[teiid-issues] [JBoss JIRA] (TEIID-4221) HANA translator: incorrect pushdown of week function

[RH Bugzilla Integration (JIRA)]

    [ https://issues.jboss.org/browse/TEIID-4221?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13247908#comment-13247908 ] 

RH Bugzilla Integration commented on TEIID-4221:
------------------------------------------------

Van Halbert <vhalbert at redhat.com> changed the Status of [bug 1339568|https://bugzilla.redhat.com/show_bug.cgi?id=1339568] from MODIFIED to ON_QA

> HANA translator: incorrect pushdown of week function
> ----------------------------------------------------
>
>                 Key: TEIID-4221
>                 URL: https://issues.jboss.org/browse/TEIID-4221
>             Project: Teiid
>          Issue Type: Bug
>          Components: Misc. Connectors
>    Affects Versions: 8.12.5
>            Reporter: Jan Stastny
>            Assignee: Steven Hawkins
>             Fix For: 9.0, 8.12.5, 8.13.5
>
>
> Hana translator pushes down function week to SAP HANA datasource as its WEEK function. But it is not in accordance with the ISO8601 rule.
> For this standard, HANA has function ISOWEEK, which returns results in following format:
> {code:plain}
> 2000-W01 for date 'Jan 3, 2000'
> {code}
> So it should be possible to push Teiid's WEEK function as:
> {code:sql}
> SUBSTR_REGEXPR('[[:digit:]]{4}\-W([[:digit:]]{2})' IN ISOWEEK(datevalue) GROUP 1)
> {code}
> where 'datevalue' is column of DATE datatype.



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