Github user tillrohrmann commented on a diff in the pull request:
https://github.com/apache/flink/pull/1821#discussion_r57896311
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/api/table/expressions/ExpressionParser.scala
---
@@ -59,6 +59,8 @@ object ExpressionParser extends JavaTokenParsers with
PackratParsers {
Literal(str.toInt)
} else if (str.endsWith("f") | str.endsWith("F")) {
Literal(str.toFloat)
+ } else if (str.endsWith(".")) {
--- End diff --
Seems a little bit like a hack to me. Ideally, you should design your
grammar such that you won't see the token `1.` if it is not a valid number
expression.
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