1 files changed, 60 insertions, 0 deletions
diff --git a/mysql-test/main/join_outer.test b/mysql-test/main/join_outer.test
index 6d20c089bd9..82127397bee 100644
--- a/mysql-test/main/join_outer.test
+++ b/mysql-test/main/join_outer.test
@@ -2042,4 +2042,64 @@ DROP TABLE t1,t2;
 
 --echo # end of 5.5 tests
 
+--echo #
+--echo # MDEV-17518: Range optimization doesn't use ON expressions from nested outer joins
+--echo #
+create table t1(a int);
+insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
+
+create table t2(a int);
+insert into t2 values (0),(1);
+
+create table t3 (a int, b int, key(a));
+insert into t3 select A.a + B.a* 10 + C.a * 100, 12345 from t1 A, t1 B, t1 C;
+
+--echo # Uses range for table t3:
+explain select * from t1 left join t3 on t1.a=t3.b and t3.a<5;
+
+--echo # This must use range for table t3, too:
+explain select * from t1 left join (t3 join t2) on t1.a=t3.b and t3.a<5;
+
+--echo #
+--echo # .. part 2: make sure condition selectivity can use the condition too.
+--echo #
+alter table t3 drop key a;
+set @tmp1=@@optimizer_use_condition_selectivity;
+set @tmp2=@@use_stat_tables;
+set @tmp3=@@histogram_size;
+set use_stat_tables=preferably;
+set optimizer_use_condition_selectivity=4;
+set histogram_size=100;
+
+analyze table t3 persistent for all;
+
+--echo # t3.filtered is less than 100%:
+explain extended select * from t1 left join t3 on t1.a=t3.b and t3.a<5;
+
+--echo # t3.filtered must less than 100%, too:
+explain extended select * from t1 left join (t3 join t2) on t1.a=t3.b and t3.a<5;
+
+drop table t1,t2,t3;
+set optimizer_use_condition_selectivity= @tmp1;
+set use_stat_tables= @tmp2;
+set histogram_size= @tmp3;
+
+--echo # Another test
+CREATE TABLE t1 (i1 int) ;
+CREATE TABLE t2 (pk int NOT NULL PRIMARY KEY) ;
+CREATE TABLE t3 (pk int NOT NULL, i1 int, PRIMARY KEY (pk)) ;
+INSERT INTO t3 VALUES (2, NULL);
+
+CREATE TABLE t4 (pk int NOT NULL, i1 int, PRIMARY KEY (pk), KEY i1 (i1)) ;
+CREATE VIEW v4 AS SELECT * FROM t4;
+
+SELECT 1
+FROM t3 RIGHT JOIN t1 ON t3.i1 = t1.i1
+  LEFT JOIN v4
+  RIGHT JOIN t2 ON v4.i1 = t2.pk ON t1.i1 = t2.pk
+WHERE t3.pk IN (2);
+
+drop view v4;
+drop table t1,t2,t3,t4;
+
 SET optimizer_switch=@save_optimizer_switch;