Expose MySQL affected row counts

src/lib/mysql-connector.cpp

@@ -202,6 +202,7 @@ static bool mysql_has_unquoted_positional_placeholder(String query);
 
 DValue MySQL::query(String q)
 {
+	affected_rows = 0;
 	if(mysql_has_unquoted_positional_placeholder(q))
 	{
 		_preload_next_error_code = CR_UNKNOWN_ERROR;

src/lib/mysql-connector.h

@@ -104,3 +104,8 @@ inline u64 mysql_insert_id(MySQL* m)
 {
 	return(m->insert_id);
 }
+
+inline u32 mysql_affected_rows(MySQL* m)
+{
+	return(m ? m->affected_rows : 0);
+}