You can get AppleCare+ in the U.S. for $149/year which is just as good (or better) than any warranty.
UPDATE my_table
SET x = file1.x,
y = file2.y
FROM 'first_file.csv' file1
LEFT JOIN 's3://my_bucket/second_file.parquet' file2
ON file1.id = file2.id
WHERE mytable.id = file1.id;