Doug Kline explains the ANY and ALL operators in SQL:
-- note that this creates a single column of values -- which could be used in something like IN -- for example SELECT 1 WHERE 12 IN ( SELECT tempField FROM (VALUES(11),(12),(7)) tempTable(tempField)) -- I could rephrase this as: SELECT 1 WHERE 12 = ANY ( SELECT tempField FROM (VALUES(11),(12),(7)) tempTable(tempField))
I rarely see these operators in the wild and might have used them in production code a couple of times if that.