[GitHub] [spark] huaxingao opened a new pull request #29355: [SPARK-31419][SQL][DOCS][FOLLOW-UP]Complete the documentation for Table-valued Function

[GitBox]

huaxingao opened a new pull request #29355:
URL: https://github.com/apache/spark/pull/29355


   # What changes were proposed in this pull request?
   There are two types of TVF. We only documented one type. Adding the doc for 
the 2nd type.
   
   
   ### Why are the changes needed?
   complete Table-valued Function doc
   
   
   ### Does this PR introduce _any_ user-facing change?
   <img width="1100" alt="Screen Shot 2020-08-04 at 3 55 34 PM" 
src="https://user-images.githubusercontent.com/13592258/89353368-17f50600-d66b-11ea-941b-359bded3555c.png";>
   
   <img width="1100" alt="Screen Shot 2020-08-04 at 3 56 01 PM" 
src="https://user-images.githubusercontent.com/13592258/89353374-19bec980-d66b-11ea-8a7f-ff43d1b21fa8.png";>
   
   <img width="1098" alt="Screen Shot 2020-08-04 at 3 56 24 PM" 
src="https://user-images.githubusercontent.com/13592258/89353379-1aeff680-d66b-11ea-8f78-f13f0e53e5ea.png";>
   
   
   
   ### How was this patch tested?
   Manually build and check
   


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