zlika's

Hola! Como estas?

zlika — Fri, 06 Apr 2012 03:09:33 +0000

\m/
//

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My bass

zlika — Thu, 01 Sep 2011 04:03:25 +0000

My bass is here… finally :-)

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How to store UTF-8 data in SQL Server

zlika — Sun, 06 Mar 2011 22:09:02 +0000

Very frequently we need to use the data type UTF-8 to store a data in different languages. As described in the MSDN page the UTF-8 data type is stored in the ‘Samples’ folder in SQL Server (Server\100\Samples\Engine\Programmability\CLR\UTF8String). You just need to activate it.

Create data type UTF-8

1. Generate a strong name key file
1.1. Open Command Prompt (Start –> Run –> ‘cmd’)
1.2. Change directory (C:\Program Files\Microsoft SDKs\Windows\v7.0A\bin)
1.3. Generate the key (C:\Program Files\Microsoft SDKs\Windows\v7.0A\bin>sn -k “C:\Program Files\Microsoft SQL Server\100\Samples\SampleKey.snk”)

2. Build the sample
2.1. Open Microsoft Visual Studio
2.2. Open ‘C:\Program Files\Microsoft SQL Server\100\Samples\Engine\Programmability\CLR\UTF8String\CS\UTF8String.sln’
2.3. Build –> Build UTF8String

3. Install UTF-8 data type
3.1. Open SQL Server Management Studio
3.2. Open ‘C:\Program Files\Microsoft SQL Server\100\Samples\Engine\Programmability\CLR\UTF8String\Scripts\InstallCS.sql’
3.3. Execute it
3.4. Test UTF-8 data type (C:\Program Files\Microsoft SQL Server\100\Samples\Engine\Programmability\CLR\UTF8String\Scripts\Test.sql)
3.4.1. Fix the error message ‘Msg 6263, Level 16, State 1, Line 2
Execution of user code in the .NET Framework is disabled. Enable “clr enabled” configuration option.‘

sp_configure 'clr enabled', 1;
RECONFIGURE;

3.4.2. Test UTF-8

DECLARE @u Utf8String;
SET @u = CONVERT(Utf8String, 'hello world');
SELECT
	@u.ToString()
	, CONVERT(varbinary(8000), @u)
	, SUBSTRING(@u.ToString(), 1, 5)
	, @u.Utf8Bytes;

The result

Create PHP form to insert a UTF-8 data

1. Create table

USE zlika;

CREATE TABLE CharsetTest
(
	[Language] VARCHAR(50)
	, [Phrase] UTF8String
);

2. Create PHP form (insert.php)



	
	Charset Test






	Language: 

	Phrase:

3. Insert test data

Bulgarian –> Честита Нова Година!
Arabic –> سنة جديدة سعيدة!
Armenian — > Շնորհավոր Նոր Տարի
Azarbaijani –> Yeni iliniz mübarək
Catalan –> Feliç Any Nou!
Chinese (Traditional) –> 新年快樂
Polish –> Szczęśliwego Nowego Roku!
Thai –> สวัสดีปีใหม่
hindi –> नया साल मुबारक हो

4. Check the content of the table (check.php)



	
	Charset Test



';

$i = 0;
while ($i < mssql_num_fields($result))
{
	echo ''. mssql_field_name($result, $i) . '';
	$i++;
}
echo '';

//Retrieving rows
while ($row = mssql_fetch_array($result, MSSQL_ASSOC))
{
	echo '';
	foreach ($row as $data)
	{
		echo '' . $data . '';
	}
	echo'';
}

echo '';

// Close database connection
mssql_close($connect);

?>

The result:

The result

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MaraK

zlika — Thu, 17 Feb 2011 16:41:01 +0000

I’m starting a project for management of a small store, using C# and SQL Server Express.

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Boka!

zlika — Wed, 02 Feb 2011 05:48:12 +0000

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Fender Bass and Amplifier

zlika — Mon, 22 Nov 2010 00:17:53 +0000

Last Friday I drank two beers with a bunch of smiled people and one of them asked me if I have bought my bass. I answered no. He said that live is so simple and if I die tomorrow, I’ll regret for every day I have not played. He’s right. Yesterday and today I visited two music stored to find my bass. Now I have to wait for the price and order my Fender Precision American Deluxe bass and the amplifier (Fender Rumble 350 Combo). What else? A cable, a strap and a bag.

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Equal Action to Identical Databases

zlika — Mon, 15 Nov 2010 05:42:58 +0000

If I administer 345 identical databases I can do equal action to all of them (or some of them) easy by selecting the names of the databases, generate dynamic code, execute it and select the result and the errors (is any).

In this example I will select the names of the databases, create dynamic code and execute it. Next, in case of result or errors – create temporary ‘Result’ or/and ‘Errors’ table/s. The database zlika1 differs (column name ‘FirstName1′ on line 16) from the others to generate an error.

