I just found some strange behavior of database's "order by" clause. In string comparison, I expected some characters such as '[' and '_' are greater than latin characters such as 'i' considering their orders in the ASCII table. However, the sorting results from database's "order by" clause is different with my expectation. Here's my test:

SQLite version 3.6.23
Enter ".help" for instructions
Enter SQL statements terminated with a ";"
sqlite> create table products(name varchar(10));
sqlite> insert into products values('ipod');
sqlite> insert into products values('iphone');
sqlite> insert into products values('[apple]');
sqlite> insert into products values('_ipad');
sqlite> select * from products order by name asc;
[apple]
_ipad
iphone
ipod

This behavior is different from Java's string comparison (which cost me some time to find this issue). I can verify this in both SQLite 3.6.23 and Microsoft SQL Server 2005. I did some web search but cannot find any related documentation. Could someone shed me some light on it? Is it a SQL standard? Where can I find some information about this? Thanks in advance.