[jira] [Commented] (CASSANDRA-13958) [CQL] Inconsistent handling double dollar sign for strings

["Jason Brown (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-13958?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16239726#comment-16239726 ] 

Jason Brown commented on CASSANDRA-13958:
-----------------------------------------

I can review within the next day or so.

> [CQL] Inconsistent handling double dollar sign for strings
> ----------------------------------------------------------
>
>                 Key: CASSANDRA-13958
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-13958
>             Project: Cassandra
>          Issue Type: Bug
>          Components: CQL
>            Reporter: Hugo Picado
>            Priority: Minor
>
> Double dollar signs is a [built-in method for escaping columns that may contain single quotes in its content](https://docs.datastax.com/en/cql/3.3/cql/cql_reference/escape_char_r.html). The way this is handled however is not consistent, in the sense that it allows for $ to appear in the middle of the string but not in the last char.
> *Examples:*
> Valid: insert into users(id, name) values(1, $$john$$)
> Inserts the string *john*
> Valid: insert into users(id, name) values(1, $$jo$hn$$)
> Inserts the string *jo$hn*
> Valid: insert into users(id, name) values(1, $$$john$$)
> Inserts the string *$john*
> Invalid: insert into users(id, name) values(1, $$john$$$)
> Fails with:
> {code}
> Invalid syntax at line 1, char 48
>   insert into users(id, name) values(1, $$john$$$);
> {code}



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