单项选择题

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)