[GitHub] [spark] gengliangwang commented on pull request #31349: [SPARK-34246][SQL] New implicit cast syntax rules in ANSI mode

Tue, 26 Jan 2021 08:28:59 -0800 


gengliangwang commented on pull request #31349:
URL: https://github.com/apache/spark/pull/31349#issuecomment-767662508


   Here are the syntax rules of Type precedence list determination from ANSI 
SQL standard
   
![image](https://user-images.githubusercontent.com/1097932/105873505-6a770580-5fb0-11eb-88cc-c47be442ec79.png)
   
![image](https://user-images.githubusercontent.com/1097932/105873549-74990400-5fb0-11eb-9433-7e98611d71cc.png)
   
![image](https://user-images.githubusercontent.com/1097932/105873523-6f3bb980-5fb0-11eb-8c99-92229b2811de.png)
   


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