set serialize_query_plan = 0;
drop table if exists t;
CREATE TABLE t(a UInt64, b UInt64) ENGINE = MergeTree ORDER BY a;

INSERT INTO t SELECT
    number,
    number
FROM numbers_mt(1000000);

SET enable_parallel_replicas = 1, parallel_replicas_local_plan = 1, max_parallel_replicas = 3, cluster_for_parallel_replicas = 'test_cluster_one_shard_three_replicas_localhost', parallel_replicas_for_non_replicated_merge_tree = 1;
SET prefer_localhost_replica = 1, enable_analyzer = 1;

EXPLAIN SYNTAX
SELECT replaceRegexpAll(explain, 'ReadFromRemoteParallelReplicas.*', 'ReadFromRemoteParallelReplicas')
FROM
(
    SELECT *
    FROM viewExplain('EXPLAIN', 'distributed = 1', (
        SELECT a
        FROM remote('127.0.0.{1,2}', currentDatabase(), t)
        GROUP BY a
    ))
)