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https://issues.apache.org/jira/browse/DERBY-39?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12862220#action_12862220
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Knut Anders Hatlen commented on DERBY-39:
-----------------------------------------
For the record, these queries fail on PostgreSQL and MySQL too. And, according
to earlier comments, they also fail on DB2.
Here's what PostgreSQL 8.4 says:
> ERROR: invalid reference to FROM-clause entry for table "a0"
> LINE 4: ...MODEOFPAYMENTFLAVOUR_MODEOFPAYMENTFLAVOURID_OID = A0.MODEOFP...
> ^
> HINT: There is an entry for table "a0", but it cannot be referenced from
> this part of the query.
And here's the error reported by MySQL 5.1:
> ERROR 1054 (42S22): Unknown column 'A0.MODEOFPAYMENTFLAVOURID' in 'on clause'
> Strange error in JOIN ON clause
> -------------------------------
>
> Key: DERBY-39
> URL: https://issues.apache.org/jira/browse/DERBY-39
> Project: Derby
> Issue Type: Bug
> Components: SQL
> Affects Versions: 10.0.2.0
> Reporter: Erik Bengtson
> Attachments: d39.sql, derby-joinon.tar.gz
>
>
> 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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