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https://issues.apache.org/jira/browse/CASSANDRA-13958?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michał Szczygieł updated CASSANDRA-13958:
-----------------------------------------
    Status: Patch Available  (was: Open)

I'm not sure if it's the correct approach. I've just changed lexer to append 
all trailing dollars before the closing pair.
Branch: [https://github.com/mszczygiel/cassandra/tree/trunk-13958]
Build: [https://circleci.com/gh/mszczygiel/cassandra/tree/trunk-13958]

> [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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