If exists (select record)
begin
sql statement 1
sql statement 2
end
else
begin
sql statement 3
sql statement 4
end

Example

Scripts that include constructs like the following may produce errors if the table described in the script does not include the specified column:

if exists (select 1 from syscolumns
where id = object_id("some_table")
and name = "some_column")
begin
alter table some_table drop some_column
end

In this example, some_column must exist in some_table for the batch to succeed.

If some_column exists in some_table, the first time you run the batch, alter table drops the column. On subsequent executions, the batch does not compile.

Adaptive Server raises these errors while preprocessing this batch, which are similar to those that are raised when a normal select tries to access a nonexistent column. These errors are raised when you modify a table’s schema using clauses that require a data copy. If you add a null column, and use the above construct, Adaptive Server does not raise these errors.

To avoid such errors when you modify a table’s schema, include alter table in an execute immediate command:

if exists (select 1 from syscolumns
where id = object_id("some_table")
and name = "some_column")
begin
exec ("alter table some_table drop
some_column")
end

Because the execute immediate statement is run only if the if exists() function succeeds, Adaptive Server does not raise any errors when it compiles this script.

You must also use the execute immediate construct for other uses of alter table, for example, to change the locking scheme, and for any other cases when the command does not require data copy.

SELECT sales_rep, emp_lname, count( * )
FROM sales_order
KEY JOIN employee
GROUP BY sales_rep

gives the error

column ‘emp_lname’ cannot be used unless it is in a GROUP BY.

SQL does not realize that each of the rows for an employee with a given ID have the same value of emp_lname. An error is reported since SQL does not know which of the names to display.

However, the following is valid:

SELECT sales_rep, max( emp_lname ), count( * )
FROM sales_order
KEY JOIN employee
GROUP BY sales_rep

The max function chooses the maximum (last alphabetically) surname from the detail rows for each group. The surname is the same on every detail row within a group so the max is just a trick to bypass a limitation of SQL.

http://chart.apis.google.com/chart?cht=tx&chf=bg,s,FFFFFF00&chco=AACCFF&chl=i\hbar\frac{\partial}{\partial t} \Psi(\mathbf{r},\,t) = \hat H \Psi(\mathbf{r},t)

Put your code in the chl parameter. The chf parameter lets you specify a background color in RGBA, chco lets you set the foreground color in RGB. When you drop it in inside of an image tag you get this:

Put your code in the chl parameter. The chf parameter lets you specify a background color in RGBA, chco lets you set the foreground color in RGB. When you drop it in inside of an image tag you get this:

If you anticipate making 250,000 calls to the chart server a day, contact Google first at chart-api-notifications@google.com. There’s no limit to how much you can use it, but they reserve the right to turn you off.

That is it.

Firstly, go on ( System->Administration->Software Sources ) then click on “Third-Party software” tab. Now you should see a button “+Add” shows on it.

deb http://ppa.launchpad.net/anders-kaseorg/ppa/ubuntu intrepid main
deb-src http://ppa.launchpad.net/anders-kaseorg/ppa/ubuntu intrepid main

As you see above there is two lines of address. You should add them one-by-one by clicking this “+Add” button. when you are done with that it is time to get PPA keys for this repository.

Now use there commands

cd ~/Desktop
gedit temp.key

A Gedit window should be appear now. Then paste this key code inside of that window.

-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: SKS 1.0.10
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=ZaVk
-----END PGP PUBLIC KEY BLOCK-----

Then just save it. If this key above doesn’t works then try http://keyserver.ubuntu.com:11371/pks/lookup?search=0x026491A5DD081BDC6CDFC0DE6298AD34413576CB&op=index this link so you can find current key there. Now we are really close to make nvidia 180.29 working on our ubuntu. Now go on ( System->Administration->Software Sources ) then click on Authentication tab then you will see “+ Import Key File” button there. Click on it and find your “temp.key” file on your Desktop. Then click ok there you go now you are ready to make it work.

By the way you must be sure your old driver is working on 3D mode. Now open terminal again and write this commands

sudo apt-get update
sudo apt-get install nvidia-glx-180

When it prompts on screen press “Y” button on your keyboard then Enter button. Now all you have to do it give it some time. After a quick restart you will have your drivers running you computer

CodeIgniter’s Pagination class is very easy to use, and it is 100% customizable, either dynamically or via stored preferences.

