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https://issues.apache.org/jira/browse/CASSANDRA-17198?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17468124#comment-17468124
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Kanthi Subramanian commented on CASSANDRA-17198:
------------------------------------------------
[~blerer] I removed the restrictions here, but the like query doesnt work as
expected for example 'John%' doesnt work, any thoughts on where I should be
looking into. I did add an index.
[https://github.com/apache/cassandra/pull/1373/files]
{code:java}
// code placeholder
cqlsh:tutorialspoint> select * from emp where emp_name like 'John Doe%' allow
filtering; emp_id | date | emp_name
--------+---------------+----------
1 | 1564830182000 | John Doe(1 rows)
cqlsh:tutorialspoint> select * from emp where emp_name like 'John%' allow
filtering; emp_id | date | emp_name
--------+------+----------
{code}
> Allow to filter using LIKE predicates
> -------------------------------------
>
> Key: CASSANDRA-17198
> URL: https://issues.apache.org/jira/browse/CASSANDRA-17198
> Project: Cassandra
> Issue Type: Improvement
> Components: CQL/Syntax
> Reporter: Benjamin Lerer
> Assignee: Kanthi Subramanian
> Priority: Normal
> Labels: AdventCalendar2021, lhf
> Fix For: 4.x
>
>
> {{LIKE}} predicates can only be used with the SASI indices. In several
> usecases (e.g. querying the {{settings}} virtual table) it makes sense to
> support them for filtering.
> + Additional information for newcomers:+
> There are some checks in the {{StatementRestrictions}} constructor and on
> {{LikeRestriction}} that need to be removed for allowing filtering using LIKE
> on clustering and regular columns.
> For filtering on partition columns the {{needFiltering}} methods in
> {{PartitionKeySingleRestrictionSet}} will need to be modified to return true
> when LIKE predicate are used.
> The unit tests should go in {{SelectTest}}.
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