A insert or replace to add a number to sql entry.

insert_or_update.text

insert or replace into office 
	values 
		(124567, 
			(select
				case
					when (select exists(select 1 from office where sku = 124567))
					then (select count from office where sku = 124567) 
					when 1 then 0 
				end
			) + 1
		)