phoenix-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Kevin Liew (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PHOENIX-2641) Implicit wildcard in LIKE predicate search pattern
Date Fri, 26 Aug 2016 18:47:20 GMT

    [ https://issues.apache.org/jira/browse/PHOENIX-2641?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15439553#comment-15439553
] 

Kevin Liew commented on PHOENIX-2641:
-------------------------------------

The query compiler compiled single wildcard (`%` and `_`) expressions to null expressions.
Now it only does that for `%`.

> Implicit wildcard in LIKE predicate search pattern
> --------------------------------------------------
>
>                 Key: PHOENIX-2641
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-2641
>             Project: Phoenix
>          Issue Type: Bug
>    Affects Versions: 4.7.0
>         Environment: Phoenix 4.7.0 on Calcite 1.5.0
>            Reporter: Kevin Liew
>            Assignee: Kevin Liew
>              Labels: newbie
>
> LIKE predicates have an implicit wildcard at the end of the search pattern
> ie.
> {code:sql}select distinct at1.col2 from at1 group by at1.col2 having at1.col2 like '_'{code}
> will match every cell in col2 whereas it should only match single-character cells.
> This affects both VARCHAR and CHAR.
> Note that selecting by pattern '__' (two single-character wildcards) works properly for
VARCHAR but not for CHAR (no result).



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

Mime
View raw message