cloud-fan opened a new pull request #25763: [SPARK-29057][SQL] remove 
InsertIntoTable
URL: https://github.com/apache/spark/pull/25763
 
 
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   ### What changes were proposed in this pull request?
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   Remove `InsertIntoTable` and replace it's usage by `InsertIntoStatement`
   
   ### Why are the changes needed?
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   `InsertIntoTable` and `InsertIntoStatement` are almost identical (except 
some namings). It doesn't make sense to keep 2 identical plans. After the 
removal of `InsertIntoTable`, the analysis process becomes:
   1. parser creates `InsertIntoStatement`
   2. v2 rule `ResolveInsertInto` converts `InsertIntoStatement` to v2 commands.
   3 v1 rules like `DataSourceAnalysis` and `HiveAnalysis` convert 
`InsertIntoStatement` to v1 commands.
   
   ### Does this PR introduce any user-facing change?
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   No
   
   ### How was this patch tested?
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   existing tests

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