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https://issues.apache.org/jira/browse/CASSANDRA-8705?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14298449#comment-14298449
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Robert Stupp commented on CASSANDRA-8705:
-----------------------------------------

If we would allow escapes, it would break a lot of existing applications.

TBH I don't think that newlines are a good choice to use in parts of the 
primary key. IMO you will run into problems when developing on mixed 
environments that use different line endings like CR-LF or LF (e.g. in script 
files).

The easier solution, if you really want to do it with newlines, might be to use 
Devcenter from datastax.com web site.

> cqlsh doesn't handle new line escape character inside string literals
> ---------------------------------------------------------------------
>
>                 Key: CASSANDRA-8705
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8705
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: mlowicki
>
> {code}
> cqlsh:sync> select count(*) from entity where user_id='255824802' and 
> parent_id='MzI5MDReMV48c2VydmVyIHRhZz50cmFzaF9ib29rbWFya3M=
>         ... ';
>  count
> -------
>      1
> (1 rows)
> cqlsh:sync> select count(*) from entity where user_id='255824802' and 
> parent_id='MzI5MDReMV48c2VydmVyIHRhZz50cmFzaF9ib29rbWFya3M=\n';
>  count
> -------
>      0
> (1 rows)
> {code}



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