[GitHub] [spark] wangyum opened a new pull request #29088: [SPARK-32289][SQL] Some characters are garbled when opening csv files with Excel

[GitBox]

wangyum opened a new pull request #29088:
URL: https://github.com/apache/spark/pull/29088


   ### What changes were proposed in this pull request?
   
   This pr add a new `bom` CSVOptions to support fix some characters are 
garbled when opening with Excel.
   
   Before this pr:
   
![image](https://user-images.githubusercontent.com/5399861/87321221-8a882f80-c55e-11ea-85fd-0a26cacbdaf8.png)
   
   
   After this pr and set `bom` to true:
   
![image](https://user-images.githubusercontent.com/5399861/87321310-abe91b80-c55e-11ea-8b12-3b510385a1c0.png)
   
   
   ### Why are the changes needed?
   
   Fix garbled issue.
   
   
   ### Does this PR introduce _any_ user-facing change?
   
   No.
   
   
   ### How was this patch tested?
   
   Unit test.
   


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