1 files changed, 25 insertions, 0 deletions
diff --git a/mysql-test/t/trigger_no_defaults-11698.test b/mysql-test/t/trigger_no_defaults-11698.test
new file mode 100644
index 00000000000..fab7845ad7d
--- /dev/null
+++ b/mysql-test/t/trigger_no_defaults-11698.test
@@ -0,0 +1,25 @@
+#
+# MDEV-11698 Old Bug possibly not fixed; BEFORE INSERT Trigger on NOT NULL
+#
+set sql_mode='strict_all_tables';
+create table t1 (a int not null, b int);
+--error ER_NO_DEFAULT_FOR_FIELD
+insert t1 (b) values (1);
+delimiter |;
+create trigger trgi before insert on t1 for each row
+  case new.b
+  when 10 then
+    set new.a = new.b;
+  when 30 then
+    set new.a = new.a;
+  else
+    do 1;
+  end case|
+delimiter ;|
+insert t1 (b) values (10);
+--error ER_NO_DEFAULT_FOR_FIELD
+insert t1 (b) values (20);
+# arguably the statement below should fail too
+insert t1 (b) values (30);
+select * from t1;
+drop table t1;