I ran the same tests in SQL Server 2008R2, Oracle10 and PostgreSQL
9.0.4 and found something interesting...
set up
=====
drop table t1
create table t1 (f1 varchar(100))
insert into t1 (f1) values ('AbC')
insert into t1 (f1) values ('CdE')
insert into t1 (f1) values ('abc')
insert into t1 (f1) values ('ABc')
insert into t1 (f1) values ('cde')
test
===
select * from t1 order by f1
select min(f1) as min, max(f1) as max from t1
results
=====
SQL Server 2008 R2 (with case insensitive data, the ordering follows
ASCII order)
f1
---
AbC
abc
ABc
cde
CdE
min max
------ -------
AbC CdE
Oracle 10 (data is case-sensitive, the ordering follows ASCII order)
f1
---
ABc
AbC
CdE
abc
cde
min max
------ -------
ABc cde
PostgreSQL 9.0.4 (data is case-sensitive, the ordering is ...
DIFFERENT)
f1
---
abc
AbC
ABc
cde
CdE
min max
------ -------
abc CdE
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