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-rw-r--r--mysql-test/suite/versioning/t/alter.test12
1 files changed, 12 insertions, 0 deletions
diff --git a/mysql-test/suite/versioning/t/alter.test b/mysql-test/suite/versioning/t/alter.test
index 03c821a2254..83c3e911fad 100644
--- a/mysql-test/suite/versioning/t/alter.test
+++ b/mysql-test/suite/versioning/t/alter.test
@@ -581,3 +581,15 @@ alter table t
change column b b int without system versioning;
drop table t;
+
+--echo #
+--echo # MDEV-21688 Assertion or ER_WARN_DATA_OUT_OF_RANGE upon ALTER on previously versioned table
+--echo #
+create or replace table t1 (a int) with system versioning;
+insert into t1 values (128);
+delete from t1;
+set statement system_versioning_alter_history=keep for
+alter table t1 drop system versioning, modify column a tinyint;
+
+# cleanup
+drop table t1;