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https://issues.apache.org/jira/browse/CASSANDRA-10279?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14733873#comment-14733873
 ] 

Lex Lythius commented on CASSANDRA-10279:
-----------------------------------------

Maybe the underlying issue is the same as in 
https://issues.apache.org/jira/browse/CASSANDRA-9838.

> Inconsistent update/delete behavior for static lists vs lists
> -------------------------------------------------------------
>
>                 Key: CASSANDRA-10279
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10279
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>         Environment: [cqlsh 5.0.1 | Cassandra 2.2.0 | CQL spec 3.3.0 | Native 
> protocol v4]
> Ubuntu 14.04 x64
>            Reporter: Lex Lythius
>
> Partial list deletions (either in the form of {{UPDATE list = list - \[...]}} 
> or {{DELETE list\[index]}} form) work fine in regular list columns, but do 
> nothing or throw bad index error when applied to *static* list columns.
> Example:
> {code:sql}
> create table t_lists (
>   id int,
>   dt int,
>   ls list<ascii>,
>   sls list<ascii> static,
>   primary key(id, dt) 
> );
> cqlsh:test> update t_lists set ls = ['foo', 'bar', 'baz'], sls = ['chico', 
> 'harpo', 'zeppo', 'groucho'] where id=1 and dt=1;
> cqlsh:test> select * from t_lists;
>  id | dt | sls                                    | ls
> ----+----+----------------------------------------+-----------------------
>   1 |  1 | ['chico', 'harpo', 'zeppo', 'groucho'] | ['foo', 'bar', 'baz']
> (1 rows)
> cqlsh:test> delete ls[2] from t_lists where id = 1 and dt = 1; -- works
> cqlsh:test> delete sls[2] from t_lists where id = 1; -- errors
> InvalidRequest: code=2200 [Invalid query] message="Attempted to delete an 
> element from a list which is null"
> cqlsh:test> select * from t_lists;
>  id | dt | sls                                    | ls
> ----+----+----------------------------------------+----------------
>   1 |  1 | ['chico', 'harpo', 'zeppo', 'groucho'] | ['foo', 'bar']
> (1 rows)
> cqlsh:test> update t_lists set ls = ls - ['bar'] where id=1 and dt=1; -- works
> cqlsh:test> update t_lists set sls = sls - ['zeppo'] where id=1; -- fails 
> silently
> cqlsh:test> select * from t_lists;
>  id | dt | sls                                    | ls
> ----+----+----------------------------------------+---------
>   1 |  1 | ['chico', 'harpo', 'zeppo', 'groucho'] | ['foo']
> (1 rows)
> {code}



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