Comments on: ANY, SOME and ALL in Oracle

By: jan

jan — Tue, 12 Aug 2008 06:48:33 +0000

Anguang,
SELECT *
FROM emp
WHERE sal >=800 AND sal >=null;
This query can return rows. Why?

Optimization, as you can see with explain plan.
My guess: 800 is sorted higher as Null, so we’ll only test sal >=800.

Interesting question though.

Jan

By: Div Shah

Div Shah — Wed, 11 Jun 2008 10:28:49 +0000

Great Post. After 5 years I have understand real meaning and usefullness of any and all..

Hats Off

Thanks

By: Sanjeet Kumar

Sanjeet Kumar — Tue, 01 Apr 2008 11:21:46 +0000

please tell me the querey of ”

i want to details of that manager who have reported maximum no. of employees………from emp table.

By: sandip

sandip — Mon, 10 Sep 2007 09:18:02 +0000

Really it is very nice post , It clear my confusion between any and some.

By: Eddie Awad

Eddie Awad — Mon, 23 Apr 2007 05:55:59 +0000

anguang, sal >=null is meaningless. It's either sal is null or sal is not null.

By: anguang

anguang — Mon, 23 Apr 2007 00:44:00 +0000

What is the meaning of the following query?

SELECT * FROM emp WHERE NOT manager_id <> ALL(800,1600,null);

By: anguang

anguang — Mon, 23 Apr 2007 00:41:36 +0000

SELECT *
FROM emp
WHERE sal >=800 AND sal >=null;
This query can return rows. Why?

SELECT *
FROM emp
WHERE sal >=null;
This query can not return rows. Why?

By: Bala

Bala — Wed, 14 Mar 2007 14:55:10 +0000

Very very descriptive and useful… Hats Off…

By: Jaime Lupa

Jaime Lupa — Thu, 25 Jan 2007 17:24:14 +0000

Nice post, however I believe these operators make less readable a given query.

By: Eddie Awad

Eddie Awad — Wed, 10 Aug 2005 03:11:40 +0000

Robert,

Maybe you’re right. Maybe Oracle introduced these comparison operators just because other databases have it, I do not know. I do know however that SQL Server has similar [ANY/SOME](http://msdn.microsoft.com/library/default.asp?url=/library/en-us/tsqlref/ts_setu-sus_17jt.asp) and [ALL](http://msdn.microsoft.com/library/default.asp?url=/library/en-us/tsqlref/ts_aa-az_2fsc.asp) operators. I still want to prove that using ANY, for example, is slower than using >, < or = instead. I’ll put it on my to-do list.