利用SQL语句,检索仓库中至少有一名职工的仓库信息,正确的命令是
A.SELECT * FROM 仓库表 WHERE IN;
(SELECT 仓库号 FROM 职工表)
B.SELECT * FROM 仓库表 WHERE NOT IN;
(SELECT 仓库号 FROM 职工表)
C.SELECT * FROM 仓库表 WHERE 仓库号 EXISTS;
(SELECT * FROM 职工表 WHERE 仓库号=仓库表.仓库号)
D.SELECT * FROM 仓库表 WHERE EXISTS;
(SELECT * FROM 职工表 WHERE 仓库号=仓库表.仓库号)