fhueske commented on a change in pull request #6622: [FLINK-10222] [table]
Table scalar function expression parses error when function name equals the
exists keyword suffix
URL: https://github.com/apache/flink/pull/6622#discussion_r217701805
##########
File path:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/expressions/ExpressionParser.scala
##########
@@ -45,6 +45,12 @@ object ExpressionParser extends JavaTokenParsers with
PackratParsers {
("""(?i)\Q""" + kw.key + """\E""").r
}
+ // Convert the keyword into an case insensitive Parser
+ // It uses an more precisely matching mode for suffix keywords.
+ def suffixKeyword2Parser(kw: Keyword): Parser[String] = {
+ ("""(?i)\Q""" + kw.key + """\E(?![_$a-zA-Z0-9])""").r
Review comment:
We should match also Unicode letters, not just ASCII (`a-zA-Z`).
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