beliefer commented on code in PR #38867:
URL: https://github.com/apache/spark/pull/38867#discussion_r1060503592
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/collectionOperations.scala:
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@@ -4601,6 +4601,231 @@ case class ArrayExcept(left: Expression, right:
Expression) extends ArrayBinaryL
newLeft: Expression, newRight: Expression): ArrayExcept = copy(left =
newLeft, right = newRight)
}
+@ExpressionDescription(
+ usage = "_FUNC_(x, pos, val) - Places val into index pos of array x (array
indices start at 1)",
+ examples = """
+ Examples:
+ > SELECT _FUNC_(array(1, 2, 3, 4), 5, 5);
+ [1,2,3,4,5]
Review Comment:
Yes. This is an issue indeed before we discuss how to do it.
These legacy functions let users know each array function starts at 0, if we
change the new functions based on 1, it will cause confusion.
Another way, the legacy functions is a mistake indeed.
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