caicancai commented on code in PR #3909:
URL: https://github.com/apache/calcite/pull/3909#discussion_r1718469508
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core/src/main/java/org/apache/calcite/runtime/SqlFunctions.java:
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@@ -5682,11 +5682,17 @@ public static List mapEntries(Map<Object, Object> map) {
/** Support the MAP_KEYS function. */
public static List mapKeys(Map map) {
+ if (map.keySet().contains(null)) {
Review Comment:
I guess what you mean is that you want to check for null values when
checking parameters. My current implementation is based on spark.
If you need me to modify the implementation, I can accept it. This is just a
small change.
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