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）、イベントのプロパティ名として利用できません。
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 |
