[GitHub] [hudi] KnightChess commented on issue #6037: [QUESTION] about the implementation of spark merge into

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KnightChess commented on issue #6037:
URL: https://github.com/apache/hudi/issues/6037#issuecomment-1174476029

   @fengjian428 No, just COW table. 
   In case one, it will throw AnalysisException `Cannot resolve target.age in ...., the input columns is: [id#x, name#y, age#z, dt#w]`.
   In case two, I want use more than one updateAction may be like below
   ```sql
   merge into delete_error_test target 
   using (select 'wlq_new3' as name, 1 as id, 29 as age, '20210101' as dt) source 
   on target.id = source.id
   when matched and target.age = -1 then update set name = source.name, age = source.age
   when matched and target.age <> -1 then update set name = source.name
   when not matched  then insert (id, age, name, dt) 
   values (source.id, source.age, source.name, '20210102')").explain(true)
   ```
   And I just want to know why add the limit in these case, then I will coding for these scenes.


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