yaooqinn commented on code in PR #46440:
URL: https://github.com/apache/spark/pull/46440#discussion_r1596326588
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sql/api/src/main/antlr4/org/apache/spark/sql/catalyst/parser/SqlBaseParser.g4:
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@@ -980,9 +981,16 @@ valueExpression
| left=valueExpression operator=AMPERSAND right=valueExpression
#arithmeticBinary
| left=valueExpression operator=HAT right=valueExpression
#arithmeticBinary
| left=valueExpression operator=PIPE right=valueExpression
#arithmeticBinary
+ | left=valueExpression shiftOperator right=valueExpression
#shiftExpression
| left=valueExpression comparisonOperator right=valueExpression
#comparison
;
+shiftOperator
+ : LT LT
+ | GT GT
+ | GT GT GT
Review Comment:
I haven't found a way to retrieve the whitespace back to fail such a case.
Tokenize these operators works but it fails to parse nested map and struct types
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