Describe the bug

After creating a link with a hyphen in the middle table name, EspoCRM can no longer rebuild the database

The App log contains the messages:

Error while rebuilding database. See log file for details.

and

Rebuild database error: An exception occurred while executing a query: SQLSTATE[42000]: Syntax error or access violation: 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 '-_mytablename (id BIGINT AUTO_INCREMENT NOT NULL, account_id VARCHAR(17) CHARACTE' at line 1

The error can be fixed by removing the relation.

To Reproduce (MANDATORY, DO NOT REMOVE)

Explicit steps to reproduce the behavior:

1. Create a many-to-many link.
2. Overwrite the "Middle Table Name" with a string containing a hyphen

Expected behavior

The table name gets rejected or actually works.

EspoCRM version

9.1.8