inl_join hints has wrong warrings in the cte query block

[Damon-Guo]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

CREATE TABLE t_employees  (
    id INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
    fname VARCHAR(25) NOT NULL,
    lname VARCHAR(25) NOT NULL,
    store_id INT NOT NULL,
    department_id INT NOT NULL
);
alter table t_employees add index idx(department_id);

explain 
with t as (select  /*+ inl_join(e) */em.* from t_employees em join t_employees e where em.store_id=e.department_id )
select * from t ;

The hint is worked, but it has some wrong warnings.

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

id                     |estRows |task     |access object                    |operator info                                                                                                                                                                            |
-----------------------+--------+---------+---------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
IndexJoin_16           |12500.00|root     |                                 |inner join, inner:IndexReader_15, outer key:test.t_employees.store_id, inner key:test.t_employees.department_id, equal cond:eq(test.t_employees.store_id, test.t_employees.department_id)|
├─TableReader_24(Build)|10000.00|root     |                                 |data:TableFullScan_23                                                                                                                                                                    |
│ └─TableFullScan_23   |10000.00|cop[tikv]|table:em                         |keep order:false, stats:pseudo                                                                                                                                                           |
└─IndexReader_15(Probe)|12500.00|root     |                                 |index:IndexRangeScan_14                                                                                                                                                                  |
  └─IndexRangeScan_14  |12500.00|cop[tikv]|table:e, index:idx(department_id)|range: decided by [eq(test.t_employees.department_id, test.t_employees.store_id)], keep order:false, stats:pseudo                                                                        |

the explain use index join without warnings.

3. What did you see instead (Required)

id                     |estRows |task     |access object                    |operator info                                                                                                                                                                            |
-----------------------+--------+---------+---------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
IndexJoin_16           |12500.00|root     |                                 |inner join, inner:IndexReader_15, outer key:test.t_employees.store_id, inner key:test.t_employees.department_id, equal cond:eq(test.t_employees.store_id, test.t_employees.department_id)|
├─TableReader_24(Build)|10000.00|root     |                                 |data:TableFullScan_23                                                                                                                                                                    |
│ └─TableFullScan_23   |10000.00|cop[tikv]|table:em                         |keep order:false, stats:pseudo                                                                                                                                                           |
└─IndexReader_15(Probe)|12500.00|root     |                                 |index:IndexRangeScan_14                                                                                                                                                                  |
  └─IndexRangeScan_14  |12500.00|cop[tikv]|table:e, index:idx(department_id)|range: decided by [eq(test.t_employees.department_id, test.t_employees.store_id)], keep order:false, stats:pseudo                                                                        |

the explain use index join with warnings
There are no matching table names for (e) in optimizer hint /*+ INL_JOIN(e, e) / or /+ TIDB_INLJ(e, e) */. Maybe you can use the table alias name

4. What is your TiDB version? (Required)

Release Version: v8.1.0
Edition: Community
Git Commit Hash: 945d07c
Git Branch: HEAD
UTC Build Time: 2024-05-21 03:51:57
GoVersion: go1.21.10
Race Enabled: false
Check Table Before Drop: false
Store: tikv

[hawkingrei]

the same as #53454

[Damon-Guo]

I think it is not same as #53454 , the hint of inl_join is not worked in issue #53454 ，but it works in this issue