[teiid-issues] [JBoss JIRA] (TEIID-4135) Invalid query when using recursive CTE with translators that do not suport RCTE pushdown

[RH Bugzilla Integration (JIRA)]

    [ https://issues.jboss.org/browse/TEIID-4135?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13195468#comment-13195468 ] 

RH Bugzilla Integration commented on TEIID-4135:
------------------------------------------------

Van Halbert <vhalbert at redhat.com> changed the Status of [bug 1326842|https://bugzilla.redhat.com/show_bug.cgi?id=1326842] from NEW to MODIFIED

> Invalid query when using recursive CTE with translators that do not suport RCTE pushdown
> ----------------------------------------------------------------------------------------
>
>                 Key: TEIID-4135
>                 URL: https://issues.jboss.org/browse/TEIID-4135
>             Project: Teiid
>          Issue Type: Bug
>          Components: JDBC Connector
>    Affects Versions: 8.12.x
>            Reporter: Andrej Šmigala
>            Assignee: Steven Hawkins
>             Fix For: 9.0, 8.12.5
>
>
> When running a recursive common table expression query against a source that does not support recursive cte pushdown, only the recursive part of the query is pushed, which fails, since it references a non-existent table (the cte).
> E. g. the query 
> {code:sql}
> WITH tmp_cte(id, fk, lvl) AS (
>     SELECT id, fk, 0 as lvl FROM SourceModel.cte_source WHERE fk IS NULL
>     UNION ALL
>     SELECT e.id, e.fk, lvl + 1 as lvl FROM SourceModel.cte_source AS e INNER JOIN tmp_cte AS ecte ON ecte.id = e.fk
>     )
> SELECT * FROM tmp_cte
> {code}
> against a PostreSQL source results in {noformat}Remote org.postgresql.util.PSQLException: ERROR: relation "tmp_cte" does not exist{noformat}
> because this query is pushed down:
> {code:sql}SELECT g_0.id, g_0.fk, g_0.lvl FROM tmp_cte AS g_0{code}



--
This message was sent by Atlassian JIRA
(v6.4.11#64026)