Re; #1, I also use comma-first indenting and I actually put each field in it's own line specifically for ease in commenting (first_name would have its own line)
Re:SQL style guide
by Treffynnon on Monday October 10, 2016 @02:32AM
(#12675420)
This doesn't solve the problem at hand either unfortunately. You'll still have a hanging comma in front of `last_name`:
SELECT
-- first_name
, last_name
, email_address
FROM users
When parsed it will look like this query error to the system: SELECT
, last_name
, email_address
FROM users
1. putting the comma before doesn't actually make commenting out columns easier - it just moves the problem to the other end of the list. Just try commenting out `first_name` in your example and you'll see what I mean.
2. because normal convention would be for the comma to come immediately after an item in written English.