Can't find a proper physical plan for this query

[djshow832]

Bug Report

The query reports "Can't find a proper physical plan for this query", but it should be executed successfully.

1. Minimal reproduce step (Required)

mysql> create table tbl(n1 varbinary(1024), n2 varbinary(1024), n3 bigint(20), n4 mediumblob, primary key(n1, n2, n3));
Query OK, 0 rows affected (0.00 sec)

mysql> prepare stmt from 'select * from tbl where n1=? and n2>=? and n2<=?';
Query OK, 0 rows affected (0.00 sec)

mysql> set @a='0000', @b='9999';
Query OK, 0 rows affected (0.00 sec)

mysql> execute stmt using @a, @b, @a;
ERROR 1815 (HY000): Internal : Can't find a proper physical plan for this query

2. What did you expect to see? (Required)

Returns empty result.

3. What did you see instead (Required)

ERROR 1815 (HY000): Internal : Can't find a proper physical plan for this query

4. What is your TiDB version? (Required)

master.

[ti-srebot]

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