OT: Re: NULL value

I remember doing C pgming for about 5 years when i started using oracle and argued about how in "real" world NULL is a legal value 0x00 why can't oracle be smart enough to handle that(back in late version 5 days) ;)

joe

"Gogala, Mladen" wrote:

> It's stored in the column because NULL != NULL. The only operators that
> can be applied to the NULL value are IS and IS NOT. Nothing else.
>
> -----Original Message-----
> Sent: Tuesday, October 10, 2000 7:26 AM
> To: Multiple recipients of list ORACLE-L
>
> Hi,
> I have a logical question, any one who can make it clear.
> create table a (x number(2) unique);
> insert into a values (null);
> 1 row created.
> insert into a values (null);
> 1 row created.
> Q:- I have a table 'A' have one field 'X' with unique constraint, so a
> unique index will be created for it. I inserted null into this field two
> times (or more then it).
>
> If null is a value, Why these null stored into table which have unique
> constraint?
> If null is not a VALUE then what it is?
> Is there some special character for NULL?
> If null is not a value why we have operators for null?
>
> Regards
>
> Muhammad Awais
> System Developer
> Paktel Ltd. Pakistan
> Mob. 0303 7757077
> (92-51) 111-222-111-282
>
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Received on Tue Oct 10 2000 - 15:06:01 CDT