[GitHub] walterddr 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

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walterddr 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_r216891057
 
 

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 File path: flink-libraries/flink-table/src/main/scala/org/apache/flink/table/expressions/ExpressionParser.scala
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 @@ -45,6 +45,13 @@ object ExpressionParser extends JavaTokenParsers with PackratParsers {
     ("""(?i)\Q""" + kw.key + """\E""").r
   }
 
+  // Convert the keyword into an case insensitive Parser
+  // It uses an exact matching mode. scenes to be used:
+  // a keyword as a suffix no required parameter and not as a prefix
+  def keyword2ParserForSuffixButNotAsPrefix(kw: Keyword): Parser[String] = {
 
 Review comment:
   I felt like this should be by default applied to all Keywords when using `suffix`

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