cassandra-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Alex Petrov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-12621) How to query '%' character using LIKE operator in Cassandra 3.7?
Date Tue, 13 Sep 2016 19:55:20 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-12621?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15488228#comment-15488228
] 

Alex Petrov commented on CASSANDRA-12621:
-----------------------------------------

>From what I have seen in the logic, no, that won't work, as it checks for {{startsWith}}
and {{endsWith}} {{%}}. We'd have to trim trailing {{%}} and unescape all the middle ones.

> How to query '%' character using LIKE operator in Cassandra 3.7?
> ----------------------------------------------------------------
>
>                 Key: CASSANDRA-12621
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-12621
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Mikhail Krupitskiy
>            Priority: Critical
>              Labels: sasi
>
> I use Cassandra 3.7 and have a text column with SASI index. Let's assume that I want
to find column values that contain '%' character somewhere in the middle. The problem is that
'%' is a command char for LIKE clauses. How to escape '%' char in a query like LIKE '%%%'?
> Here is a test script:
> {code}
> DROP keyspace if exists kmv;
> CREATE keyspace if not exists kmv WITH REPLICATION = { 'class' : 'SimpleStrategy', 'replication_factor':'1'}
;
> USE kmv;
> CREATE TABLE if not exists kmv (id int, c1 text, c2 text, PRIMARY KEY(id, c1));
> CREATE CUSTOM INDEX ON kmv.kmv  ( c2 ) USING 'org.apache.cassandra.index.sasi.SASIIndex'
WITH OPTIONS = {
> 'analyzed' : 'true',
> 'analyzer_class' : 'org.apache.cassandra.index.sasi.analyzer.NonTokenizingAnalyzer',
> 'case_sensitive' : 'false', 
> 'mode' : 'CONTAINS'
> };
> INSERT into kmv (id, c1, c2) values (1, 'f22', 'qwe%asd');
> SELECT c2 from kmv.kmv where c2 like '%$$%$$%';
> {code}
> The select query returns nothing.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message