如何在Oracle中使用投影条件作为月份名称从表中提取元组？

Question

I have a table 'emp' whose schema is defined as(empno, ename,hiredate) ,I am trying to project out the names of all those employees who joined in the moth of January , so for this I wrote the below query but it not printing any records ,It works fine if I don't use the where clause , else it is not working .

select ename from emp where ( to_char(to_date(extract(month from hiredate),'MM'),'MONTH')) like 'JANUARY'​

Please guide me where I am making mistake .

Answer 1

It is unnecessarily too complicated.

Try to run this select:

select hiredate,extract(month from hiredate) from emp 

Then if January is 1 from this select and there arent any mistakes, you can use:

select ename from emp where extract(month from hiredate)=1

Answer 2

Try this:

select ename from emp where ( to_char(to_date(extract(month from hiredate),'MONTH'),'MONTH')) like 'JANUARY'​