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https://issues.apache.org/jira/browse/CALCITE-4987?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17479914#comment-17479914
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yanjing.wang commented on CALCITE-4987:
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Hi Julian, I have refined the comment on "orderField", please review.
> JDBC adapter generates incorrect query when ORDER BY alias collides with
> field in SELECT ITEM
> ---------------------------------------------------------------------------------------------
>
> Key: CALCITE-4987
> URL: https://issues.apache.org/jira/browse/CALCITE-4987
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.29.0
> Environment: jdk8
> Reporter: yanjing.wang
> Assignee: yanjing.wang
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.30.0
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> I reproduce with the following query.
>
> {code:java}
> SELECT sum(shelf_width) as shelf_width FROM product ORDER BY shelf_width{code}
> you must have noticed that the shelf_width alias is same with field
> 'shelf_width' in sum.
> I expected the query hasn't changed when I test in RelToSqlConverterTest. But
> I get unexpected query is
> {code:java}
> SELECT sum(shelf_width) as shelf_width FROM product ORDER BY sum(shelf_width)
> {code}
> the unexpected query is not valid in the dialect which support order by
> alias conformance.
>
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