-- Create databases
CREATE DATABASE zlika1
CREATE DATABASE zlika2
CREATE DATABASE zlika3
GO

-- Create Tables
CREATE TABLE zlika1.dbo.Names
(
	FirstName NVARCHAR(50)
	, LastName NVARCHAR(50)
)

CREATE TABLE zlika2.dbo.Names
(
	FirstName1 NVARCHAR(50)
	, LastName NVARCHAR(50)
)

CREATE TABLE zlika3.dbo.Names
(
	FirstName NVARCHAR(50)
	, LastName NVARCHAR(50)
)

-- Populate Tables
INSERT INTO zlika1.dbo.Names VALUES ('z_FirstName', 'z_Lastname')
INSERT INTO zlika2.dbo.Names VALUES ('z1_FirstName', 'z1_Lastname')
INSERT INTO zlika3.dbo.Names VALUES ('z2_FirstName', 'z2_Lastname')
GO

And the script… The code that will be executes to all databases is on line 42. in this example I select the first and last names of the ‘Names’ table from all databases which name starts with ‘zlika’.

USE master
GO

-- Declare variables
DECLARE @DBName NVARCHAR(100), @Rows INT, @SQL VARCHAR(max)

-- Delete Temp Table
IF EXISTS (SELECT * FROM tempdb..sysobjects WHERE [name] LIKE '#TempTable%')
	DROP TABLE #TempTable

IF EXISTS (SELECT * FROM tempdb..sysobjects WHERE [name] LIKE '#Result%')
	DROP TABLE #Result

IF EXISTS (SELECT * FROM tempdb..sysobjects WHERE [name] LIKE '#Errors%')
	DROP TABLE #Errors

-- Populate Temp Table
SELECT [name]
INTO #TempTable
FROM sys.databases
WHERE [name] LIKE 'zlika%'

-- Count rows in Temp Table
SELECT @Rows = COUNT([name])
FROM #TempTable

-- Cycle
WHILE (@Rows) > 0
BEGIN
	SELECT TOP 1 @DBName = [name] FROM #TempTable
	---------- Do Something Start ----------
	BEGIN TRY
		IF NOT EXISTS (SELECT * FROM tempdb..sysobjects WHERE [name] LIKE '#Result%')
			BEGIN
				CREATE TABLE #Result
				(
					DatabaseName NVARCHAR(50)
					, FirstName NVARCHAR(50)
					, LastName NVARCHAR(50)
				)
			END
		SELECT @SQL = 'INSERT INTO #Result SELECT ''' + @DBName + ''', FirstName, LastName FROM ' + @DBName + '.dbo.Names'
		EXEC (@SQL)
	END TRY

	BEGIN CATCH
		IF NOT EXISTS (SELECT * FROM tempdb..sysobjects WHERE [name] LIKE '#Errors%')
			BEGIN
				CREATE TABLE #Errors
				(
					DatabaseName NVARCHAR(100)
					, ErrorNumber INT
					, ErrorMessage NVARCHAR(250)
				)
			END
		INSERT INTO #Errors VALUES (@DBName, ERROR_NUMBER(), ERROR_MESSAGE())
	END CATCH
	---------- Do Something End ----------
	DELETE FROM #TempTable WHERE [name] = @DBName
	SET @Rows = @Rows - 1
END

IF EXISTS (SELECT * FROM tempdb..sysobjects WHERE [name] LIKE '#Result%')
	SELECT *
	FROM #Result

IF EXISTS (SELECT * FROM tempdb..sysobjects WHERE [name] LIKE '#Errors%')
	SELECT *
	FROM #Errors

-- Clean up
DROP TABLE #TempTable

IF EXISTS (SELECT * FROM tempdb..sysobjects WHERE [name] LIKE '#Result%')
	DROP TABLE #Result

IF EXISTS (SELECT * FROM tempdb..sysobjects WHERE [name] LIKE '#Errors%')
	DROP TABLE #Errors
GO

The result – two rows, corresponding to ‘zlika1′ and ‘zlika3′ databases and one error, corresponding to ‘zlika2′ database.

Result - two selected rows and one error

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‘My favorite drummers’ list

zlika — Sun, 07 Nov 2010 20:34:39 +0000

To play drums (or whatever else) is not only to hit the sticks, pull the strings or push the buttons fast and technically. A joke says that a father took his son to an old piano teacher to have his opinion. The kid played very fast and technically well. He even used his nose to push a button in an “impossible to play situation”. The final words of the teacher were:

Boy, you play very well. Soon you’ll start to create a real music!

In this line of thought, I present you a short list (will be updated) of my favorite drummers. Drummers, who are not only drummers, but also magicians.

