine::SQL
+
+}/// End of namespace MiniEngine
diff --git a/sqlite_wrapper.h b/sqlite_wrapper.h
index 9364192..9102fa6 100644
--- a/sqlite_wrapper.h
+++ b/sqlite_wrapper.h
@@ -3,6 +3,12 @@
 #include <string>
 #include <memory>
 
+namespace MiniEngine
+{
+
+namespace SQL
+{
+
 class SQLStatement
 {
 public:
@@ -32,10 +38,15 @@ public:
     SQLStatement prepare(const std::string& SQLCommand);
     int step(const SQLStatement& Statement);
     int exec(const std::string& SQLCommand,SQLCallback callback,void* param);
+    const char* getErrorMsg();
+    void clearError();
 private:
     sqlite3* _get();
     void _set(sqlite3*);
     std::shared_ptr<sqlite3> _db;
+    char* _errmsg;
 };
 
+}/// End of namespace MiniEngine::SQL
 
+}/// End of namespace MiniEngine