MySQL Reference Manual for version 4.0.18.

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13.5.2.4 CHECKSUM TABLE Syntax

 
CHECKSUM TABLE tbl_name[,tbl_name ...] [ QUICK | EXTENDED ]

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 - MySQL returns live checksum if the table support it and scans the table otherwise.

This statement is implemented in MySQL 4.1.1.



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