Reply Separator
Author: Sony kristanto <[EMAIL PROTECTED]>
Date: 1/30/2003 6:22 PM
Hi Gary,
I wonder why you didn't use :
select * from tester2 where whatever is null;
Null values is extremely empty.
Rgrds,
Sony
> -Original Mess
x27; ?
>From: "Whittle Jerome Contr NCI" <[EMAIL PROTECTED]>
>To: <[EMAIL PROTECTED]>
>CC: <[EMAIL PROTECTED]>
>Subject: RE: comparing null values
>Date: Thu, 30 Jan 2003 13:15:33 -0600
>
>Gary,
>
>Null has no value. It can't be like
Hi Gary,
I wonder why you didn't use :
select * from tester2 where whatever is null;
Null values is extremely empty.
Rgrds,
Sony
> -Original Message-
> From: Gary Jackson [SMTP:[EMAIL PROTECTED]]
> Sent: Friday, January 31, 2003 12:42 AM
> To: Multiple recipients
D]>
>To: <[EMAIL PROTECTED]>
>CC: <[EMAIL PROTECTED]>
>Subject: RE: comparing null values
>Date: Thu, 30 Jan 2003 13:15:33 -0600
>
>Gary,
>
>Null has no value. It can't be like or not like anything. If you want to
>see the null you'll need to add OR IS N
uot; <[EMAIL PROTECTED]>
>To: <[EMAIL PROTECTED]>
>CC: <[EMAIL PROTECTED]>
>Subject: RE: comparing null values
>Date: Thu, 30 Jan 2003 13:15:33 -0600
>
>Gary,
>
>Null has no value. It can't be like or not like anything. If you want to
>see the
Why is this?? If I know that value X has no value, I certainly know that
value X is not like '%STU%' ?
From: "Whittle Jerome Contr NCI" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
CC: <[EMAIL PROTECTED]>
Subject: RE: comparing null values
Date:
hat I seem unable to use 'like' and 'not like'
on columns containing null values. (I am unable to find information
regarding this on MetaLink.)
For example:
SQL> select * from tester2;
COL1 COL2 WHATEVER
11STUFF
22STUFF
33
44
SQ
unable to use 'like' and 'not like'
on columns containing null values. (I am unable to find information
regarding this on MetaLink.)
For example:
SQL> select * from tester2;
COL1 COL2 WHATEVER
11STUFF
22STUFF
33
44
SQL> selec
'like' and 'not like'
on columns containing null values. (I am unable to find information
regarding this on MetaLink.)
For example:
SQL> select * from tester2;
COL1 COL2 WHATEVER
11STUFF
22STUFF
33
44
SQL> select * from tester2 where w
Title: RE: comparing null values
Gary I think this goes back to the classic definition of NULL. NULL means "unknown value". Therefore you can't say anything definite about the value. So it is not equal to anything or like anything, period. It is "IS NULL" from
Title: RE: comparing null values
Gary,
Null has no value. It can't be like or not like anything. If you want to see the null you'll need to add OR IS NULL to your Where clause.
Jerry Whittle
ASIFICS DBA
NCI Information Systems Inc.
[EMAIL PROTECTED]
618-622-4145
---
ents of list ORACLE-L" <[EMAIL PROTECTED]>
Sent: Thursday, January 30, 2003 12:41 PM
> Can anyone explain why it is that I seem unable to use 'like' and 'not
like'
> on columns containing null values. (I am unable to find information
> regarding this on Met
Can anyone explain why it is that I seem unable to use 'like' and 'not like'
on columns containing null values. (I am unable to find information
regarding this on MetaLink.)
For example:
SQL> select * from tester2;
COL1 COL2 WHATEVER
11STUFF
2
Title: RE: NOT IN with NULL-values
Sorry Frank,
I tried that without null. I cross checked and found results for not in similar to yours, as explained by other list members. null is not equal to another value, or null itself.
rgds
amar
-Original Message-
From: Kuijten, F. (Frank
Title: RE: NOT IN with NULL-values
Yes I had a null value in am91.
rgds
amar
-Original Message-
From: Kuijten, F. (Frank) [mailto:[EMAIL PROTECTED]]
Sent: Monday, October 29, 2001 6:35 PM
To: Multiple recipients of list ORACLE-L
Subject: RE: NOT IN with NULL-values
Amar
Larry G. Elkins
[EMAIL PROTECTED]
214.954.1781
> -Original Message-
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Kuijten, F.
> (Frank)
> Sent: Monday, October 29, 2001 8:35 AM
> To: Multiple recipients of list ORACLE-L
> Subject: RE: NOT IN with NULL-values
lue 3) cannot be compared to the 'null' value and return a
'true' value. Because the 'null' exists, it throws the whole query away -
as evidenced by #3 where you discard null values.
#2 does not work because you did not co-relate the two queries together.
Change it
Amar,
Thanks.
One question : Do you have a NULL value in the 'am91' table ?
Because that's where my problem is.
Without the NULL value, all queries are giving the expected results.
Greetings,
Frank
-Original Message-
Sent: maandag 29 oktober 2001 14:50
To: Multiple recipients
Title: RE: NOT IN with NULL-values
I tried your example at my end. The both the NOT IN stmts do give me the result. NOT EXITS is functioning properly as there are records existing in sub-query. check the last stmt below for this. I see no bugs or issues. check this:
-select * from am90
Hello,
I'm running the SQL-statements below :
SQL> create table fk_ldm1 (id number(10) not null);
Table created.
SQL> insert into fk_ldm1 values(1);
1 row created.
SQL> insert into fk_ldm1 values(2);
1 row created.
SQL> insert into fk_ldm1 values(3);
1 row created.
SQL> insert into fk_ldm1 value
nstead of nulls in all
columns that would supposedly allow null values...
they are using visual c++ and they say that they cannot make visual c++
retreive null values...
i am very hesitant in implementing this...
i have no knowledge whatsoever of visual c++ and don't know if this is
true...
slightly OT: visual c++ and null values
>
> Stefan,
>
> OK. can you help with a solution? sounds like you have experience...
> :)
>
> How about some coding examples?
>
> Tom Mercadante
> Oracle Certified Professional
>
>
> -Original Message-
>
Stefan,
I'll disagree. VC++ can handle null values, it's a question of whether or
not the developer can handle them. I'll make the assumption that they are using
PRO*C vs. OCI and during execution you do get an Oracle error stating that there
is a null value if you d
strong language, but the statement that VC++ isn't able to
retrieve NULL values is plain bullshit.
| Regards, |
| Stefan Jahnke |
| BOV AG |
| @:D2 Vodafone, Abt.: FBOM |
| Tel.: 0211/533
9, 2001 9:00 AM
To: Multiple recipients of list ORACLE-L
hello!
our developers here are requesting that I put defaults (' ' for
chars/varchars, 0 for numbers, etc) in place instead of nulls in all
columns that would supposedly allow null values...
they are using visual c++ and they say th
uesting that I put defaults (' ' for
>chars/varchars, 0 for numbers, etc) in place instead of nulls in all
>columns that would supposedly allow null values...
>they are using visual c++ and they say that they cannot make visual c++
>retreive null values...
>i am very h
Hi,
sorry for the strong language, but the statement that VC++ isn't able to
retrieve NULL values is plain bullshit.
| Regards, |
| Stefan Jahnke |
| BOV AG |
| @:D2 Vodafone, Abt.: FBOM |
| Tel.: 0211/533
If you use ODBC (CTransaction + CRecordset in MFC) there is no problem to
handle null values.
It isn't good idea to put 0 (zero) instead of null in number column.
JP
On Fri 19. October 2001 15:00, you wrote:
> hello!
>
> our developers here are requesting that I put defaults (&
of list ORACLE-L
hello!
our developers here are requesting that I put defaults (' ' for
chars/varchars, 0 for numbers, etc) in place instead of nulls in all
columns that would supposedly allow null values...
they are using visual c++ and they say that they cannot make visual c++
ret
hello!
our developers here are requesting that I put defaults (' ' for
chars/varchars, 0 for numbers, etc) in place instead of nulls in all
columns that would supposedly allow null values...
they are using visual c++ and they say that they cannot make visual c++
retreive null values...
Roland,
The 'nvl' function in the code you posted does handle null values,
converting nulls to ' 0' before turning them into a character
via to_char.
You should actually remove the space in ' 0', as it is forcing
an implicit conversion back to a number for to_c
Hallo you DBA's:
How can I modify in this script to make it handle also null values. This script only
handles 0-values.
Hope anyone can help me with this.
vOWNERSHIP_NO:= rpad(to_char(nvl(recCursor.OWNERSHIP_NO,' 0')),2,' ');
Thanks in advance
Roland Sköldblom
-
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