Sintaxe de CHECKSUM TABLE
Reports a table checksum. If QUICK is specified, live table checksum is reported, or NULL if the table does not support live checksum. This is very fast. In EXTENDED mode the whole table is read row by row and the checksum is calculated. This can be very slow for large tables. By default - with neither QUICK nor EXTENDED - MariaDB returns live checksum if the table support it and scans the table otherwise.
Este comando está implementado no MariaDB.