Question

let’s said table A create with definition keyword varchar(255) collate latin1_general_cs with index create on it

table B create with definition keyword varchar(255) collate latin1_general_ci,

both insert same set of data

and perform the same set of query
select * from my_table where keyword='apple'

will query to table A faster than table B?

any benchmark results can show the differences (or there is no difference at all)

Answer 1

Testing is the only way to be sure, but being case insensitive (ci) means matching more records so my inclination is that case sensitive is better performing.