Bug #98068 SELECT FOR UPDATE not-exist table in PERFORMANCE SCHEMA reports confusing error
Submitted: 25 Dec 2019 7:09 Modified: 12 Feb 19:03
Reporter: William ZHANG Email Updates:
Status: Closed Impact on me:
None 
Category:MySQL Server: Data Dictionary Severity:S3 (Non-critical)
Version:8.0.18, 8.0.11 OS:Ubuntu (19.10.1)
Assigned to: Marc ALFF CPU Architecture:x86
Tags: regression

[25 Dec 2019 7:09] William ZHANG
Description:
Set current database to performance_schema, and select a not-exist table for update, the error message is:

ERROR 1142 (42000): SELECT with locking clause command denied to user 'root'@'localhost' for table 'not_exist_table'

which should be,

ERROR 1146 (42S02): Table 'performance_schema.not_exist_table' doesn't exist

If set current database to information_schema, then do the same selects, the error message is different. 

How to repeat:
$ sudo mysql -uroot test
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 10
Server version: 8.0.18-0ubuntu0.19.10.1 (Ubuntu)

Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> select * from not_exist_table;
ERROR 1146 (42S02): Table 'test.not_exist_table' doesn't exist

mysql> select * from not_exist_table for update;
ERROR 1146 (42S02): Table 'test.not_exist_table' doesn't exist

mysql> use performance_schema;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
mysql> 
mysql> select * from not_exist_table;
ERROR 1146 (42S02): Table 'performance_schema.not_exist_table' doesn't exist.   ===> EXPECTED

mysql> select * from not_exist_table for update;
ERROR 1142 (42000): SELECT with locking clause command denied to user 'root'@'localhost' for table 'not_exist_table'                                                                                                               ===> NOT EXPECTED

mysql> use information_schema;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
mysql> select * from not_exist_table;
ERROR 1109 (42S02): Unknown table 'NOT_EXIST_TABLE' in information_schema. ===> EXPECTED?

mysql> select * from not_exist_table for update;
ERROR 1109 (42S02): Unknown table 'NOT_EXIST_TABLE' in information_schema. ===> EXPECTED?

Suggested fix:
1. Fix the error message as sth. like 

ERROR 1146 (42S02): Table 'performance_schema.not_exist_table' doesn't exist.

2. Make sure the error messages are consistent whether current database is performance_schema or not.
[26 Dec 2019 7:15] MySQL Verification Team
Hello William,

Thank you for the report.

Thanks,
Umesh
[12 Feb 19:03] Paul DuBois
Posted by developer:
 
Fixed in 8.0.24.

SELECT ... FOR UPDATE from a nonexistent Performance Schema table
produced ER_TABLEACCESS_DENIED_ERROR rather than ER_NO_SUCH_TABLE.