ASELECT num1 FROM tb1 WHERE num1 > ANY (SELECT num2 FROM tb2);
返回结果为:(1,9,18,27)
BSELECT num1 FROM tb1 WHERE num1 > ANY (SELECT num2 FROM tb2);
返回结果为:(9,18,27)
CSELECT num1 FROM tb1 WHERE num1 > ALL (SELECT num2 FROM tb2);
返回结果为空
DSELECT num1 FROM tb1 WHERE num1 > ALL (SELECT num2 FROM tb2);
返回结果为:27