MaxCompute合并分区的语法是什么？

ALTER TABLE <tableName> MERGE [IF EXISTS] PARTITION(<predicate>) [, PARTITION(<predicate2>) ...] OVERWRITE PARTITION(<fullPartitionSpec>) [PURGE];

-- 示例：
+------------+------------+------------+------------+
| value      | ds         | hh         | mm         |
+------------+------------+------------+------------+
| 1          | 20181101   | 00         | 00         |
| 1          | 20181101   | 00         | 10         |
| 1          | 20181101   | 10         | 00         |
| 1          | 20181101   | 10         | 10         |
+------------+------------+------------+------------+
-- 合并所有满足hh='00' 的分区到hh='00'，mm='00'中。
ALTER TABLE intpstringstringstring MERGE PARTITION(hh='00') OVERWRITE PARTITION(ds='20181101', hh='00', mm='00');
-- 合并后：
ds=20181101/hh=00/mm=00
ds=20181101/hh=10/mm=00
ds=20181101/hh=10/mm=10

-- MERGE PARTITIONS允许指定多个谓词条件，示例如下，指定到具体分区下，合并剩余分区。
ALTER TABLE intpstringstringstring MERGE IF EXISTS 
PARTITION(ds='20181101', hh='00', mm='00'), partition(ds='20181101', hh='10', mm='00'),  PARTITION(ds='20181101', hh='10', mm='10') 
OVERWRITE PARTITION(ds='20181101', hh='00', mm='00') PURGE;