单项选择题
A.DESCRIBE B.SHOW FULL COLUMNS C.SHOW COLUMNS D.SHOW CREATE TABLE
A.ALTER TABLE goods ADD num INT AFTER name B.ALTER TABLE goods ADD num INT FIRST C.ALTER TABLE goods ADD num INT D.ALTER TABLE goods ADD(num INT)
A.ALTER TABLE t1 RENAME re_test B.ALTER TABLE t1 RENAMEAS re_test C.RENAME TABLE t1 re_test D.RENAME TABLE t1 TO re_test