select * from emp where deptno=
select ename
select * from emp where comm>sal;
select * from emp where comm>sal*
select * from emp where (deptno=
select * from emp where (deptno=
select distinct job from emp where comm>
select * from emp where nvl(comm
select * from emp where hiredate= last_day(hiredate);
select * from emp where months_between(sysdate
select * from emp where hiredate<add_months(sysdate
select ename from emp where ename=initcap(ename);
select ename from emp where length(ename)=
Select ename from emp where ename not like
Select ename from emp where instr(ename
select substr(ename
Select replace(ename
Select ename
Select * from emp order by ename
Select ename from emp order by hiredate
Select ename
select ename
select ename
select * from emp where to_char(hiredate
select ename
select ename from emp where ename like
select ename from emp where instr(ename
Select months_between(sysdate
From:http://tw.wingwit.com/Article/program/Oracle/201311/18747.html