columns with not full loaded stats may display wrong column ID in EXPLAIN

[time-and-fate]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

create table t(a int, b int, c int, primary key(a), key idx(b));
insert into t values (1,1,1),(2,2,2),(3,3,3);
create table t2(a int, primary key(a));
insert into t2 values (1),(2),(3);
create table tp(a int, b int, c int, index ic(c)) partition by range(a) (partition p0 values less than (10),partition p1 values less than (20),partition p2 values less than maxvalue);
insert into tp values (1,1,1),(2,2,2),(13,13,13),(14,14,14),(25,25,25),(36,36,36);
analyze table t;
analyze table t2;
analyze table tp;
explain select * from tp;
explain select * from t1;
explain select * from t2;
set @@tidb_stats_load_sync_wait = 0;
explain format = brief select * from t join tp partition (p0) join t2 where t.a < 10 and t.b = tp.c and t2.a > 10 and t2.a = tp.c;

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

Correctly display the stats loading related information.

3. What did you see instead (Required)

Note the ID 8:allEvicted and ID 6:allEvicted in the plan. The column's ID with incomplete stats is wrong, so it fails to get the column name from the metadata and prints the column ID directly.

+-----------------------------------+---------+-----------+-----------------------+------------------------------------------------------------------------------------------------------------+
| id                                | estRows | task      | access object         | operator info                                                                                              |
+-----------------------------------+---------+-----------+-----------------------+------------------------------------------------------------------------------------------------------------+
| HashJoin                          | 0.33    | root      |                       | inner join, equal:[eq(test.tp.c, test.t2.a)]                                                               |
| ├─IndexJoin(Build)                | 0.33    | root      |                       | inner join, inner:IndexLookUp, outer key:test.t.b, inner key:test.tp.c, equal cond:eq(test.t.b, test.tp.c) |
| │ ├─TableReader(Build)            | 0.33    | root      |                       | data:Selection                                                                                             |
| │ │ └─Selection                   | 0.33    | cop[tikv] |                       | gt(test.t.b, 10), not(isnull(test.t.b))                                                                    |
| │ │   └─TableRangeScan            | 1.00    | cop[tikv] | table:t               | range:[-inf,10), keep order:false, stats:partial[idx:allEvicted, a:allEvicted, b:allEvicted]               |
| │ └─IndexLookUp(Probe)            | 0.33    | root      | partition:p0          |                                                                                                            |
| │   ├─Selection(Build)            | 0.33    | cop[tikv] |                       | gt(test.tp.c, 10), not(isnull(test.tp.c))                                                                  |
| │   │ └─IndexRangeScan            | 0.50    | cop[tikv] | table:tp, index:ic(c) | range: decided by [eq(test.tp.c, test.t.b)], keep order:false, stats:partial[ID 6:allEvicted]              |
| │   └─TableRowIDScan(Probe)       | 0.33    | cop[tikv] | table:tp              | keep order:false, stats:partial[ID 6:allEvicted]                                                           |
| └─TableReader(Probe)              | 1.00    | root      |                       | data:TableRangeScan                                                                                        |
|   └─TableRangeScan                | 1.00    | cop[tikv] | table:t2              | range:(10,+inf], keep order:false, stats:partial[a:allEvicted, ID 8:allEvicted]                            |
+-----------------------------------+---------+-----------+-----------------------+------------------------------------------------------------------------------------------------------------+

4. What is your TiDB version? (Required)

Affects from 7.1 to the current master (pre-v8.1)