[GitHub] yanghua commented on a change in pull request #6473: [FLINK-9999] [table] Add ISNUMERIC supported in Table API/SQL
yanghua commented on a change in pull request #6473: [FLINK-] [table] Add ISNUMERIC supported in Table API/SQL URL: https://github.com/apache/flink/pull/6473#discussion_r209441697 ## File path: flink-libraries/flink-table/src/test/scala/org/apache/flink/table/expressions/ScalarFunctionsTest.scala ## @@ -450,6 +450,63 @@ class ScalarFunctionsTest extends ScalarTypesTestBase { "") } + @Test + def testIsNumeric(): Unit = { Review comment: There is one here: ``` testAllApis( "0.123a".isNumeric(), "'0.123a'.isNumeric", "ISNUMERIC('0.123a')", "0") ``` I don't add too much at the moment, but more coverage is always necessary. I want to wait until I can confirm that this function is necessary. This is an automated message from the Apache Git Service. To respond to the message, please log on GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services
[GitHub] yanghua commented on a change in pull request #6473: [FLINK-9999] [table] Add ISNUMERIC supported in Table API/SQL
yanghua commented on a change in pull request #6473: [FLINK-] [table] Add ISNUMERIC supported in Table API/SQL URL: https://github.com/apache/flink/pull/6473#discussion_r209441509 ## File path: flink-libraries/flink-table/src/main/scala/org/apache/flink/table/expressions/stringExpressions.scala ## @@ -358,6 +358,29 @@ case class Rpad(text: Expression, len: Expression, pad: Expression) } } +case class IsNumeric(child: Expression) extends UnaryExpression with InputTypeSpec { + + override private[flink] def expectedTypes: Seq[TypeInformation[_]] = Seq(STRING_TYPE_INFO) + + override private[flink] def resultType: TypeInformation[_] = INT_TYPE_INFO + + override private[flink] def validateInput(): ValidationResult = { +if (child.resultType == STRING_TYPE_INFO) { Review comment: Here I think of it as a string type scalar function, the value represented by this string can be int/bigInt/double and so on. This is an automated message from the Apache Git Service. To respond to the message, please log on GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services