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https://issues.apache.org/jira/browse/SPARK-23168?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Takeshi Yamamuro updated SPARK-23168:
-------------------------------------
Environment: (was: We already have fact table and unique column
inferences in StarSchemaDetection for decision making queries. IMHO, in most
cases, users could know which is a fact table and which columns are unique. So,
fact table and unique column hint might help for these users.
For example,
{code}
scala> factTable.hint("factTable").hint("uid").join(dimTable)
{code}
)
> Hints for fact tables and unique columns
> ----------------------------------------
>
> Key: SPARK-23168
> URL: https://issues.apache.org/jira/browse/SPARK-23168
> Project: Spark
> Issue Type: New Feature
> Components: SQL
> Affects Versions: 2.2.1
> Reporter: Takeshi Yamamuro
> Priority: Minor
>
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