added mysql backend

backends/mysql/src/mysql_prepared_result_reader.cpp

@@ -0,0 +1,28 @@
+#include "mysql_prepared_result_reader.hpp"
+
+namespace matador::backends::mysql {
+
+mysql_prepared_result_reader::mysql_prepared_result_reader(MYSQL_STMT *stmt)
+: stmt_(stmt)
+{}
+
+mysql_prepared_result_reader::~mysql_prepared_result_reader()
+{
+
+}
+
+size_t mysql_prepared_result_reader::column_count() const
+{
+  return 0;
+}
+
+const char *mysql_prepared_result_reader::column(size_t index) const
+{
+  return nullptr;
+}
+
+bool mysql_prepared_result_reader::fetch()
+{
+  return false;
+}
+}