connection node_2; connection node_1; CREATE TABLE t1 (f1 INTEGER PRIMARY KEY AUTO_INCREMENT, f2 INTEGER); connection node_2; ALTER TABLE t1 ADD COLUMN f3 INTEGER; INSERT INTO t1 (f1, f2) VALUES (DEFAULT, 123);; connection node_1; CREATE UNIQUE INDEX i1 ON t1(f2);; connection node_2; INSERT INTO t1 (f1, f2) VALUES (DEFAULT, 234); SELECT COUNT(*) = 3 FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = 't1'; COUNT(*) = 3 1 SELECT COUNT(*) = 2 FROM INFORMATION_SCHEMA.STATISTICS WHERE TABLE_NAME = 't1'; COUNT(*) = 2 1 SELECT COUNT(*) = 2 FROM t1; COUNT(*) = 2 1 connection node_1; SELECT COUNT(*) = 3 FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = 't1'; COUNT(*) = 3 1 SELECT COUNT(*) = 2 FROM INFORMATION_SCHEMA.STATISTICS WHERE TABLE_NAME = 't1'; COUNT(*) = 2 1 SELECT COUNT(*) = 2 FROM t1; COUNT(*) = 2 1 DROP TABLE t1;