-- Tags: shard -- make the order static SET max_threads = 1; -- remote(system.one) SELECT 'remote(system.one)'; SELECT * FROM remote('127.0.0.1', system.one); SELECT * FROM remote('127.0.0.{1,2}', system.one); SELECT _shard_num, * FROM remote('127.0.0.1', system.one); SELECT _shard_num, * FROM remote('127.0.0.{1,2}', system.one) order by _shard_num; SELECT _shard_num, * FROM remote('127.0.0.{1,2}', system.one) WHERE _shard_num = 1; -- dist_1 using test_shard_localhost SELECT 'dist_1'; CREATE TABLE mem1 (key Int) Engine=Memory(); CREATE TABLE dist_1 AS mem1 Engine=Distributed(test_shard_localhost, currentDatabase(), mem1); SELECT _shard_num FROM dist_1 order by _shard_num; INSERT INTO mem1 VALUES (10); SELECT _shard_num FROM dist_1 order by _shard_num; SELECT _shard_num, key FROM dist_1 order by _shard_num; SELECT key FROM dist_1; INSERT INTO dist_1 VALUES (20); SELECT _shard_num FROM dist_1 order by _shard_num; SELECT _shard_num, key FROM dist_1 order by _shard_num, key; SELECT key FROM dist_1; -- dist_2 using test_cluster_two_shards_localhost SELECT 'dist_2'; CREATE TABLE mem2 (key Int) Engine=Memory(); CREATE TABLE dist_2 AS mem2 Engine=Distributed(test_cluster_two_shards_localhost, currentDatabase(), mem2); SELECT _shard_num FROM dist_2 order by _shard_num; INSERT INTO mem2 VALUES (100); SELECT _shard_num FROM dist_2 order by _shard_num; SELECT _shard_num, key FROM dist_2 order by _shard_num, key; SELECT key FROM dist_2; -- multiple _shard_num SELECT 'remote(Distributed)'; SELECT _shard_num, key FROM remote('127.0.0.1', currentDatabase(), dist_2) order by _shard_num, key; -- JOIN system.clusters SELECT 'JOIN system.clusters'; SELECT a._shard_num, a.key, b.host_name, b.host_address IN ('::1', '127.0.0.1'), b.port FROM (SELECT *, _shard_num FROM dist_1) a JOIN system.clusters b ON a._shard_num = b.shard_num WHERE b.cluster = 'test_cluster_two_shards_localhost'; SELECT _shard_num, key, b.host_name, b.host_address IN ('::1', '127.0.0.1'), b.port FROM dist_1 a JOIN system.clusters b ON _shard_num = b.shard_num WHERE b.cluster = 'test_cluster_two_shards_localhost'; -- { serverError 403 } -- rewrite does not work with aliases, hence Missing columns (47) SELECT a._shard_num, key FROM dist_1 a; -- { serverError 47; } -- the same with JOIN, just in case SELECT a._shard_num, a.key, b.host_name, b.host_address IN ('::1', '127.0.0.1'), b.port FROM dist_1 a JOIN system.clusters b ON a._shard_num = b.shard_num WHERE b.cluster = 'test_cluster_two_shards_localhost'; -- { serverError 47; } SELECT 'dist_3'; CREATE TABLE mem3 (key Int, _shard_num String) Engine=Memory(); CREATE TABLE dist_3 AS mem3 Engine=Distributed(test_shard_localhost, currentDatabase(), mem3); INSERT INTO mem3 VALUES (100, 'foo'); SELECT * FROM dist_3; SELECT _shard_num, * FROM dist_3 order by _shard_num;