ANY,ALL operator ....

Question

Hi ,
Can you show the difference between ANY and ALL operator in Oracle10g...?????
I have written the following two sets of sql queries against the emp table of SCOTT schema.... The results were not different....
select ename from emp where sal>any(select min(sal) from emp)
select ename from emp where sal>all(select min(sal) from emp)
and
select ename from emp where sal>any(2000,2200)
select ename from emp where sal>all(2000,2200)
In pairs the results are the same.....
In the Oracle Doc there are the following notes.....
ANY
Compares a value to each value in a list or returned by a query. Must be
preceded by =, !=, >, <, <=, >=. Can be followed by any expression or
subquery that returns one or more values.
Evaluates to FALSE if the query returns no rows.
ALL
Compares a value to every value in a list or returned by a query. Must be
preceded by =, !=, >, <, <=, >=. Can be followed by any expression or
subquery that returns one or more values.
Evaluates to TRUE if the query returns no rows.
Many thanks....
Sim

Answer 1

Or simply:
sal > any(100,200) means salary greater than ANY of the entry in the list.
Means greater than the least.
<br>
sal > all(100,200) means salary greater than ALL of the entry in the list.
Means greater than the greatest.
Taking AVG(SAL) as 100:
select ename from emp where sal>any(select avg(sal) from emp)  =>
  sal > ANY(100) =>   sal > 100
<br>
select ename from emp where sal>all(select avg(sal) from emp)  =>
  sal > all(100) =>   sal > 100
They means samething, so same result.
So if the list contains only one entry, ANY and ALL means the
same.Moreover in that case you dont need ANY or
ALL.Simply the comparison operator will do the samething.