cloud-fan commented on code in PR #38947:
URL: https://github.com/apache/spark/pull/38947#discussion_r1133450131
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/collectionOperations.scala:
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@@ -1399,6 +1399,151 @@ case class ArrayContains(left: Expression, right:
Expression)
copy(left = newLeft, right = newRight)
}
+// scalastyle:off line.size.limit
+@ExpressionDescription(
+ usage = """
+ _FUNC_(array, element) - Add the element at the beginning of the array
passed as first
+ argument. Type of element should be similar to type of the elements of
the array.
Review Comment:
We don't need to document the type coercion behavior in each function. We
have a dedicated doc to explain what "similar" type is:
https://spark.apache.org/docs/latest/sql-ref-ansi-compliance.html#type-promotion-and-precedence
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