dongjoon-hyun commented on a change in pull request #27836: [SPARK-31009][SQL]
Support json_object_keys function
URL: https://github.com/apache/spark/pull/27836#discussion_r405154076
##########
File path:
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/JsonExpressionsSuite.scala
##########
@@ -790,4 +790,24 @@ class JsonExpressionsSuite extends SparkFunSuite with
ExpressionEvalHelper with
checkDecimalInfer(_, """struct<d:decimal(7,3)>""")
}
}
+
+ test("json_object_keys") {
+ Seq(
+ ("{}", Seq.empty[UTF8String]),
+ ("""{"key": 1}""", Seq("key")),
+ ("""{"key": "value", "key2": 2}""", Seq("key", "key2")),
+ ("""{"arrayKey": [1, 2, 3]}""", Seq("arrayKey")),
+ ("""{"key":[1,2,3,{"key":"value"},[1,2,3]]}""", Seq("key")),
+ ("""{"f1":"abc","f2":{"f3":"a", "f4":"b"}}""", Seq("f1", "f2")),
+ ("""{"k1": [1, 2, {"key": 5}], "k2": {"key2": [1, 2]}}""", Seq("k1",
"k2")),
+ ("{[1,2]}", null),
+ ("""{"key": 45, "random_string"}""", null),
+ ("", null),
+ ("[]", null),
+ ("""[{"key": "JSON"}]""", null)
Review comment:
Could you sort the test cases a little meaningfully, please?
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