Hi! Thanks for the patch!
diff --git a/test/sql/drop-table.result b/test/sql/drop-table.result
index 08f249668..bf02e3def 100644
--- a/test/sql/drop-table.result
+++ b/test/sql/drop-table.result
@@ -29,6 +29,23 @@ box.sql.execute("INSERT INTO zzzoobar VALUES (111, 222, 'c3',
444)")
---
- error: 'no such table: ZZZOOBAR'
...
+-- gh-3712: if space features sequence, data from _sequence_data
+-- must be deleted before space is dropped.
+--
+box.sql.execute("CREATE TABLE t1 (id INT PRIMARY KEY AUTOINCREMENT);")
+---
+...
+box.sql.execute("INSERT INTO t1 VALUES (NULL);")
+---
+...
+box.snapshot()
+---
+- ok
+...
+test_run:cmd('restart server default')
+box.sql.execute("DROP TABLE t1;")
+---
+...
-- Cleanup
-- DROP TABLE should do the job
-- Debug