bowenli86 commented on issue #8859: [FLINK-12905][table-planner] Enable 
querying CatalogViews in legacy planner
URL: https://github.com/apache/flink/pull/8859#issuecomment-505533179
 
 
   > Hi @bowenli86 this is a good point. I will address it soon.
   > 
   > One somewhat related question. Does the hive catalog (not necessarily hive 
metastore) support cross catalog views now?
   
   `HiveCatalog` itself doesn't have constraints on that, because views and 
their expanded query are just data passing thru `HiveCatalog` on read/write and 
`HiveCatalog` won't manipulate them, so it's totally up to the planner that 
whether it can parse and support those cross-catalog views. I'm not sure 
whether users would find cross-catalog views useful, maybe we can listen to 
user feedbacks after releasing 1.9? I don't think it need to happen in 1.9.
   
   @lirui-apache can help and share how we build a `HiveAnalyzer` in Blink to 
support Hive view expanded query on view creation and parsing it upon read. 
Maybe you guys can talk offline on that.
   

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