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https://issues.apache.org/jira/browse/CALCITE-6434?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated CALCITE-6434:
------------------------------------
    Labels: pull-request-available  (was: )

> Specify identifier quoting for HiveSqlDialect and SparkSqlDialect
> -----------------------------------------------------------------
>
>                 Key: CALCITE-6434
>                 URL: https://issues.apache.org/jira/browse/CALCITE-6434
>             Project: Calcite
>          Issue Type: Improvement
>          Components: core
>    Affects Versions: 1.37.0
>            Reporter: xiong duan
>            Assignee: xiong duan
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.38.0
>
>
> The SQL:
> {code:java}
> SELECT product.product_class_id C
> FROM foodmart.product
> LEFT JOIN (SELECT CASE COUNT(*) WHEN 0 THEN NULL WHEN 1 THEN 
> MIN(product_class_id) ELSE (SELECT NULL
> UNION ALL
> SELECT NULL) END $f0
> FROM foodmart.product) t0 ON TRUE
> WHERE product.net_weight > t0.$f0{code}
> Generate by SINGLE_VALUE agg function.
> This SQL will parse failed in Spark Unless we add the identifier quoting like 
> `t0`.`$f0`
> I will add identifier Quote String for Spark and Hive, Here is the document:
>  * [https://spark.apache.org/docs/latest/sql-ref-identifier.html]
>  * 
> [https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-hive.support.quoted.identifiers]



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