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https://issues.apache.org/jira/browse/FLINK-6893?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16090992#comment-16090992
]
ASF GitHub Bot commented on FLINK-6893:
---------------------------------------
Github user wuchong commented on a diff in the pull request:
https://github.com/apache/flink/pull/4128#discussion_r127868565
--- Diff:
flink-libraries/flink-table/src/test/scala/org/apache/flink/table/expressions/ScalarFunctionsTest.scala
---
@@ -352,6 +352,14 @@ class ScalarFunctionsTest extends ScalarTypesTestBase {
"Flink~~~~xx")
}
+ @Test
+ def testBin(): Unit = {
+ testSqlApi("BIN(12)", "1100")
+ testSqlApi("BIN(10)", "1010")
+ testSqlApi("BIN(0)", "0")
+
testSqlApi("BIN(f32)","1111111111111111111111111111111111111111111111111111111111111111")
+ }
+
--- End diff --
Would be better to add validation tests to `ScalarFunctionsValidationTest`
to check the expected exception for unsupported operand types.
> Add BIN supported in SQL
> ------------------------
>
> Key: FLINK-6893
> URL: https://issues.apache.org/jira/browse/FLINK-6893
> Project: Flink
> Issue Type: Sub-task
> Components: Table API & SQL
> Affects Versions: 1.4.0
> Reporter: sunjincheng
> Assignee: sunjincheng
>
> BIN(N) Returns a string representation of the binary value of N, where N is a
> longlong (BIGINT) number. This is equivalent to CONV(N,10,2). Returns NULL if
> N is NULL.
> * Syntax:
> BIN(num)
> * Arguments
> **num: a long/bigint value
> * Return Types
> String
> * Example:
> BIN(12) -> '1100'
> * See more:
> ** [MySQL|
> https://dev.mysql.com/doc/refman/5.7/en/string-functions.html#function_bin]
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