Bug #78733 CHECKSUM PARTITION

Description:
CHECKSUM TABLE my_partitioned_table EXTENDED now returns one number.

It would be nice if I could do CHECKSUM PARTITIONS my_partitioned_table which then would show a per partition checksum, making it easier and more useful for situations where:
 - There is just one partition with has wrong data (e.g. after table copy to another server). Then that partition can be recopied to fix the issue.
 - When the table as one constantly changing active partition. Then the 'old' partitions can be checked more easily.

How to repeat:
See Description.

Work around for a table with 32 partitions:
for i in {0..31}; do echo "p${i}"; sudo mysql mydb -BNe "SELECT * FROM mytable1 PARTITION(p${i})" | md5sum; done | tee checksum.txt

Then the checksum.txt from source and target can be compared.

Posted by developer:
 
Reported version value updated to reflect release name change from 5.8 to 8.0