题目内容:
有SQL语句:SELECTDISTINCT系号FROM教师WHERE 工资>=ALL(SELECT工资FROM教师WHERE系号="02")与如上语句等价的SQL语句是
A.SELECTDISTINCT系号FROM教师WHERE工资>=(SELECTMAX(工资)FROM教师WHERE系号="02") B.SELECTDISTINCT系号FROM教师WHERE工资>=(SELECTMIN(工资)FROM教师WHERE系号="02")
C.SELECTDISTINCT系号FROM教师WHERE工资>=(ANY(SELECT(工资)FROM教师WHERE系号="02")
D.SELECTDISTINCT系号FROM教师WHERE工资>=(SOME(SELECT(工资)FROM教师WHERE系号="02")
参考答案:
答案解析: