[
http://issues.apache.org/jira/browse/DERBY-39?page=comments#action_12366404 ]
Erik Bengtson commented on DERBY-39:
------------------------------------
> I'm puzzled by this last query.
Me too ;) This query is generated by a ORM tool, and I don't have control over
it unless I fine tune the code that generates it. Since the ORM tool is
covering a lot of scenarios, that's the best we can get for now.
We want to return PERSON crossjoin PROJECT where PROJECT has NAME=? and exists
for PERSON
There is a join table PROJECT_MEMBER where member is PERSON
Say
PERSON = { "John", "Mary", "Mark" }
PROJECT = {"Derby", "Ant", "Log4j" }
PROJECT_MEMBER =
{("John","Derby"),("Mary","Ant"),("Mark","Derby"),("Mark","Ant")}
We want to return PERSON crossjoin PROJECT where PROJECT has NAME="Ant" and
exists for PERSON
results are
{("Mary","Ant"),("Mark","Ant")}
> Strange error in JOIN ON clause
> -------------------------------
>
> Key: DERBY-39
> URL: http://issues.apache.org/jira/browse/DERBY-39
> Project: Derby
> Type: Bug
> Components: SQL, Newcomer
> Versions: 10.0.2.0
> Reporter: Erik Bengtson
>
> The exception:
> ---------------------------------------
> Error: An ON clause associated with a JOIN operator is not valid.
> ---------------------------------------
> happens when I run the below SQL script:
> ---------------------------------------
> SELECT
> THIS.DOSSIERTEMPLATE_ID
> FROM DOSSIERTEMPLATE THIS,
> ENTITLEMENT UNBOUND_ENTITLE
> INNER JOIN
> ENTITLEMENT II
> ON UNBOUND_ENTITLE.ENTITLEMENT_ID = II.ENTITLEMENT_ID
> INNER JOIN
> DOSSIERTEMPLATERESOURCE BB
> ON II.ENTITLED_TO_RESOURCE_ID_OID = BB.DOSSIERTEMPLATERESOURCE_ID
> INNER JOIN
> I18N THIS_LABEL
> ON THIS.LABEL_I18N_ID_OID = THIS_LABEL.I18N_ID
> ---------------------------------------
> It works fine if I run without the LABEL join
> ---------------------------------------
> SELECT
> THIS.DOSSIERTEMPLATE_ID
> FROM DOSSIERTEMPLATE THIS,
> ENTITLEMENT UNBOUND_ENTITLE
> INNER JOIN
> ENTITLEMENT II
> ON UNBOUND_ENTITLE.ENTITLEMENT_ID = II.ENTITLEMENT_ID
> INNER JOIN
> DOSSIERTEMPLATERESOURCE BB
> ON II.ENTITLED_TO_RESOURCE_ID_OID = BB.DOSSIERTEMPLATERESOURCE_ID
> ---------------------------------------
> The column LABEL_I18N_ID_OID is BIGINT and has a FK to I18N_ID, which is
> BIGINT as well
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