Reserved Keywords in Salesforce

Total Number of  Reserved Keywords-130

abstract	global	private
activate*	goto*	protected
and	group*	public
any*	having*	retrieve*
array	hint*	return
as	if	returning*
asc	implements	rollback
autonomous*	import*	savepoint
begin*	inner*	search*
bigdecimal*	insert	select
blob	instanceof	set
break	interface	short*
bulk	into*	sort
by	int	stat*
byte*	join*	super
case*	last_90_days	switch*
cast*	last_month	synchronized*
catch	last_n_days	system
char*	last_week	testmethod
class	like	then*
collect*	limit	this
commit	list	this_month*
const*	long	this_week
continue	loop*	throw
convertcurrency	map	today
decimal	merge	tolabel
default*	new	tomorrow
delete	next_90_days	transaction*
desc	next_month	trigger
do	next_n_days	true
else	next_week	try
end*	not	type*
enum	null	undelete
exception	nulls	update
exit*	number*	upsert
export*	object*	using
extends	of*	virtual
false	on	webservice
final	or	when*
finally	outer*	where
float*	override	while
for	package	yesterday
from	parallel*
future	pragma*

Note:

               Keywords marked with an asterisk (*) are reserved for future use.

The following are special types of keywords that aren't reserved words and can be used as identifiers.

• after
• before
• count
• excludes
• first
• includes
• last
• order
• sharing
• with