1 files changed, 17 insertions, 0 deletions
diff --git a/mysql-test/main/subselect_sj.test b/mysql-test/main/subselect_sj.test
index 324f2828de2..c869f56c837 100644
--- a/mysql-test/main/subselect_sj.test
+++ b/mysql-test/main/subselect_sj.test
@@ -3018,5 +3018,22 @@ EXECUTE stmt;
  
 DROP TABLE t1, t2;
 
+--echo #
+--echo # MDEV-28871: Assert ... failed in JOIN::dbug_verify_sj_inner_tables with low optimizer_search_depth
+--echo #
+set @tmp_28871=@@optimizer_search_depth;
+CREATE TABLE t1 (a INT);
+CREATE TABLE t2 (b INT);
+ 
+# Data is optional, fails either way
+INSERT INTO t1 VALUES (1),(2);
+INSERT INTO t1 VALUES (3),(4);
+ 
+SET optimizer_search_depth= 1;
+ 
+SELECT * FROM t1 WHERE a IN (SELECT b FROM t2 JOIN t1);
+DROP TABLE t1, t2;
+set optimizer_search_depth= @tmp_28871;
+
 # The following command must be the last one the file 
 set optimizer_switch=@subselect_sj_tmp;