in paimon-trino-common/src/main/java/org/apache/paimon/trino/TrinoTableOptions.java [91:94]
public static List<String> getPartitionedKeys(Map<String, Object> tableProperties) {
List<String> partitionedKeys = (List<String>) tableProperties.get(PARTITIONED_BY_PROPERTY);
return partitionedKeys == null ? ImmutableList.of() : ImmutableList.copyOf(partitionedKeys);
}