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https://issues.apache.org/jira/browse/CALCITE-981?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Julian Hyde updated CALCITE-981:
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Component/s: jdbc-adapter
> Push NULLS FIRST etc. down to JDBC adapter
> ------------------------------------------
>
> Key: CALCITE-981
> URL: https://issues.apache.org/jira/browse/CALCITE-981
> Project: Calcite
> Issue Type: Bug
> Components: jdbc-adapter
> Reporter: Julian Hyde
> Assignee: Julian Hyde
>
> If a JdbcSort has a RelFieldCollation.direction that is different from the
> JDBC source's default direction, we should generate NULLS FIRST or NULLS
> LAST.
> If the source does not support that syntax, devise something else; e.g.
> {code}ORDER BY ISNULL(x), x{code} in MySQL; see
> http://jira.pentaho.com/browse/MONDRIAN-226.
> The dialect should know what each JDBC source's default direction is.
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