xistent table, CHECKSUM TABLE returns NULL and generates a\nwarning.\n\nDuring the checksum operation, the table is locked with a read lock for\nInnoDB and MyISAM.\n\nURL: https://dev.mysql.com/doc/refman/8.0/en/checksum-table.html\n\n','','https://dev.mysql.com/doc/refman/8.0/en/checksum-table.html');