SHOW ERRORS returns only one reported error

[qiancai]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

https://docs.pingcap.com/zh/tidb/v6.0/sql-statement-show-errors

tidb> select invalid;
ERROR 1054 (42S22): Unknown column 'invalid' in 'field list'
tidb> create invalid;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your TiDB version for the right syntax to use line 1 column 14 near "invalid"
tidb> SHOW ERRORS;

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

mysql> SHOW ERRORS;
+-------+------+-----------------------------------------------------------------------------------------------------------------------------------------------------------+
| Level | Code | Message |
+-------+------+-----------------------------------------------------------------------------------------------------------------------------------------------------------+
| Error | 1064 | You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'invalid' at line 1 |
+-------+------+-----------------------------------------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.02 sec)

3. What did you see instead (Required)

+-------+------+------------------------------------------+
| Level | Code | Message |
+-------+------+------------------------------------------+
| Error | 1054 | Unknown column 'invalid' in 'field list' |
+-------+------+------------------------------------------+
1 row in set (0.00 sec)

4. What is your TiDB version? (Required)

5.7.25-TiDB-v6.0.0