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https://issues.apache.org/jira/browse/FLINK-7814?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16478818#comment-16478818
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ASF GitHub Bot commented on FLINK-7814:
---------------------------------------
Github user xccui commented on a diff in the pull request:
https://github.com/apache/flink/pull/6027#discussion_r188895939
--- Diff:
flink-libraries/flink-table/src/test/scala/org/apache/flink/table/expressions/ScalarOperatorsTest.scala
---
@@ -406,5 +406,26 @@ class ScalarOperatorsTest extends
ScalarOperatorsTestBase {
"((((true) === true) || false).cast(STRING) + 'X ').trim",
"trueX")
testTableApi(12.isNull, "12.isNull", "false")
+
--- End diff --
I think we can use a separate test method for `Between`. Besides, some
validation tests can be added to
`org.apache.flink.table.expressions.validation.ScalarOperatorsValidationTest`.
> Add BETWEEN and NOT BETWEEN expression to Table API
> ---------------------------------------------------
>
> Key: FLINK-7814
> URL: https://issues.apache.org/jira/browse/FLINK-7814
> Project: Flink
> Issue Type: Improvement
> Components: Table API & SQL
> Affects Versions: 1.4.0
> Reporter: Fabian Hueske
> Assignee: Ruidong Li
> Priority: Minor
>
> * The Table API does not have a BETWEEN expression. BETWEEN is quite handy
> when defining join predicates for window joins.
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