--- a/src/Configuration.h	Sun Jan 19 18:41:32 2020 +0100
+++ b/src/Configuration.h	Mon Jan 20 12:39:22 2020 +0100
@@ -30,6 +30,7 @@
 public:
 	string_t relation;
 	std::vector<RequestedField> fields;
+	int parallelism = 1;
 
 	virtual ~Configuration() {
 	}