Oracle - Select where field has lowercase characters

Question

I have a table, users, in an Oracle 9.2.0.6 database. Two of the fields are varchar - last_name and first_name.

When rows are inserted into this table, the first name a

Answer 1

for SQL server where the DB collation setting is Case insensitive use the following:

SELECT * FROM tbl_user WHERE LEFT(username,1) COLLATE Latin1_General_CS_AI <> UPPER(LEFT(username,1))