Where binary in SQL

https://dev.mysql.com/doc/refman/8.0/en/cast-functions.html#operator_binary

The BINARY operator casts the string following it to a binary string. This is an easy way to force a comparison to be done byte by byte rather than character by character. BINARY also causes trailing spaces to be significant.

SELECT 'user' = 'UsEr' // true
SELECT BINARY 'user' = 'UsEr' // false

BINARY is a built-in keyword that after your WHERE clause that forces a comparison for an exact case-sensitive match.

As a side note, you can also make columns case-sensitive by adding the BINARY keyword when you create your table.