diff --git a/a8/mysql.cc b/a8/mysql.cc
index 2fcac89..1aefde4 100644
--- a/a8/mysql.cc
+++ b/a8/mysql.cc
@@ -192,6 +192,12 @@ namespace a8
             return impl_->mysqlres ? mysql_num_rows(impl_->mysqlres) : 0;
         }
 
+        int Query::FieldsNum()
+        {
+            assert(impl_->mysqlres);
+            return impl_->mysqlres ? mysql_num_fields(impl_->mysqlres) : 0;
+        }
+
         bool Query::Eof()
         {
             assert(impl_->mysqlres);
diff --git a/a8/mysql.h b/a8/mysql.h
index 8e045f8..2299d06 100644
--- a/a8/mysql.h
+++ b/a8/mysql.h
@@ -38,6 +38,7 @@ namespace a8
             std::string FormatSqlEx(const char* fmt, std::initializer_list<a8::XValue> args);
             std::string FormatSql(const char* fmt, std::initializer_list<a8::XValue>& args);
             int RowsNum();
+            int FieldsNum();
             bool Eof();
             void First();
             void Prev();