DROP DATABASE IF EXISTS test_01109; CREATE DATABASE test_01109 ENGINE=Atomic; USE test_01109; CREATE TABLE t0 ENGINE=MergeTree() ORDER BY tuple() AS SELECT rowNumberInAllBlocks(), * FROM (SELECT toLowCardinality(arrayJoin(['exchange', 'tables']))); -- NOTE: database = currentDatabase() is not mandatory CREATE TABLE t1 ENGINE=Log() AS SELECT * FROM system.tables AS t JOIN system.databases AS d ON t.database=d.name; CREATE TABLE t2 ENGINE=MergeTree() ORDER BY tuple() AS SELECT rowNumberInAllBlocks() + (SELECT count() FROM t0), * FROM (SELECT arrayJoin(['hello', 'world'])); EXCHANGE TABLES t1 AND t3; -- { serverError 60 } EXCHANGE TABLES t4 AND t2; -- { serverError 60 } RENAME TABLE t0 TO t1; -- { serverError 57 } DROP TABLE t1; RENAME TABLE t0 TO t1; SELECT * FROM t1; SELECT * FROM t2; EXCHANGE TABLES t1 AND t2; SELECT * FROM t1; SELECT * FROM t2; RENAME TABLE t1 TO t1tmp, t2 TO t2tmp; RENAME TABLE t1tmp TO t2, t2tmp TO t1; SELECT * FROM t1; SELECT * FROM t2; DROP DATABASE IF EXISTS test_01109_other_atomic; DROP DATABASE IF EXISTS test_01109_ordinary; SET default_database_engine='Atomic'; CREATE DATABASE test_01109_other_atomic; SET default_database_engine='Ordinary'; CREATE DATABASE test_01109_ordinary; CREATE TABLE test_01109_other_atomic.t3 ENGINE=MergeTree() ORDER BY tuple() AS SELECT rowNumberInAllBlocks() + (SELECT max((*,*).1.1) + 1 FROM (SELECT (*,) FROM t1 UNION ALL SELECT (*,) FROM t2)), * FROM (SELECT arrayJoin(['another', 'db'])); CREATE TABLE test_01109_ordinary.t4 AS t1; EXCHANGE TABLES test_01109_other_atomic.t3 AND test_01109_ordinary.t4; -- { serverError 48 } EXCHANGE TABLES test_01109_ordinary.t4 AND test_01109_other_atomic.t3; -- { serverError 48 } EXCHANGE TABLES test_01109_ordinary.t4 AND test_01109_ordinary.t4; -- { serverError 48 } EXCHANGE TABLES t1 AND test_01109_other_atomic.t3; EXCHANGE TABLES t2 AND t2; SELECT * FROM t1; SELECT * FROM t2; SELECT * FROM test_01109_other_atomic.t3; SELECT * FROM test_01109_ordinary.t4; DROP DATABASE test_01109; DROP DATABASE test_01109_other_atomic; DROP DATABASE test_01109_ordinary;