Available since: v3.0.5
The ALTER EVENT statement can be used to modify an existing defined event.
Statement syntax
SurrealQL Syntax
ALTER EVENT [ IF EXISTS ] @name ON [ TABLE ] @table
[ ASYNC [ RETRY @retry ] [ MAXDEPTH @max_depth ] | DROP ASYNC ]
[ WHEN @condition | DROP WHEN ]
[ THEN @action, ... | DROP THEN ]
[ COMMENT @string | DROP COMMENT ]Example usage
DEFINE FIELD status ON post TYPE "submitted" | "published" DEFAULT "submitted";
-- Define an event
DEFINE EVENT publish_post ON TABLE publication
WHEN $event = "CREATE"
THEN (
FOR $post IN $after.posts {
UPDATE $post SET status = "published";
}
);
-- Make it async
ALTER EVENT publish_post ON TABLE publication ASYNC;
CREATE post:one SET content = "I read the news today, oh boy...";
CREATE post:two SET content = "On the banks of Tuonela Bleach the skeletons of kings";
CREATE post:three SET content = "뭐 화끈한 일 뭐 신나는 일 없을까";
CREATE publication SET posts = [post:one, post:two, post:three];
SELECT * FROM post;Output once async events processed
[
{
content: 'I read the news today, oh boy...',
id: post:one,
status: 'submitted'
},
{
content: '뭐 화끈한 일 뭐 신나는 일 없을까',
id: post:three,
status: 'submitted'
},
{
content: 'On the banks of Tuonela Bleach the skeletons of kings',
id: post:two,
status: 'submitted'
}
]