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https://issues.apache.org/jira/browse/CALCITE-7363?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mihai Budiu resolved CALCITE-7363.
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Fix Version/s: 1.42.0
Resolution: Fixed
Fixed in
[https://github.com/apache/calcite/commit/c8387a6e7d9d67ce2577e24f11929696668a1a76]
Thank you for the review [~asolimando]
> Improve error message for ASOF JOIN
> ------------------------------------
>
> Key: CALCITE-7363
> URL: https://issues.apache.org/jira/browse/CALCITE-7363
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Affects Versions: 1.41.0
> Reporter: Mihai Budiu
> Assignee: Mihai Budiu
> Priority: Minor
> Labels: pull-request-available
> Fix For: 1.42.0
>
>
> An ASOF JOIN requires some very strict shape for the two conditions it
> accepts.
> However, the error message provided when the shape is inadequate can be
> improved:
> {code:java}
> CREATE TABLE asof_tbl(intt INT, arr VARCHAR ARRAY );
> SELECT * FROM asof_tbl t1
> LEFT ASOF JOIN asof_tbl AS t2
> MATCH_CONDITION (t1.intt >= t2.intt)
> ON t1.arr[2] = t2.arr[2];{code}
> Error:
> {code:java}
> ASOF JOIN condition must be a conjunction of equality comparisons {code}
> The ASOF JOIN in this case actually *is* a conjunction of equality
> comparisons, but the message should say that the compared values must be just
> columns from the two sides of the join.
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