gengliangwang commented on a change in pull request #34836:
URL: https://github.com/apache/spark/pull/34836#discussion_r765535002
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/collectionOperations.scala
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@@ -167,6 +167,71 @@ case class MapKeys(child: Expression)
copy(child = newChild)
}
+
+/**
+ * Returns an unordered array containing the keys of the map.
+ */
+@ExpressionDescription(
+ usage = "_FUNC_(map, key) - Returns true if the map contains the key.",
+ examples = """
+ Examples:
+ > SELECT _FUNC_(map(1, 'a', 2, 'b'), 1);
+ true
+ > SELECT _FUNC_(map(1, 'a', 2, 'b'), 3);
+ false
+ """,
+ group = "map_funcs",
+ since = "3.3.0")
+case class MapContainsKey(left: Expression, right: Expression)
Review comment:
Updated. PTAL
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