[jira] [Updated] (CALCITE-2975) Add the JSON_REMOVE function

["Forward Xu (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CALCITE-2975?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Forward Xu updated CALCITE-2975:
--------------------------------
    Issue Type: Sub-task  (was: New Feature)
        Parent: CALCITE-2867

> Add the JSON_REMOVE function
> ----------------------------
>
>                 Key: CALCITE-2975
>                 URL: https://issues.apache.org/jira/browse/CALCITE-2975
>             Project: Calcite
>          Issue Type: Sub-task
>            Reporter: Forward Xu
>            Assignee: Forward Xu
>            Priority: Major
>
> JSON_REMOVE(json_doc, path[, path] ...)
> Removes data from a JSON document and returns the result. Returns NULL if any argument is NULL. An error occurs if the json_doc argument is not a valid JSON document or any path argument is not a valid path expression or is $ or contains a * or ** wildcard.
> The path arguments are evaluated left to right. The document produced by evaluating one path becomes the new value against which the next path is evaluated.
> It is not an error if the element to be removed does not exist in the document; in that case, the path does not affect the document.
> JSON_REMOVE SQL:
> {code:java}
> SELECT JSON_REMOVE(v, '$[1]') AS c1
>  FROM (VALUES ('["a", ["b", "c"], "d"]')) AS t(v);
> {code}
> RESULT:
> ||c1||
> |["a", "d"]|



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