Selecting all records which are in upper case

Hello

I have a simple table 'location' :
id -> Int (associated with a sequence)
name -> Character varying (100)

I have to delete all records where values in name field are all in upper
case. For example, if the test data is as follows:

id name
1 abccvvvv
2 Abc dsase
3 CDF FDER
4 Amcddd FFR
5 EE DFEW
6 Sedcd

Only reecords #3 and #5 are to be deleted. The closest I could reach was
this:
"delete from location where (ascii(substring(name from 1 for 1)) between 65
and 90) and (ascii(substring(name from char_length(name) for 1)) between 65
and 90)"
The problem with this query is it would also delete record #4.

How do I get it to select only those records in which all characters are in
uppercase?

Amitabh