diff --git a/src/engine/joinOrdering/CostIKKBZ.cpp b/src/engine/joinOrdering/CostIKKBZ.cpp
index 3eaa3df3fe..2d28dbb024 100644
--- a/src/engine/joinOrdering/CostIKKBZ.cpp
+++ b/src/engine/joinOrdering/CostIKKBZ.cpp
@@ -39,7 +39,7 @@ auto CostIKKBZ<N>::T(const QueryGraph<N>& g, const N& n) -> float {
 template <typename N>
 requires RelationAble<N>
 auto CostIKKBZ<N>::rank(const QueryGraph<N>& g, const N& n) -> float {
-  if (rank_m.contains(n)) return rank_m[n];
+  //  if (rank_m.contains(n)) return rank_m[n];
 
   auto c = C(g, n);
   auto t = T(g, n);
@@ -50,7 +50,7 @@ auto CostIKKBZ<N>::rank(const QueryGraph<N>& g, const N& n) -> float {
   // assert rank [0, 1]
   AD_CONTRACT_CHECK(r >= 0 && r <= 1);
 
-  rank_m[n] = r;
+  //  rank_m[n] = r;
   return r;
 }
 }  // namespace JoinOrdering
diff --git a/src/engine/joinOrdering/GOO.cpp b/src/engine/joinOrdering/GOO.cpp
index 5f662d8f65..1dff9978c7 100644
--- a/src/engine/joinOrdering/GOO.cpp
+++ b/src/engine/joinOrdering/GOO.cpp
@@ -45,7 +45,19 @@ requires RelationAble<N>
   g.hist[n].push_back(b);
 
   // TODO: STL chain iterators
-  for (auto const& [x, e] : boost::join(g.edges_[a], g.edges_[b])) {
+  // boost::join(g.edges_[a], g.edges_[b])
+  for (auto const& [x, e] : g.edges_[a]) {
+    if (e.hidden || x == a || x == b) continue;
+    g.add_rjoin(n, x, e.weight, Direction::UNDIRECTED);
+
+    if (!g.is_common_neighbour(a, b, x)) continue;
+    // when the 2 relations to be combined have common neighbours
+    // multiply edge weights of newly combined relation
+    g.edges_[x][n].weight = g.edges_[a][x].weight * g.edges_[b][x].weight;
+    g.edges_[n][x].weight = g.edges_[a][x].weight * g.edges_[b][x].weight;
+  }
+
+  for (auto const& [x, e] : g.edges_[b]) {
     if (e.hidden || x == a || x == b) continue;
     g.add_rjoin(n, x, e.weight, Direction::UNDIRECTED);
 
diff --git a/src/engine/joinOrdering/GOO.h b/src/engine/joinOrdering/GOO.h
index 176f03fac3..24678c8c4d 100644
--- a/src/engine/joinOrdering/GOO.h
+++ b/src/engine/joinOrdering/GOO.h
@@ -5,8 +5,6 @@
 
 #pragma once
 
-#include <boost/range/join.hpp>
-
 #include "QueryGraph.h"
 
 namespace JoinOrdering {
diff --git a/src/engine/joinOrdering/IKKBZ.cpp b/src/engine/joinOrdering/IKKBZ.cpp
index 8196cd08dd..39037a72a7 100644
--- a/src/engine/joinOrdering/IKKBZ.cpp
+++ b/src/engine/joinOrdering/IKKBZ.cpp
@@ -111,7 +111,6 @@ std::vector<N> IKKBZ_Normalized(QueryGraph<N>& g, ICostASI<N>& Ch,
         // "precedence graph demands A -> B but rank(A) > rank(B),
         // we speak of contradictory sequences."
         // 118/637
-        //        if (ASI::rank(g, p) > ASI::rank(g, c)) {
         if (Ch.rank(g, p) > Ch.rank(g, c)) {
           // a new node representing compound relation
           IKKBZ_combine(g, p, c);