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https://issues.apache.org/jira/browse/CASSANDRA-11131?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15136251#comment-15136251
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DOAN DuyHai commented on CASSANDRA-11131:
-----------------------------------------
/cc [~xedin]
> [SASI Pre-QA] Allow '<term>%' syntax for CONTAINS mode
> ------------------------------------------------------
>
> Key: CASSANDRA-11131
> URL: https://issues.apache.org/jira/browse/CASSANDRA-11131
> Project: Cassandra
> Issue Type: Improvement
> Components: CQL
> Environment: Tested from build
> [CASSANDRA-11067|https://issues.apache.org/jira/browse/CASSANDRA-11067]
> Reporter: DOAN DuyHai
>
> Tested from build
> [CASSANDRA-11067|https://issues.apache.org/jira/browse/CASSANDRA-11067]
> {code:sql}
> CREATE KEYSPACE music WITH replication = {'class': 'SimpleStrategy',
> 'replication_factor': '1'} AND durable_writes = true;
> CREATE TABLE music.albums (
> id int PRIMARY KEY,
> artist text,
> title text
> );
> CREATE CUSTOM INDEX ON music.albums (title) USING
> 'org.apache.cassandra.index.sasi.SASIIndex' WITH OPTIONS =
> {'tokenization_skip_stop_words': 'true', 'analyzer_class':
> 'org.apache.cassandra.index.sasi.analyzer.StandardAnalyzer',
> 'case_sensitive': 'false', 'mode': 'CONTAINS',
> 'tokenization_enable_stemming': 'true'};
> INSERT INTO music.albums(id, artist, title) VALUES(1, 'Superpitcher',
> 'Yesterday');
> INSERT INTO music.albums(id, artist, title) VALUES(2, 'Hilary Duff', 'So
> Yesterday');
> INSERT INTO music.albums(id, artist, title) VALUES(3, 'The Mr. T Experience',
> 'Yesterday Rules');
> SELECT artist,title FROM music.albums WHERE title LIKE 'Yesterday%';
> InvalidRequest: code=2200 [Invalid query] message="title3 LIKE '<term>%'
> restriction is only supported on properly indexed columns"
> {code}
> It seems that for *CONTAINS* mode, only _%<term>%_ and _%<term>_ syntaxes are
> allowed.
> Is there any technical reason to ban _<term>%_ syntax ?
> Indeed using _%<term>%_ would return all results matched by _<term>%_
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