cloud-fan commented on code in PR #42888:
URL: https://github.com/apache/spark/pull/42888#discussion_r1356029023
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sql/api/src/main/antlr4/org/apache/spark/sql/catalyst/parser/SqlBaseParser.g4:
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@@ -1196,6 +1195,7 @@ qualifiedNameList
functionName
: IDENTIFIER_KW LEFT_PAREN expression RIGHT_PAREN
+ | identFunc=IDENTIFIER_KW // IDENTIFIER itself is also a valid function
name.
Review Comment:
```suggestion
| identFunc=IDENTIFIER_KW // IDENTIFIER itself is also a valid function
name.
```
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