cloud-fan commented on a change in pull request #24117: [SPARK-27181][SQL]: Add
public transform API
URL: https://github.com/apache/spark/pull/24117#discussion_r269259815
##########
File path:
sql/catalyst/src/main/antlr4/org/apache/spark/sql/catalyst/parser/SqlBase.g4
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@@ -578,6 +578,21 @@ namedExpressionSeq
: namedExpression (',' namedExpression)*
;
+transformList
+ : '(' transforms+=transform (',' transforms+=transform)* ')'
+ ;
+
+transform
+ : qualifiedName
#identityTransform
Review comment:
it's used in CREATE TABLE statement only, do we really need `qualifiedName`?
I think `identifier` is good enough here.
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