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https://issues.apache.org/jira/browse/FLINK-13197?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16990296#comment-16990296
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Danny Chen commented on FLINK-13197:
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Checking out the code of `RelOptUtil#createCastRel`, i'm wondering if we can
rename the LogicalProject directly without add any above new projections with
casts. After all, the code already rename the project with the constructor:
{code:java}
if (rename) {
// Use names and types from castRowType.
return projectFactory.createProject(rel, castExps,
castRowType.getFieldNames());
}
{code}
So i thought if we can"
# If the view rel root node is a LogicalProject, get its input then construct
the new project with the renamed one.
# If the view rel is not a LogicalProject, add a project above it with renamed
input refs.
> support querying Hive's view in Flink
> -------------------------------------
>
> Key: FLINK-13197
> URL: https://issues.apache.org/jira/browse/FLINK-13197
> Project: Flink
> Issue Type: Improvement
> Components: Connectors / Hive
> Reporter: Bowen Li
> Assignee: Rui Li
> Priority: Major
> Fix For: 1.10.0
>
>
> One goal of HiveCatalog and hive integration is to enable Flink-Hive
> interoperability, that is Flink should understand existing Hive meta-objects,
> and Hive meta-objects created thru Flink should be understood by Hive.
> Taking an example of a Hive view v1 in HiveCatalog and database hc.db. Unlike
> an equivalent Flink view whose full path in expanded query should be
> hc.db.v1, the Hive view's full path in the expanded query should be db.v1
> such that Hive can understand it, no matter it's created by Hive or Flink.
> [~lirui] can you help to ensure that Flink can also query Hive's view in both
> Flink planner and Blink planner?
> cc [~xuefuz]
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