单选题:SQL中,和 AGE IN(20,22)语义相同的是:
SQL中,和 AGE IN(20,22)语义相同的是:
A.AGE<=22 AND AGE >=20
B.AGE <22 AND AGE >20
C.AGE =20 AND AGE =22
D.AGE =20 OR AGE =22
答案:D
A.AGE<=22 AND AGE >=20
B.AGE <22 AND AGE >20
C.AGE =20 AND AGE =22
D.AGE =20 OR AGE =22
答案:D