Checking if all tables can be checksummed ...
Starting checksum ...
--
-- test.ascii
--

REPLACE INTO `percona`.`checksums` (db, tbl, chunk, chunk_index, lower_boundary, upper_boundary, this_cnt, this_crc) SELECT ?, ?, ?, ?, ?, ?, COUNT(*) AS cnt, COALESCE(LOWER(CONV(BIT_XOR(CAST(CRC32(CONCAT_WS('#', `i`, convert(`c` using utf8mb4))) AS UNSIGNED)), 10, 16)), 0) AS crc FROM `test`.`ascii` FORCE INDEX(`c`) WHERE ((`c` >= ?)) AND ((`c` <= ?)) /*checksum chunk*/

REPLACE INTO `percona`.`checksums` (db, tbl, chunk, chunk_index, lower_boundary, upper_boundary, this_cnt, this_crc) SELECT ?, ?, ?, ?, ?, ?, COUNT(*), '0' FROM `test`.`ascii` FORCE INDEX(`c`) WHERE ((`c` < ?)) ORDER BY `c` /*past lower chunk*/

REPLACE INTO `percona`.`checksums` (db, tbl, chunk, chunk_index, lower_boundary, upper_boundary, this_cnt, this_crc) SELECT ?, ?, ?, ?, ?, ?, COUNT(*), '0' FROM `test`.`ascii` FORCE INDEX(`c`) WHERE ((`c` > ?)) ORDER BY `c` /*past upper chunk*/

SELECT /*!40001 SQL_NO_CACHE */ `c` FROM `test`.`ascii` FORCE INDEX(`c`) WHERE ((`c` >= ?)) ORDER BY `c` LIMIT ?, 2 /*next chunk boundary*/

1  burt
2 Cameron Frances
3 Fred jane
4 jayne kirk
5 Kirsten Mr. Rogers
6 Natalie Sean
7 sidney Zesus!
8 Zesus!! ZESUS!!!
9  
10 ZESUS!!! 

