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CREATE TABLE t1 (f1 INTEGER PRIMARY KEY) Engine=InnoDB;
SET SESSION wsrep_OSU_method = "RSU";
ALTER TABLE t1 ADD COLUMN f2 INTEGER;
SELECT COUNT(*) = 2 FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = 't1';
COUNT(*) = 2
1
SELECT COUNT(*) = 1 FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = 't1';
COUNT(*) = 1
1
INSERT INTO t1 VALUES (1);
SELECT COUNT(*) = 1 FROM t1;
COUNT(*) = 1
1
INSERT INTO t1 (f1) VALUES (2);
SELECT COUNT(*) = 1 FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = 't1';
COUNT(*) = 1
1
SELECT COUNT(*) = 2 FROM t1;
COUNT(*) = 2
1
DROP TABLE t1;
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