diff --git a/mysql-test/r/subselect_innodb.result b/mysql-test/r/subselect_innodb.result
index 06cfb8b45d2..f92615f22cf 100644
--- a/mysql-test/r/subselect_innodb.result
+++ b/mysql-test/r/subselect_innodb.result
@@ -469,3 +469,17 @@ f1	f2
 set join_cache_level = default;
 drop view v1;
 drop table t1,t2;
+#
+# MDEV-10693: cost-based choice between materialization and in-to-exists
+#             for a subquery from the expression used in ref access 
+#
+CREATE TABLE t1 (i1 INT PRIMARY KEY) ENGINE=InnoDB;
+INSERT INTO t1 VALUES (1),(2);
+CREATE TABLE t2 (i2 INT) ENGINE=InnoDB;
+CREATE TABLE t3 (i3 INT PRIMARY KEY) ENGINE=InnoDB;
+INSERT INTO t3 VALUES (3);
+SELECT * FROM t1
+WHERE NULL IN ( SELECT i2 FROM t2 
+WHERE i1 IN ( i2 IN ( SELECT i3 FROM t3 ) ) AND i2 = 2 );
+i1
+DROP TABLE t1,t2,t3;
diff --git a/mysql-test/t/subselect_innodb.test b/mysql-test/t/subselect_innodb.test
index d764c435c82..3945c6b10b9 100644
--- a/mysql-test/t/subselect_innodb.test
+++ b/mysql-test/t/subselect_innodb.test
@@ -453,3 +453,25 @@ SELECT * FROM v1, t2 WHERE ( f1, f2 ) IN ( SELECT f1, f1 FROM t1 );
 set join_cache_level = default;
 drop view v1;
 drop table t1,t2;
+
+--echo #
+--echo # MDEV-10693: cost-based choice between materialization and in-to-exists
+--echo #             for a subquery from the expression used in ref access 
+--echo #
+
+--source include/have_innodb.inc
+ 
+CREATE TABLE t1 (i1 INT PRIMARY KEY) ENGINE=InnoDB;
+INSERT INTO t1 VALUES (1),(2);
+ 
+CREATE TABLE t2 (i2 INT) ENGINE=InnoDB;
+ 
+CREATE TABLE t3 (i3 INT PRIMARY KEY) ENGINE=InnoDB;
+INSERT INTO t3 VALUES (3);
+ 
+SELECT * FROM t1
+  WHERE NULL IN ( SELECT i2 FROM t2 
+                    WHERE i1 IN ( i2 IN ( SELECT i3 FROM t3 ) ) AND i2 = 2 );
+
+DROP TABLE t1,t2,t3;
+
diff --git a/sql/sql_select.cc b/sql/sql_select.cc
index d83e8e2bfce..c5f2a83fc01 100644
--- a/sql/sql_select.cc
+++ b/sql/sql_select.cc
@@ -7728,8 +7728,6 @@ get_best_combination(JOIN *join)
   join->full_join=0;
   join->hash_join= FALSE;
 
-  used_tables= OUTER_REF_TABLE_BIT;		// Outer row is already read
-
   fix_semijoin_strategies_for_picked_join_order(join);
   
   JOIN_TAB_RANGE *root_range;
@@ -7791,7 +7789,6 @@ get_best_combination(JOIN *join)
     j->bush_root_tab= sjm_nest_root;
 
     form=join->table[tablenr]=j->table;
-    used_tables|= form->map;
     form->reginfo.join_tab=j;
     DBUG_PRINT("info",("type: %d", j->type));
     if (j->type == JT_CONST)
@@ -7818,9 +7815,6 @@ get_best_combination(JOIN *join)
                              join->best_positions[tablenr].loosescan_picker.loosescan_key);
       j->index= join->best_positions[tablenr].loosescan_picker.loosescan_key;
     }*/
-    
-    if (keyuse && create_ref_for_key(join, j, keyuse, TRUE, used_tables))
-      DBUG_RETURN(TRUE);                        // Something went wrong
 
     if ((j->type == JT_REF || j->type == JT_EQ_REF) &&
         is_hash_join_key_no(j->ref.key))
@@ -7845,6 +7839,21 @@ get_best_combination(JOIN *join)
   }
   root_range->end= j;
 
+  used_tables= OUTER_REF_TABLE_BIT;		// Outer row is already read
+  for (j=join_tab, tablenr=0 ; tablenr < table_count ; tablenr++,j++)
+  {
+    if (j->bush_children)
+      j= j->bush_children->start;
+      
+    used_tables|= j->table->map;
+    if ((keyuse= join->best_positions[tablenr].key) &&
+        create_ref_for_key(join, j, keyuse, TRUE, used_tables))
+     DBUG_RETURN(TRUE);              // Something went wrong
+
+    if (j->last_leaf_in_bush)
+      j= j->bush_root_tab;
+  }
+ 
   join->top_join_tab_count= join->join_tab_ranges.head()->end - 
                             join->join_tab_ranges.head()->start;
   /*