1. Tim Alexander (Primus, Attention Deficit)

Tim Alexander (Wiki)

2. Dave Lombardo (Slayer, Fantomas)

Dave Lombardo (Wiki)

3. Mike Portnoy (Dream Theater, Licuid Tension Experiment)

Mike Portnoy (Wiki)

4. Ringo Star (Beatles)

Ringo Star (Wiki)

5. Lars Ulrich (Metallica)

Lars Ulrich (Wiki)

6. Stephen Perkins (Jane’s Addiction, Porno For Pyros)

Stephen Perkins (Wiki)

7. Chad Smith (Red Hot Chili Peppers)

Chad Smith (Wiki)

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SELECT * or SELECT [Column Name] in IF statement in MS SQL Server

zlika — Sun, 31 Oct 2010 19:02:32 +0000

When we decide how to manipulate the data, we use IF statement verification. For example if we export information about merchant sales, we have two common groups of merchants – these we scan (with serial numbers) and these we don’t scan. For both of them we use two BEGIN… END blocks. To verify the type we use IF statement which searches for a row in ‘RegisteredScans’ table.

We can write the IF statement like:

...
IF EXISTS
(
	SELECT *
	FROM RegisteredScans
	WHERE...
)
BEGIN
	...
END
...

or:

...
IF EXISTS
(
	SELECT [Column Name]
	FROM RegisteredScans
	WHERE [Column Name]...
)
BEGIN
	...
END
...

The difference is that we select ALL or only the column that we use to verify the truth of the IF statement.

I created an example to demonstrate the difference between SELECT * and SELECT [Column Name]. First I need to know which table has most rows in AdventureWorks2008 database. On this address I found the following script:

USE AdventureWorks2008
GO

ALTER PROCEDURE dbo.listTableRowCounts
AS
BEGIN
	SET NOCOUNT ON

	DECLARE @SQL VARCHAR(255)
	SET @SQL = 'DBCC UPDATEUSAGE (' + DB_NAME() + ')'
	EXEC(@SQL)

	CREATE TABLE #foo
	(
		tablename VARCHAR(255)
        , rc INT
	)

	INSERT #foo
	EXEC sp_msForEachTable
		'SELECT PARSENAME(''?'', 1),
		COUNT(*) FROM ?'
END

	SELECT tablename, rc
	FROM #foo
	ORDER BY rc DESC

	DROP TABLE #foo
GO

Then I executed the stored procedure

USE AdventureWorks2008
GO

EXEC dbo.listTableRowCounts
GO

And I found that the table ‘SalesOrderDetail’ contains 121317 rows (most in the database). Next I wrote a script which uses Start time and End time to calculate the duration of execution of a code. In our example the code is:

SELECT *
FROM SalesOrderDetail
GO

and

SELECT SalesOrderID
FROM SalesOrderDetail
GO

When I select all the columns, the time for the operation is 6.594 seconds

USE AdventureWorks2008
GO

-- Declare variables
DECLARE @Start TIME
DECLARE @End TIME

-- Set start time
SET @Start = GETDATE()

-- Operation
SELECT *
FROM Sales.SalesOrderDetail

-- Set end time
SET @End = GETDATE()

-- Calculate the difference in times
SELECT DATEDIFF(MS, @Start, @End) AS Milliseconds
GO

SELECT * FROM...

When I select the ‘SalesOrderID’ column, the time for the operation is 2.470 seconds

SELECT SalesOrderID FROM...

When I select ‘rowguid’ column, the time for the operation is 3.234 seconds

SELECT rowguid FROM...

The difference between ‘SalesOrderID’ and ‘rowguid’ columns is that ‘SalesOrderID’ is Primary Key, i.e. it’s indexed.

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Select server logins and their roles in SQL Server

zlika — Sun, 24 Oct 2010 21:25:37 +0000

To view all the server logins and their roles I use the system view sys.syslogins and CASE to convert 1 to “Yes” and 0 to “No”.

-- Select all database logins and their server roles
USE master
GO

SELECT
	[name] AS [Login]
	, CASE sysadmin WHEN 0 THEN 'No' WHEN 1 THEN 'Yes' ELSE 'N/A' END AS [sysadmin]
	, CASE securityadmin WHEN 0 THEN 'No' WHEN 1 THEN 'Yes' ELSE 'N/A' END AS [securityadmin]
	, CASE serveradmin WHEN 0 THEN 'No' WHEN 1 THEN 'Yes' ELSE 'N/A' END AS [serveradmin]
	, CASE setupadmin WHEN 0 THEN 'No' WHEN 1 THEN 'Yes' ELSE 'N/A' END AS [setupadmin]
	, CASE processadmin WHEN 0 THEN 'No' WHEN 1 THEN 'Yes' ELSE 'N/A' END AS [processadmin]
	, CASE diskadmin WHEN 0 THEN 'No' WHEN 1 THEN 'Yes' ELSE 'N/A' END AS [diskadmin]
	, CASE dbcreator WHEN 0 THEN 'No' WHEN 1 THEN 'Yes' ELSE 'N/A' END AS [dbcreator]

FROM sys.syslogins
GO

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