AngersZhuuuu commented on a change in pull request #26053: 
[SPARK-29379][SQL]SHOW FUNCTIONS  show '!=', '<>' , 'between', 'case'
URL: https://github.com/apache/spark/pull/26053#discussion_r335822035
 
 

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 File path: 
sql/core/src/test/scala/org/apache/spark/sql/execution/command/DDLSuite.scala
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 @@ -2064,7 +2064,7 @@ abstract class DDLSuite extends QueryTest with 
SQLTestUtils {
 
   test("show functions") {
     withUserDefinedFunction("add_one" -> true) {
-      val numFunctions = FunctionRegistry.functionSet.size.toLong
+      val numFunctions = FunctionRegistry.functionSet.size.toLong + 4L
 
 Review comment:
   > ah missed this one. We should use 
`FunctionsCommand.virtualOperators.length` to be future-proof.
   
   Good ideal, make it more clear. Done

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