Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/21053#discussion_r181529978
--- Diff:
sql/core/src/test/scala/org/apache/spark/sql/DataFrameFunctionsSuite.scala ---
@@ -413,6 +413,78 @@ class DataFrameFunctionsSuite extends QueryTest with
SharedSQLContext {
)
}
+ test("element at function") {
--- End diff --
also the function is element_at, not "element at" ...
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