cloud-fan commented on a change in pull request #27076: revert
[SPARK-29680][SQL] Remove ALTER TABLE CHANGE COLUMN syntax
URL: https://github.com/apache/spark/pull/27076#discussion_r362562872
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File path:
sql/catalyst/src/main/antlr4/org/apache/spark/sql/catalyst/parser/SqlBase.g4
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@@ -161,6 +161,9 @@ statement
| ALTER TABLE table=multipartIdentifier
(ALTER | CHANGE) COLUMN? column=multipartIdentifier
(TYPE dataType)? (COMMENT comment=STRING)? colPosition?
#alterTableColumn
+ | ALTER TABLE table=multipartIdentifier partitionSpec?
+ CHANGE COLUMN?
+ colName=multipartIdentifier colType colPosition?
#hiveChangeColumn
Review comment:
This is to be consistent with the other ALTER COLUMN syntax.
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