viirya commented on a change in pull request #26338: [SPARK-29680][SQL] Remove 
ALTER TABLE CHANGE COLUMN syntax
URL: https://github.com/apache/spark/pull/26338#discussion_r342798150
 
 

 ##########
 File path: 
sql/catalyst/src/main/antlr4/org/apache/spark/sql/catalyst/parser/SqlBase.g4
 ##########
 @@ -149,11 +149,8 @@ statement
     | ALTER (TABLE | VIEW) multipartIdentifier
         UNSET TBLPROPERTIES (IF EXISTS)? tablePropertyList             
#unsetTableProperties
     | ALTER TABLE multipartIdentifier
-        (ALTER | CHANGE) COLUMN? qualifiedName
+        (ALTER | CHANGE) COLUMN? multipartIdentifier
 
 Review comment:
   ok. will make a followup later.

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