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From "Benjamin Lerer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-11424) Add support to "unset" JSON fields in prepared statements
Date Thu, 07 Jul 2016 12:34:11 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-11424?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15366022#comment-15366022
] 

Benjamin Lerer commented on CASSANDRA-11424:
--------------------------------------------

Personally, the {{IGNORE_OMITTED}} approach looks fine to me. It requires a new keyword but
the request is easily understandable.
That being said, I am probably not the best person for the JSON related questions. 

> Add support to "unset" JSON fields in prepared statements
> ---------------------------------------------------------
>
>                 Key: CASSANDRA-11424
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-11424
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Ralf Steppacher
>
> CASSANDRA-7304 introduced the ability to distinguish between {{NULL}} and {{UNSET}} prepared
statement parameters.
> When inserting JSON objects it is not possible to profit from this as a prepared statement
only has one parameter that is bound to the JSON object as a whole. There is no way to control
{{NULL}} vs {{UNSET}} behavior for columns omitted from the JSON object.
> Please extend on CASSANDRA-7304 to include JSON support.
> {color:grey}
> (My personal requirement is to be able to insert JSON objects with optional fields without
incurring the overhead of creating a tombstone of every column not covered by the JSON object
upon initial(!) insert.)
> {color}



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