JackieTien97 commented on code in PR #14755:
URL: https://github.com/apache/iotdb/pull/14755#discussion_r1928152667
##########
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/relational/metadata/TableMetadataImpl.java:
##########
@@ -884,6 +894,28 @@ public static boolean isTwoTypeComparable(List<? extends
Type> argumentTypes) {
|| ((isNumericType(left) || isCharType(left)) && isUnknownType(right));
}
+ public static boolean areAllTypesSameAndComparable(List<? extends Type>
argumentTypes) {
+ if (argumentTypes == null || argumentTypes.isEmpty()) {
+ return true;
+ }
+ Type firstType = argumentTypes.get(0);
+ if (!firstType.isComparable()) {
+ return false;
+ }
+ return argumentTypes.stream().allMatch(type -> type.equals(firstType));
+ }
+
+ public static boolean isAllTypeComparable(List<? extends Type>
argumentTypes) {
+ Type firstType = argumentTypes.get(0);
+ boolean flag = true;
+ for (Type type : argumentTypes) {
+ if (!isTwoTypeComparable(Arrays.asList(firstType, type))) {
+ flag = false;
+ }
+ }
+ return flag;
+ }
+
Review Comment:
```suggestion
```
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