beliefer commented on a change in pull request #27495: [SPARK-28880][SQL]
Support ANSI nested bracketed comments
URL: https://github.com/apache/spark/pull/27495#discussion_r376701608
##########
File path:
sql/catalyst/src/main/antlr4/org/apache/spark/sql/catalyst/parser/SqlBase.g4
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@@ -1794,7 +1794,7 @@ BRACKETED_EMPTY_COMMENT
;
BRACKETED_COMMENT
- : '/*' ~[+] .*? '*/' -> channel(HIDDEN)
+ : '/*' ~[+] ( ~'/' | ~'*' '/' ~'*' )*? BRACKETED_COMMENT? ( ~'/' | ~'*'
'/' ~'*' )*? '*/' -> channel(HIDDEN)
Review comment:
This not works well.
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