1 files changed, 22 insertions, 0 deletions
diff --git a/mysql-test/t/order_by_innodb.test b/mysql-test/t/order_by_innodb.test
index 97c043b8dbc..af12644c073 100644
--- a/mysql-test/t/order_by_innodb.test
+++ b/mysql-test/t/order_by_innodb.test
@@ -184,6 +184,28 @@ from
                  order by
                    dd.d1 desc, dd.d2 desc, dd.id desc limit 1
                 );
+
+--echo #
+--echo # MDEV-27270: Wrong query plan with Range Checked for Each Record and ORDER BY ... LIMIT
+--echo #
+
+--echo # This must NOT have "Range checked for each record" without any
+--echo #   provisions to produce rows in the required ordering:
+--replace_column 9 #
+explain
+select
+  t1.id,t2.id
+from
+  t1 left join
+  t2 on t2.id2 = t1.id and
+        t2.id = (select dd.id
+                 from t2 dd
+                 where
+                    dd.id2 = t1.id and
+                    d1 > '2019-02-06 00:00:00'
+                 order by
+                   dd.d1, dd.d2, dd.id limit 1
+                );
 drop table t1,t2;
 
 --echo # End of 10.2 tests