单选题查询出EMP表中1982年及以后入职的员工信息（）（注：字段hiredate为入职日期，数据类型为DATE型）Aselect * from emp where hiredate='19820101';Bselect * from emp where hiredate=to_char('19820101','YYYYMMDD');Cselect * from emp where to_date(hiredate,'YYYYMMDD')='19820101';Dselect * from emp where to_char(hiredate,'YYYYMMDD')='19820101';
单选题
查询出EMP表中1982年及以后入职的员工信息（）（注：字段hiredate为入职日期，数据类型为DATE型）
A
select * from emp where hiredate>='19820101';
B
select * from emp where hiredate>=to_char('19820101','YYYYMMDD');
C
select * from emp where to_date(hiredate,'YYYYMMDD')>='19820101';
D
select * from emp where to_char(hiredate,'YYYYMMDD')>='19820101';
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