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

If you are looking for Oracle 10g or higher you can use the below example. Consider that you need to find out the rows where the any of the letter in a column is lowercase.

Column1
.......
MISS
miss
MiSS

In the above example, if you need to find the values miss and MiSS, then you could use the below query

SELECT * FROM YOU_TABLE WHERE REGEXP_LIKE(COLUMN1,'[a-z]');