Code review comment for lp:~percona-toolkit-dev/percona-toolkit/pt-table-checksum-fails-on-BINARY-field-in-PK-1381280

PT tries to use "index" instead of "key" because it's a little more proper (CREATE INDEX, not CREATE KEY; --chunk-index; etc.), so I'd suggest --binary-index as the option name.

MySQL columns types are usually written as uppercase...