以下のキーワードは、複合イベント処理言語では予約語となっており、イベントストリーム名（イベントタイプ）として利用することができません。
*の付いているものは、イベントのプロパティ名としての利用が可能です。
after | else | is | not | set |
all | end | istream | null | snapshot (*) |
and | escape (*) | join (*) | offset | some |
any | events (*) | last (*) | on | sql (*) |
as | every (*) | lastweekday (*) | or | start |
asc | every-distinct | left (*) | order | stddev (*) |
at (*) | exists | like | outer (*) | sum (*) |
avedev (*) | expression | limit | output | terminated |
avg (*) | false | match_recognize | partition (*) | then |
between | first (*) | matched (*) | pattern (*) | true |
by | for | matches (*) | prev (*) | typeof (*) |
case | from | max (*) | prevcount | unidirectional (*) |
cast (*) | full (*) | measures | prevtail (*) | until (*) |
coalesce (*) | group | median (*) | prevwindow | update |
context | having | merge (*) | prior (*) | using |
count (*) | hour | metadatasql (*) | regexp | variable (*) |
create | hours | millisecond | retain-intersection (*) | week |
current_timestamp | in | milliseconds | retain-union (*) | weekday (*) |
dataflow | index (*) | min | right | weeks |
day | initiated | minute (*) | rstream | when |
days | inner | minutes | schema | where |
define (*) | insert | month | sec | while (*) |
delete | instanceof | months | second | window (*) |
desc | into | msec | seconds | year |
distinct | irstream | new | select | years |
