twalthr commented on a change in pull request #6432: [FLINK-9970] Add ASCII
function for table/sql API
URL: https://github.com/apache/flink/pull/6432#discussion_r205511726
##########
File path:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/api/scala/expressionDsl.scala
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@@ -544,6 +544,12 @@ trait ImplicitExpressionOperations {
def overlay(newString: Expression, starting: Expression, length: Expression)
=
Overlay(expr, newString, starting, length)
+ /**
+ * Returns the numeric value of the leftmost character of the string str.
Review comment:
Which `str`? You mean the `the given expression` please see other docs for
the format that we use.
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