MariaDB / MySQL querys are case sensitive?

Question

I just want to know if that querys are case sensitive or not. Are the same these querys?

SELECT * FROM Users WHERE login="john";
SELECT * FROM Users WHERE login="John";
SELECT * FROM Users WHERE login="JOHN";
SELECT * FROM Users WHERE login="jOHn";

I have tried that on my console and all of them worked, but I want to be sure of that if I would use Hibernate or anything else.

Thanks!

Answer 1

According to the MySQL docs ,

The default character set and collation are latin1 and latin1_swedish_ci, so nonbinary string comparisons are case insensitive by default

As to the second part of you question - this SO answer shows you how to configure to have the searchers be case sensitive.

Answer 2

Just an example from my Linux ( Debian 10 ) Box in MariaDB (Ver.10.3.18-MariaDB-0+deb10u1 ).May be helpful for someone !!

MariaDB [niffdb]> select * from account_heads where head_desc="Fuel";
+---------+-----------+
| head_id | head_desc |
+---------+-----------+
|       1 | Fuel      |
+---------+-----------+
1 row in set (0.004 sec)

MariaDB [niffdb]> select * from account_heads where head_desc="FUEL";
+---------+-----------+
| head_id | head_desc |
+---------+-----------+
|       1 | Fuel      |
+---------+-----------+
1 row in set (0.001 sec)

MariaDB [niffdb]> select * from account_heads where head_desc="fUEL";
+---------+-----------+
| head_id | head_desc |
+---------+-----------+
|       1 | Fuel      |
+---------+-----------+
1 row in set (0.001 sec)

MariaDB [niffdb]>

Answer 3

From MariaDB docs , it depends on OS. For Windows, it's not case-sensitive. For Linux, Database, table, table aliases and trigger names are affected by the systems case-sensitivity, while index, column, column aliases, stored routine and event names are never case sensitive.