cloud-fan commented on a change in pull request #26419:
[SPARK-29680][SQL][Followup] Replace qualifiedName with multipartIdentifier
URL: https://github.com/apache/spark/pull/26419#discussion_r343501942
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File path:
sql/catalyst/src/main/antlr4/org/apache/spark/sql/catalyst/parser/SqlBase.g4
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@@ -136,20 +136,22 @@ statement
| ALTER TABLE multipartIdentifier
ADD (COLUMN | COLUMNS)
'(' columns=qualifiedColTypeWithPositionList ')'
#addTableColumns
+ | ALTER TABLE table=multipartIdentifier
+ RENAME COLUMN
+ from=multipartIdentifier TO to=multipartIdentifier
#renameTableColumn
Review comment:
`to` should be a single `identifer`. We can only rename a column or a field,
but not a field chain.
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