I just don't understand people's preference to write part of their SQL in UPPER CASE. "Keywords should be in UPPER CASE (for readability)". And the they write

SELECT trim(name), tan(val), cot(val)
FROM foo
WHERE foo_type IN ('X', 'Y', 'Z')
AND length(trim(name)) > 10

So it's only specific keywords which we need to shout? And are we talking about SQL standard keywords, or keywords in any dialect? https://en.wikipedia.org/wiki/List_of_SQL_reserved_words

New book to read has arrived:
@baldur 's "Out of the Software Crisis"