Usually our mysql queries are not case sensitive. In order to query case sensitive, you can use the mysql COLLATE clause.
The collate clause lets you specify a collation, which basically is a set of rules for comparing characters in a given character set.

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The suffixes ci, cs, bin of a collation stand for case insensitive, case sensitive and binary, respectively. A binary collation such as utf8_bin is case sensitive as well since it compares the characters based on their numeric values.

SELECT * FROM users WHERE name like 'cRaZy' COLLATE utf8_bin;