If you are not familiar with the term “pagination”, it refers to links that allows you to navigate from page to page, like this:

« First < 1 2 3 4 5 > Last »

function shownews()
{
if($this->userlib->logged_in())
//checking for security purposes
{
$this->load->library('pagination');
$per_page = 10;
// How many pages you want to show in each page
$total = $this->db->get('posts', $per_page, $this->uri->segment(3)); 

//Here is the most important part actually.
Basically $total variable determined which
rows you are going to show in the page

$config['base_url'] = base_url().'/index.php/admin/shownews';
$config['total_rows'] = $this->db->count_all('posts'); // Count total rows in the query
$config['per_page'] = $per_page;
$config['num_links'] = 6;
$this->pagination->initialize($config);
$data['posts'] = $total;
$this->load->view('admin_shownews', $data);
} else {
$this->load->view('admin_logineed');
}
}

After getting done with this configuration part of pagination class all you have to do is just initialize it like you are doing it in most of programming languages.

Then by using $this->load->view()  parse your data array to your view which is going to be used for showing paginated items. In that view page you should use this;

<?php echo $this->pagination->create_links(); ?>

to auto create your pagination links. You can put this anwhere in your page you want.

You need to install a little application.

sudo apt-get install nrg2iso

then to convert files

cin@nexus:~$ nrg2iso here_nrg_name.nrg here_new_iso_name.iso

that’s all you need to do..

now you can burn iso file with any CD/DVD/Blu-RAy Writer..

How a good one..

lspci -v

komutu ile listelediğimde ses kartımın özellikleri şu şekilde

02:09.0 Multimedia audio controller: Creative Labs SB Audigy LS
Subsystem: Creative Labs SB0410 SBLive! 24-bit
Flags: bus master, medium devsel, latency 64, IRQ 21
I/O ports at df80 [size=32]
Capabilities: <access denied>

elimde 5+1 destekleyen bir ses kartı ve ses sistemi olmasına rağmen tüm kanallardan ses alamıyorum.??

Yapmam gereken şu;

sudo cp .asoundrc .asoundrc.backup

sudo gedit .asoundrc

Komutlarını girerek sistemimdeki .asoundrc dosyasını gedit uygulamasıyla açıyorum. Ses kartım ile ilgili ayarlar bu dosyada tutuluyor. Yeni kurulan sistemlerde bu dosya olmayabilir çünkü sistem dosyaya ihtiyaç duymadan öntanımlı olarak çalışıyor. Biz şimdi bu dosyaya gerekli ayarları gireceğiz ve sistemden tam performans (ses tarafında) almaya çalışıcağız.

Bu arada .asoundrc dosyası /home/kullanıcıadı/.asoundrc konumunda bulunmalıdır. Zaten yukarıda verdiğim komut işlem yaptığınızda dosya otomatik olarak bu konuma kaydedilecektir.

Evet, gedit ile boş bir metin belgesi açtık ve bu belgenin içine gerekli değerleri şu şekilde tanımlıyoruz.

################################################## #######
#This is the standard setting (see: “!default”)
#This profile, the default loaded, upmixes stereo sound to 5.1.

pcm.!default {
type plug
slave.pcm “surround51″
slave.channels 6
route_policy duplicate
}

Dikkat etmeniz gereken nokta, eğer sisteminizde bu dosya ile daha önceden uğraşmışsanız (ki ses olayını ararken illaki kurcalamışsınızdır.) bu değerleri girerken içerisindeki diğer tüm değerleri silin daha sonra benim verdiğim değerleri girin.

Burada yaptığımız işlem aslında tam bir surround performansı degil yanlızca tüm kanallerın upmix yöntemiyle mixlenip kullanılabilmesi ve daha iyi ses alınabilmesidir.

Ses sisteminizi test etmek için;

speaker-test -Dplug:surround51 -c6 -twav

Komutunu kullanabilirsiniz. Keyifli Müzikler!!

Asıl paketimiz olan “ntfs-config” paketini yükleyelim.

sudo aptitude install ntfs-config

Bu arada bu işleme başlamadan önce harddisklerinizin mount edilmemiş olmasına dikkat edin.

Yükleme işlemi tamamlandıktan sonra  Applications->System Tools->NTFS Configuration Tool  Yolunu izleyerek uygulamayı çalıştırın ve gerekli hdd leri belirtin hepsi bu.

kolay gelsin