Knowledge is Power

Here is The Combined answer that i have collected from various articles and experience. Here is the Difference. 1. SET is the ANSI standard for variable assignment, SELECT is not.   2. You can use SELECT to assign values to more than one variable at a time. SET allows you to assign data to only one variable at a time. Here's how: /* Declaring variables */ DECLARE @Variable1 AS int, @Variable2 AS int /* Initializing two variables at once */ SELECT @Variable1 = 1, @Variable2 = 2 /* The same can be done using SET, but two SET statements are needed */ SET @Variable1 = 1 SET @Variable2 = 2       3. When assigning from a query if there is no value returned then SET will assign NULL, where SELECT will not make the assignment at all (so the variable will not be changed from it's previous value) .   4. When using a query to populate a variable, SET will fail with an error, if the query returns more than one value. But SELECT will assign one of ...

Yesterday, I was to Upload very large data. So I opened my Sql Server management studio & tried Import/Export wizard. & Surprise !!, I was not able to start Import/Export wizard. The SSIS Data Flow Task could not be created. Verify that DTSPipeline.dll is available and registered. The wizard cannot continue and it will terminate. ADDITIONAL INFORMATION: Cannot create a task with the name "STOCK:PipelineTask". Verify that the name is correct. ({1A768FBA-F8F7-4147-B1CD-2953FAC6781E}). I searched the  DTSPipeline.dll  in GAC (Shared Assembly folder). But there are both MSIL & x86 version. After that I searched Program Files SQL Server folder & found the above dll. I just registered this dll & my problem has been resolved. Regsvr32.exe "C:\Program Files\Microsoft SQL Server\90\DTS\Binn\dtspipeline.dll" Above command will register the required dll. Thanks, Anuj Rathi

.NET 4 adds new method called string.IsNullOrWhiteSpace() which checks for spaces, empty or null. This is a nice time-saver for developers.. This static method returns true if a string is full of whitespace characters. Let us consider the below example . static void Main() { string strTest = "Simple Talk"; string strNull = null; string strEmpty = string.Empty; string strWhiteSpace = "\t\r\n\n "; Console.WriteLine("Is null or whitespace Exmaple!!"); Console.WriteLine("TestSting: " + string.IsNullOrWhiteSpace(strTest));//false Console.WriteLine("NullString: " + string.IsNullOrWhiteSpace(strNull)); //true Console.WriteLine("EmptyString: " + string.IsNullOrWhiteSpace(strEmpty)); //true Console.WriteLine("WhiteSpaceString: " + string.IsNullOrWhiteSpace(strWhiteSpace)); //true Console.ReadLine(); }

                 SQL Server user-defined functions and stored procedures offer similar functionality. Both allow you to create bundles of SQL statements that are stored on the server for future use. This offers you a tremendous efficiency benefit, as you can save programming time by: Reusing code from one program to another, cutting down on program development time. Hiding the SQL details, allowing database developers to worry about SQL and application developers to deal only in higher-level languages Centralize maintenance, allowing you to make business logic changes in a single place that automatically affect all dependent applications           At first glance, functions and stored procedures seem identical. However, there are several subtle, yet important differences between the two: Stored procedures are called independently, using the EXEC command, while functions are called from within another SQL sta...

Microsoft SQL Server provides the stored procedure mechanism to simplify the database development process by grouping Transact-SQL statements into manageable blocks. Benefits of Stored Procedures Why should we use stored procedures? Let's take a look at the key benefits of this technology: Precompiled execution . SQL Server compiles each stored procedure once and then reutilizes the execution plan. This results in tremendous performance boosts when stored procedures are called repeatedly. Reduced client/server traffic . If network bandwidth is a concern in your environment, you'll be happy to learn that stored procedures can reduce long SQL queries to a single line that is transmitted over the wire. Efficient reuse of code and programming abstraction . Stored procedures can be used by multiple users and client programs. If you utilize them in a planned manner, you'll find the development cycle takes less time. Enhanced security controls . You can grant users permissi...

Hi All,           Yesterday, I was facing a problem. Actually I was to rename all the constraints as our Standards. When I create tables in query analyzer, Sql Server create Constraints name itself. Now, I have to change all constraints according to naming conventions. This is the below script by which I get all the constraints in my database. SELECT OBJECT_NAME(OBJECT_ID) AS ConstraintName, SCHEMA_NAME(schema_id) AS SchemaName,  OBJECT_NAME(parent_object_id) AS TableName, type_desc AS ConstraintType FROM sys.objects WHERE type_desc LIKE '%CONSTRAINT' Above script list all constraints. But If I want to see only Primary keys or Foreign Keys or default constraints the I will use the where clause like this: SELECT OBJECT_NAME(OBJECT_ID) AS ConstraintName, SCHEMA_NAME(schema_id) AS SchemaName, OBJECT_NAME(parent_object_id) AS TableName, type_desc AS ConstraintType FROM sys.objects WHERE type_desc = 'PRIMARY_KEY_CONSTRAINT'; SELECT OBJECT...

You can use this system Stored Procedure to find the all dependencies of an Object. EXEC sp_depends @objname = N'StoredProcedureName' ;

WE can see the Sql Server Name, version, edition etc using below query: SELECT @@SERVERNAME ,  SERVERPROPERTY('productversion'),  SERVERPROPERTY ('productlevel'),  SERVERPROPERTY ('edition')

SELECT s_mf.[name], s_mf.physical_name, s_mf.[size]/128 AS SizeInMB, s_mf.max_size/128 AS MaxSizeInMB, s_mf.growth FROM sys.master_files s_mf ORDER BY s_mf.[size] DESC Above query will return Database Name, its physical path & database files size in MB. Happy Coding !!

At times, it is needed that you encrypt the text of stored procedures containing sensitive information. SQL Server provides the WITH ENCRYPTION to encrypt the text of the stored procedure. CREATE procedure [dbo].[TestProc] WITH ENCRYPTION AS BEGIN SELECT 'TEST' as TestColumn END Once the stored procedure has been created WITH ENCRYPTION, attempts to view the stored procedure returns a message specifying that the text is encrypted: EXEC sp_helptext TestProc 'The text for object 'Ten Most Expensive Products Encyrpt' is encrypted.' One note of caution. Save the original text of the stored procedure before encrypting it, as there is no straightforward way to decode the encrypted text. One hack is to attach a debugger to the server process and retrieve the decrypted procedure from memory at runtime.