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_r217892719
##########
File path:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/expressions/ExpressionParser.scala
##########
@@ -42,7 +42,8 @@ object ExpressionParser extends JavaTokenParsers with
PackratParsers {
// Convert the keyword into an case insensitive Parser
implicit def keyword2Parser(kw: Keyword): Parser[String] = {
- ("""(?i)\Q""" + kw.key + """\E""").r
+ ("""(?i)\Q""" + kw.key +
+
"""\E(?![_$a-zA-Z0-9\u005f\u0024\u0061-\u007a\u0041-\u005a\u0030-\u0039])""").r
Review comment:
I'll replace `a-zA-Z0-9\u005f\u0024\u0061-\u007a\u0041-\u005a\u0030-\u0039`
by `\p{javaJavaIdentifierPart}` which matches all valid characters of Java
identifiers.
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