[GitHub] [doris] ByteYue opened a new issue, #13150: [Bug](ExecNode) unreachable projections open cause projections uninitialized

[GitBox]

ByteYue opened a new issue, #13150:
URL: https://github.com/apache/doris/issues/13150

   ### Search before asking
   
   - [X] I had searched in the 
[issues](https://github.com/apache/incubator-doris/issues?q=is%3Aissue) and 
found no similar issues.
   
   
   ### Version
   
   Master
   
   ### What's Wrong?
   
   In current 'ExecNode::open' function, the 'open(_projections)' is 
unreachable which might cause serious crashed.
   
![FPW7PMD4Nw](https://user-images.githubusercontent.com/43750022/194686555-f35e9b66-cc3e-4d03-ae68-745026ddd1f3.jpg)
   
   When query such statement, be might crash.
   
![img_v2_9f5b9416-87b3-4d10-8510-b56c7e4f21bg](https://user-images.githubusercontent.com/43750022/194686626-3e196ee5-6e27-435e-ba08-a79c0537a1f3.png)
   
   ### What You Expected?
   
   return rows as expected instead of crash.
   
   ### How to Reproduce?
   
   set enable_neredis_planner=true
   select case when col1 = 2 then 3 else 0 end from t1;
   
   ### Anything Else?
   
   _No response_
   
   ### Are you willing to submit PR?
   
   - [ ] Yes I am willing to submit a PR!
   
   ### Code of Conduct
   
   - [X] I agree to follow this project's [Code of 
Conduct](https://www.apache.org/foundation/policies/conduct)
   


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