Updating an array of objects fields in crate - crate

Question

I created a table with following syntax:
create table poll(poll_id string primary key,
poll_type_id integer,
poll_rating array(object as (rating_id integer,fk_user_id string, israted_image1 integer, israted_image2 integer, updatedDate timestamp, createdDate timestamp )),
poll_question string,
poll_image1 string,
poll_image2 string
)
And I inserted a record without "poll_rating" field which is actually an array of objects fields.
Now when I try to update a poll_rating with the following commands:
update poll set poll_rating = [{"rating_id":1,"fk_user_id":-1,"israted_image1":1,"israted_image2":0,"createddate":1400067339.0496}] where poll_id = "f748771d7c2e4616b1865f37b7913707";
I'm getting an error message like this:
"SQLParseException[line 1:31: no viable alternative at input '[']; nested: ParsingException[line 1:31: no viable alternative at input '[']; nested: NoViableAltException;"
Can anyone tell me why I get this error when I try to update the array of objects fields.

Answer 1

Defining arrays and objects directly in SQL statement is currently not supported by our SQL parser, please use parameter substitution using placeholders instead as described here:
https://crate.io/docs/current/sql/rest.html
Example using curl is as below:
curl -sSXPOST '127.0.0.1:4200/_sql?pretty' -d#- <<- EOF
{"stmt": "update poll set poll_rating = ? where poll_id = ?",
"args": [ [{"rating_id":1,"fk_user_id":-1,"israted_image1":1,"israted_image2":0,"createddate":1400067339.0496}], "f748771d7c2e4616b1865f37b7913707" ]
}
EOF