caicancai commented on code in PR #3786:
URL: https://github.com/apache/calcite/pull/3786#discussion_r1590005412


##########
core/src/main/java/org/apache/calcite/runtime/SqlFunctions.java:
##########
@@ -5529,9 +5529,23 @@ public static List mapValues(Map map) {
 
   /** Support the MAP_CONTAINS_KEY function. */
   public static Boolean mapContainsKey(Map map, Object key) {
+    for (Object mapKey : map.keySet()) {
+      if (isNumericEqual(mapKey, key)) {
+        return true;
+      }
+    }
     return map.containsKey(key);
   }
 
+  private static boolean isNumericEqual(Object obj1, Object obj2) {
+    if (obj1 instanceof Number && obj2 instanceof Number) {
+      double num1 = ((Number) obj1).doubleValue();

Review Comment:
   Or convert BigDecimal for comparison, which one do you prefer?



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