How can I make SQL case sensitive string comparison on MySQL?

Question

I have a function that returns five characters with mixed case. If I do a query on this string it will return the value regardless of case.

How can I make MySQL stri

Answer 1

Instead of using the = operator, you may want to use LIKE or LIKE BINARY

// this returns 1 (true)
select 'A' like 'a'

// this returns 0 (false)
select 'A' like binary 'a'


select * from user where username like binary 'a'

It will take 'a' and not 'A' in its condition