Github user gczsjdy commented on a diff in the pull request:
https://github.com/apache/spark/pull/16476#discussion_r95078909
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/functions.scala ---
@@ -1528,6 +1528,18 @@ object functions {
def factorial(e: Column): Column = withExpr { Factorial(e.expr) }
/**
+ * Returns the index of str in (str1, str2, ...) list or 0 if not found.
+ * It takes at least 2 parameters, and all parameters' types should be
subtypes of AtomicType.
+ *
+ * @group normal_funcs
+ * @since 2.2.0
+ */
+ @scala.annotation.varargs
+ def field(expr1: Column, expr2: Column, exprs: Column*): Column =
withExpr {
--- End diff --
Sure, I have removed this.
Still curious, is it inappropriate to be in Dataset API?
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