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