[GitHub] [spark] nvander1 opened a new pull request #24761: [SPARK-27905] [SQL] Add higher order function 'forall'

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nvander1 opened a new pull request #24761: [SPARK-27905] [SQL] Add higher order function 'forall'
URL: https://github.com/apache/spark/pull/24761
 
 
   ## What changes were proposed in this pull request?
   
   Add's the higher order function `forall`, which tests an array to see if a predicate holds for every element.
   The function is implemented in `org.apache.spark.sql.catalyst.expressions.ArrayForAll`.
   The function is added to the function registry under the pretty name `forall`.
   
   ## How was this patch tested?
   
   I've added appropriate unit tests for the new ArrayForAll expression in
   `sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/HigherOrderFunctionsSuite.scala`.
   
   Also added tests for the function in `sql/core/src/test/scala/org/apache/spark/sql/DataFrameFunctionsSuite.scala`.
   
   Not sure who is best to ask about this PR so:
    @HyukjinKwon @rxin @gatorsmile @ueshin @srowen @hvanhovell @gatorsmile 

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