[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-3404) Regular expressions (regex) boolean operator in HQL's where clause: rlike in mysql, regexp_match in informix, ... (regression from hibernate2)

[Dmitry Katsubo (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-3404?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=44265#comment-44265 ] 

Dmitry Katsubo commented on HHH-3404:
-------------------------------------

For HSQLDB:

{{regexp_substring(column, 'regexp') is not null}}

> Regular expressions (regex) boolean operator in HQL's where clause: rlike in mysql, regexp_match in informix, ... (regression from hibernate2)
> ----------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HHH-3404
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-3404
>             Project: Hibernate Core
>          Issue Type: New Feature
>          Components: query-hql
>    Affects Versions: 3.2.6
>            Reporter: Geoffrey De Smet
>
> Hibernate 2 supported the rlike boolean operator (at least for mysql): HB-1034. Hibernate3 currently doesn't.
> It turns out that most mainstream databases support regular expression patterns (independently from normal like patterns).
> Mysql: rlike
>   where a.serial rlike '\d*'
> Informix: regexp_match()
>   where regexp_match(a.serial, '\d*')
> Oracle: REGEXP_LIKE
>   where REGEXP_LIKE(a.serial, '\d*')
> There have been several forum posts asking about this feature for hibernate3 btw:
> http://forum.hibernate.org/viewtopic.php?p=2391395
> http://forum.hibernate.org/viewtopic.php?p=2375634
> etc

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