Copy one column to another

I have a table I need to make changes to. Dropping columns isn't my problem, but before I drop one of the columns I need to copy the values that aren't null to another existing column in the same table. So for psuedo-code it would be something like:

update Mapping Set SID = (select SMappingID from Mapping where SMappingID is not null)

I don't know if I should be doing this in a loop (which I'm not totally familiar with using) or if there is a better way to copy these values. If it helps my columns are -

ID (int, Not Null, PK)
SID (int, Not Null, FK)
PartID (int, Not Null, FK)
CompID (int, Not Null)
SMappingID (int, Null)

Quote:

Originally Posted by NamelessNumberheadMan

I have a table I need to make changes to. Dropping columns isn't my problem, but before I drop one of the columns I need to copy the values that aren't null to another existing column in the same table. So for psuedo-code it would be something like:

update Mapping Set SID = (select SMappingID from Mapping where SMappingID is not null)

I don't know if I should be doing this in a loop (which I'm not totally familiar with using) or if there is a better way to copy these values. If it helps my columns are -

ID (int, Not Null, PK)
SID (int, Not Null, FK)
PartID (int, Not Null, FK)
CompID (int, Not Null)
SMappingID (int, Null)

try:
update Mapping Set SID = SMappingID
where SMappingID IS NOT NULL|||

Quote:

Originally Posted by NamelessNumberheadMan

I have a table I need to make changes to. Dropping columns isn't my problem, but before I drop one of the columns I need to copy the values that aren't null to another existing column in the same table. So for psuedo-code it would be something like:

update Mapping Set SID = (select SMappingID from Mapping where SMappingID is not null)

I don't know if I should be doing this in a loop (which I'm not totally familiar with using) or if there is a better way to copy these values. If it helps my columns are -

ID (int, Not Null, PK)
SID (int, Not Null, FK)
PartID (int, Not Null, FK)
CompID (int, Not Null)
SMappingID (int, Null)

The query is simple:

UPDATE TABLENAME
SET NEWCOLUMN = SOURCECOLUMN WHERE SOURCECOLUMN IS NOT NULL.

Thanks.

Copy db - lose login mapping

Whenever I copy my production db back to my development server i lose the
user mapping for my app account and have to drop the db user, then remap the
login to the correct db. Then I have to reassign permissions to the user.
How can I prevent this from happening?
Thanks
Hi
http://dimantdatabasesolutions.blogspot.com/2007/04/sql-or-windows-authentication.html
"ken s" <kens@.discussions.microsoft.com> wrote in message
news:4B16A51F-FAD3-4D86-8D5D-1C0A03DBD660@.microsoft.com...
> Whenever I copy my production db back to my development server i lose the
> user mapping for my app account and have to drop the db user, then remap
> the
> login to the correct db. Then I have to reassign permissions to the user.
> How can I prevent this from happening?
> Thanks
>

Copy db - lose login mapping

Whenever I copy my production db back to my development server i lose the
user mapping for my app account and have to drop the db user, then remap the
login to the correct db. Then I have to reassign permissions to the user.
How can I prevent this from happening?
ThanksHi
http://dimantdatabasesolutions.blogspot.com/2007/04/sql-or-windows-authentication.html
"ken s" <kens@.discussions.microsoft.com> wrote in message
news:4B16A51F-FAD3-4D86-8D5D-1C0A03DBD660@.microsoft.com...
> Whenever I copy my production db back to my development server i lose the
> user mapping for my app account and have to drop the db user, then remap
> the
> login to the correct db. Then I have to reassign permissions to the user.
> How can I prevent this from happening?
> Thanks
>sqlsql

Copy db - lose login mapping

Whenever I copy my production db back to my development server i lose the
user mapping for my app account and have to drop the db user, then remap the
login to the correct db. Then I have to reassign permissions to the user.
How can I prevent this from happening?
ThanksThat's because the info to tie the user to the login is gone - the
users are orphaned. There is an sp you can use to fix orphaned users.
I am not where I can look it up but I have a SQL script that takes
care of mapping my users to the logins. I am assuming the logins and
users are the same on both systems. You can also check the
knowledgebase and look at the information on moving users and keeping
thier passwords, etc. when they move.
On Fri, 21 Dec 2007 15:05:00 -0800, ken s
<kens@.discussions.microsoft.com> wrote:

>Whenever I copy my production db back to my development server i lose the
>user mapping for my app account and have to drop the db user, then remap th
e
>login to the correct db. Then I have to reassign permissions to the user.
>How can I prevent this from happening?
>Thanks
>|||Hi
http://dimantdatabasesolutions.blog...on.
html
"ken s" <kens@.discussions.microsoft.com> wrote in message
news:4B16A51F-FAD3-4D86-8D5D-1C0A03DBD660@.microsoft.com...
> Whenever I copy my production db back to my development server i lose the
> user mapping for my app account and have to drop the db user, then remap
> the
> login to the correct db. Then I have to reassign permissions to the user.
> How can I prevent this from happening?
> Thanks
>

Copy Database

I am trying to copy a 125GB .mdf database file to a 250GB usb hard drive. When I drag and drop the file it tells me "insufficient amount of space" even though the hard drive has plenty of storage. Please help
Hi,
Can you please post your query to Windows 2000 public group.
Thanks
Hari
MCDBA
"Johnson" <anonymous@.discussions.microsoft.com> wrote in message
news:97CC8EA4-9B6E-422C-AB0A-A017FBE603BB@.microsoft.com...
> I am trying to copy a 125GB .mdf database file to a 250GB usb hard drive.
When I drag and drop the file it tells me "insufficient amount of space"
even though the hard drive has plenty of storage. Please help

Copy Database

I am trying to copy a 125GB .mdf database file to a 250GB usb hard drive. Wh
en I drag and drop the file it tells me "insufficient amount of space" even
though the hard drive has plenty of storage. Please helpHi,
Can you please post your query to Windows 2000 public group.
Thanks
Hari
MCDBA
"Johnson" <anonymous@.discussions.microsoft.com> wrote in message
news:97CC8EA4-9B6E-422C-AB0A-A017FBE603BB@.microsoft.com...
> I am trying to copy a 125GB .mdf database file to a 250GB usb hard drive.
When I drag and drop the file it tells me "insufficient amount of space"
even though the hard drive has plenty of storage. Please help

Copy Database

I am trying to copy a 125GB .mdf database file to a 250GB usb hard drive. When I drag and drop the file it tells me "insufficient amount of space" even though the hard drive has plenty of storage. Please helpHi,
Can you please post your query to Windows 2000 public group.
Thanks
Hari
MCDBA
"Johnson" <anonymous@.discussions.microsoft.com> wrote in message
news:97CC8EA4-9B6E-422C-AB0A-A017FBE603BB@.microsoft.com...
> I am trying to copy a 125GB .mdf database file to a 250GB usb hard drive.
When I drag and drop the file it tells me "insufficient amount of space"
even though the hard drive has plenty of storage. Please help

Converting Text to number

Hello there
I have table with field which is a text field that provide numbers and text
I would like to drop all the records that on the current field has text and
leave only the records with the number on the field
For this i've tried to use the convertion process but it gave me an error
when the data is text
Is there a way to know if the data is text or number so i can deal with it?
any help would be useful
roy@.atidsm.co.il
' 050-7709399"Roy Goldhammer" <roygoldh@.hotmail.com> wrote in
news:#Ok5SqLIFHA.2564@.tk2msftngp13.phx.gbl:

> Hello there
> I have table with field which is a text field that provide numbers and
> text
> I would like to drop all the records that on the current field has text
> and leave only the records with the number on the field
> For this i've tried to use the convertion process but it gave me an
> error when the data is text
> Is there a way to know if the data is text or number so i can deal with
> it?
Try ISNUMERIC(expression)|||Although ISNUMERIC will provide the desired results in many cases, it will
also consider some obscure numeric values to be numeric. You can use LIKE
to test for integer digits. The example shows some differences between
ISNUMERIC and LIKE.
CREATE TABLE MyTable
(
MyNumber varchar(10)
)
GO
INSERT INTO MyTable VALUES('')
INSERT INTO MyTable VALUES(' ')
INSERT INTO MyTable VALUES('1')
INSERT INTO MyTable VALUES(' 2')
INSERT INTO MyTable VALUES('3 ')
INSERT INTO MyTable VALUES('1D')
INSERT INTO MyTable VALUES('0D1')
INSERT INTO MyTable VALUES('0E1')
SELECT *
FROM MyTable
WHERE ISNUMERIC(MyNumber) = 0
SELECT *
FROM MyTable
WHERE MyNumber LIKE '%[^0-9]%' OR
DATALENGTH(MyNumber) = 0
Hope this helps.
Dan Guzman
SQL Server MVP
"Roy Goldhammer" <roygoldh@.hotmail.com> wrote in message
news:%23Ok5SqLIFHA.2564@.tk2msftngp13.phx.gbl...
> Hello there
> I have table with field which is a text field that provide numbers and
> text
> I would like to drop all the records that on the current field has text
> and
> leave only the records with the number on the field
> For this i've tried to use the convertion process but it gave me an error
> when the data is text
> Is there a way to know if the data is text or number so i can deal with
> it?
> any help would be useful
> --
>
> roy@.atidsm.co.il
> ' 050-7709399
>|||ISNUMERIC also interprets '.', '-' and '+' as numeric.
Dan Guzman wrote:
> Although ISNUMERIC will provide the desired results in many cases, it
> will also consider some obscure numeric values to be numeric. You
> can use LIKE to test for integer digits. The example shows some
> differences between ISNUMERIC and LIKE.
> CREATE TABLE MyTable
> (
> MyNumber varchar(10)
> )
> GO
> INSERT INTO MyTable VALUES('')
> INSERT INTO MyTable VALUES(' ')
> INSERT INTO MyTable VALUES('1')
> INSERT INTO MyTable VALUES(' 2')
> INSERT INTO MyTable VALUES('3 ')
> INSERT INTO MyTable VALUES('1D')
> INSERT INTO MyTable VALUES('0D1')
> INSERT INTO MyTable VALUES('0E1')
> SELECT *
> FROM MyTable
> WHERE ISNUMERIC(MyNumber) = 0
> SELECT *
> FROM MyTable
> WHERE MyNumber LIKE '%[^0-9]%' OR
> DATALENGTH(MyNumber) = 0
>
> "Roy Goldhammer" <roygoldh@.hotmail.com> wrote in message
> news:%23Ok5SqLIFHA.2564@.tk2msftngp13.phx.gbl...