mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-16 12:44:42 +00:00
73 lines
2.6 KiB
Python
73 lines
2.6 KiB
Python
from contextlib import contextmanager
|
|
|
|
import pytest
|
|
|
|
from helpers.cluster import ClickHouseCluster
|
|
|
|
cluster = ClickHouseCluster(__file__)
|
|
|
|
node1 = cluster.add_instance('node1', main_configs=['configs/remote_servers.xml'])
|
|
node2 = cluster.add_instance('node2', main_configs=['configs/remote_servers.xml'])
|
|
|
|
@pytest.fixture(scope="module")
|
|
def started_cluster():
|
|
try:
|
|
cluster.start()
|
|
|
|
for node in (node1, node2):
|
|
node.query('''
|
|
CREATE TABLE local_table(id UInt32, val String) ENGINE = MergeTree ORDER BY id;
|
|
CREATE TABLE local_table_2(id UInt32, val String) ENGINE = MergeTree ORDER BY id;
|
|
''')
|
|
|
|
node1.query("INSERT INTO local_table VALUES (1, 'node1')")
|
|
node2.query("INSERT INTO local_table VALUES (2, 'node2')")
|
|
|
|
node1.query('''
|
|
CREATE TABLE distributed_table(id UInt32, val String) ENGINE = Distributed(test_cluster, default, local_table);
|
|
CREATE TABLE distributed_table_2(id UInt32, val String) ENGINE = Distributed(test_cluster, default, local_table_2);
|
|
CREATE TABLE merge_table(id UInt32, val String) ENGINE = Merge(default, '^distributed_table')
|
|
''')
|
|
|
|
yield cluster
|
|
|
|
finally:
|
|
cluster.shutdown()
|
|
|
|
|
|
def test_global_in(started_cluster):
|
|
assert node1.query("SELECT val FROM distributed_table WHERE id GLOBAL IN (SELECT toUInt32(3 - id) FROM local_table)").rstrip() \
|
|
== 'node2'
|
|
|
|
assert node1.query("SELECT val FROM merge_table WHERE id GLOBAL IN (SELECT toUInt32(3 - id) FROM local_table)").rstrip() \
|
|
== 'node2'
|
|
|
|
|
|
def test_filtering(started_cluster):
|
|
|
|
assert node1.query("SELECT id, val FROM merge_table WHERE id = 1").rstrip() == '1\tnode1'
|
|
|
|
assert node1.query("SELECT id + 1, val FROM merge_table WHERE id = 1").rstrip() == '2\tnode1'
|
|
|
|
assert node1.query("SELECT id + 1 FROM merge_table WHERE val = 'node1'").rstrip() == '2'
|
|
|
|
assert node1.query("SELECT id + 1, val FROM merge_table PREWHERE id = 1 WHERE _table != '_dummy'").rstrip() == '2\tnode1'
|
|
|
|
assert node1.query("SELECT count() FROM merge_table PREWHERE id = 1").rstrip() == '1'
|
|
|
|
|
|
def test_select_table_name_from_merge_over_distributed(started_cluster):
|
|
|
|
node1.query("INSERT INTO local_table_2 VALUES (1, 'node1')")
|
|
node2.query("INSERT INTO local_table_2 VALUES (2, 'node2')")
|
|
|
|
node1.query("select _table == 'distributed_table' from merge_table")
|
|
node1.query("select * from (select _table == 'distributed_table' from merge_table limit 1)")
|
|
|
|
|
|
if __name__ == '__main__':
|
|
with contextmanager(started_cluster)() as cluster:
|
|
for name, instance in cluster.instances.items():
|
|
print name, instance.ip_address
|
|
raw_input("Cluster created, press any key to destroy...")
|