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-rw-r--r--mysql-test/t/variables.test16
1 files changed, 16 insertions, 0 deletions
diff --git a/mysql-test/t/variables.test b/mysql-test/t/variables.test
index 7aa79f0eb40..771a4ad3ed3 100644
--- a/mysql-test/t/variables.test
+++ b/mysql-test/t/variables.test
@@ -302,6 +302,22 @@ set wait_timeout=100;
set log_warnings=1;
#
+# Bugs: #20392: INSERT_ID session variable has weird value
+#
+select @@session.insert_id;
+set @save_insert_id=@@session.insert_id;
+set session insert_id=20;
+select @@session.insert_id;
+
+set session last_insert_id=100;
+select @@session.insert_id;
+select @@session.last_insert_id;
+select @@session.insert_id;
+
+set @@session.insert_id=@save_insert_id;
+select @@session.insert_id;
+
+#
# key buffer
#