SQL initcap on text[]

Question

I am trying to uppercase all the words in an array of text in my table:

update locations
set aka  = initcap(aka) 

But initcap() doesn't support text arrays. How can I achieve the same effect?

Answer 1

Cast to text and back:

UPDATE locations
SET    aka = initcap(aka::text)::text[]
WHERE  aka IS DISTINCT FROM initcap(aka::text)::text[];

But don't touch rows that wouldn't change, to make it cheaper. See:

• How do I (or can I) SELECT DISTINCT on multiple columns?

I assume you are aware the initcap() does not exactly "uppercase" strings. It...

Converts the first letter of each word to upper case and the rest to lower case.