ClickHouse/tests/integration/test_distributed_backward_compatability/test.py

import pytest

from helpers.cluster import ClickHouseCluster

cluster = ClickHouseCluster(__file__)

node_old = cluster.add_instance('node1', main_configs=['configs/remote_servers.xml'], image='yandex/clickhouse-server',
                                tag='19.17.8.54', stay_alive=True, with_installed_binary=True)
node_new = cluster.add_instance('node2', main_configs=['configs/remote_servers.xml'])


@pytest.fixture(scope="module")
def started_cluster():
    try:
        cluster.start()

        for node in (node_old, node_new):
            node.query("CREATE TABLE local_table(id UInt32, val String) ENGINE = MergeTree ORDER BY id")

        node_old.query("INSERT INTO local_table VALUES (1, 'node1')")
        node_new.query("INSERT INTO local_table VALUES (2, 'node2')")

        node_old.query(
            "CREATE TABLE distributed(id UInt32, val String) ENGINE = Distributed(test_cluster, default, local_table)")
        node_new.query(
            "CREATE TABLE distributed(id UInt32, val String) ENGINE = Distributed(test_cluster, default, local_table)")

        yield cluster

    finally:
        cluster.shutdown()


def test_distributed_in_tuple(started_cluster):
    query1 = "SELECT count() FROM distributed WHERE (id, val) IN ((1, 'node1'), (2, 'a'), (3, 'b'))"
    query2 = "SELECT sum((id, val) IN ((1, 'node1'), (2, 'a'), (3, 'b'))) FROM distributed"
    assert node_old.query(query1) == "1\n"
    assert node_old.query(query2) == "1\n"
    assert node_new.query(query1) == "1\n"
    assert node_new.query(query2) == "1\n"

    large_set = '(' + ','.join([str(i) for i in range(1000)]) + ')'
    query3 = "SELECT count() FROM distributed WHERE id IN " + large_set
    query4 = "SELECT sum(id IN {}) FROM distributed".format(large_set)
    assert node_old.query(query3) == "2\n"
    assert node_old.query(query4) == "2\n"
    assert node_new.query(query3) == "2\n"
    assert node_new.query(query4) == "2\n"