Special symbols (comma, period) appear in mysql table, how to query or operate

1. Background description

When a period (.), comma (,) or other special symbols appear in the mysql table name, and the table name cannot be queried directly and the operation cannot be performed, as shown below

2. The table needs to be "quoted". The button above the tab key is not a quotation mark.

SELECT * FROM `JHDL_10_DBO.TBLPATIENT`