Muhammad Shidiq isogram

Catch hashtag exclude starting and ending with underscore
(?:\s|^)(?:#(?!(?:\d+|\w+?_|_\w+?)(?:\s|$)))(\w+)(?=\s|$)
Catch hashtag include starting and ending with underscore
(?:\s|^)(?:#(?!\d+(?:\s|$)))(\w+)(?=\s|$)
Catch repeating words (only catch 1 if duplicate) (?!.*\b\1\b)

You can test regex at https://regex101.com/

	SELECT
	t1.user_id,
	t1.user_uuid,
	t1.first_name,
	t1.last_name,
	t1.user_name,
	IF (t2.follow_status, 1, 0) AS is_following,
	IF (t3.follow_status, 1, 0) AS is_followers
	FROM
	t_user t1

	# SYNTAX:

	var pattern = new RegExp(pattern, attributes); # attributes: g (global); i (case-sensitive); m (multiline matches)
	var pattern = /pattern/attributes; # same as above


	# BRACKETS:

	[...]: Any one character between the brackets.
	[^...]: Any one character not between the brackets.

	user nginx;
	worker_processes 1;

	error_log /var/log/nginx/error.log;
	pid /var/run/nginx.pid;

	events {
	worker_connections 1024;
	use epoll;
	}

	#301 Redirects for .htaccess

	#Redirect a single page:
	Redirect 301 /pagename.php http://www.domain.com/pagename.html

	#Redirect an entire site:
	Redirect 301 / http://www.domain.com/

	#Redirect an entire site to a sub folder
	Redirect 301 / http://www.domain.com/subfolder/

	# Minute Hour Day of Month Month Day of Week Command
	# (0-59) (0-23) (1-31) (1-12 or Jan-Dec) (0-6 or Sun-Sat)
	5 8 * * Sat /usr/bin/find