WHILE in Sqlserver

WHILE in Sqlserver


Sets a condition for the repeated execution of an SQL statement or statement block. The statements are executed repeatedly as long as the specified condition is true. The execution of statements in the WHILE loop can be controlled from inside the loop with the BREAK and CONTINUE keywords.

Example:

WHILE (SELECT AVG(ListPrice) FROM Production.Product) < $300
BEGIN
   UPDATE Production.Product
      SET ListPrice = ListPrice * 2
   SELECT MAX(ListPrice) FROM Production.Product
   IF (SELECT MAX(ListPrice) FROM Production.Product) > $500
      BREAK
   ELSE
      CONTINUE
END

PIVOT and UNPIVOT Query in Sql Server

PIVOT and UNPIVOT Query in Sql Server

PIVOT rotates a table-valued expression by turning the unique values from one column in the expression into multiple columns in the output, and performs aggregations where they are required on any remaining column values that are wanted in the final output.


UNPIVOT performs the opposite operation to PIVOT by rotating columns of a table-valued expression into column values.

Basic PIVOT Example

The following code example produces a two-column table that has four rows.

USE AdventureWorks2008R2 ;
GO
SELECT DaysToManufacture, AVG(StandardCost) AS AverageCost 
FROM Production.Product
GROUP BY DaysToManufacture;

Here is the result set.



DaysToManufacture          AverageCost

0                          5.0885

1                          223.88

2                          359.10

The following code displays the same result, pivoted so that the DaysToManufacture values become the column headings. A column is provided for three [3] days, even though the results are NULL.










-- Pivot table with one row and five columns
SELECT 'AverageCost' AS Cost_Sorted_By_Production_Days, 
[0], [1], [2], [3], [4]
FROM
(SELECT DaysToManufacture, StandardCost 
    FROM Production.Product) AS SourceTable
PIVOT
(
AVG(StandardCost)
FOR DaysToManufacture IN ([0], [1], [2], [3], [4])
) AS PivotTable;







Here is the result set.

Cost_Sorted_By_Production_Days    0         1         2           3       4       

AverageCost                       5.0885    223.88    359.1082    NULL    949.4105

http://msdn.microsoft.com/en-us/library/ms177410(v=sql.105).aspx

Endpoints: Addresses, Bindings, and Contracts in WCF

Endpoints: Addresses, Bindings, and Contracts in WCF

All communication with a Windows Communication Foundation (WCF) service occurs through the endpoints of the service. Endpoints provide clients access to the functionality offered by a WCF service.

Each endpoint consists of four properties:

• An address that indicates where the endpoint can be found.
• A binding that specifies how a client can communicate with the endpoint.
• A contract that identifies the operations available.
• A set of behaviors that specify local implementation details of the endpoint. 

The Structure of an Endpoint

Each endpoint consists of the following:

• Address: The address uniquely identifies the endpoint and tells potential consumers of the service where it is located. It is represented in the WCF object model by theEndpointAddress class. An EndpointAddress class contains:
  
  
  • A Uri property, which represents the address of the service.
    
  • An Identity property, which represents the security identity of the service and a collection of optional message headers. The optional message headers are used to provide additional and more detailed addressing information to identify or interact with the endpoint.
    
  For more information, see Specifying an Endpoint Address.
  
• Binding: The binding specifies how to communicate with the endpoint. This includes:
  
  
  • The transport protocol to use (for example, TCP or HTTP).
    
  • The encoding to use for the messages (for example, text or binary).
    
  • The necessary security requirements (for example, SSL or SOAP message security).
    
  For more information, see Windows Communication Foundation Bindings Overview. A binding is represented in the WCF object model by the abstract base class Binding. For most scenarios, users can use one of the system-provided bindings. For more information, see System-Provided Bindings.
  
• Contracts: The contract outlines what functionality the endpoint exposes to the client. A contract specifies:
  
  
  • What operations can be called by a client.
    
  • The form of the message.
    
  • The type of input parameters or data required to call the operation.
    
  • What type of processing or response message the client can expect.
    
  For more information about defining a contract, see Designing Service Contracts.
  
• Behaviors: You can use endpoint behaviors to customize the local behavior of the service endpoint. Endpoint behaviors achieve this by participating in the process of building a WCF runtime. An example of an endpoint behavior is the ListenUri property, which allows you to specify a different listening address than the SOAP or Web Services Description Language (WSDL) address. For more information, see ClientViaBehavior.

Calling Javascript from Server side of the code in Asp.net

Calling Javascript from Server side of the code in Asp.net

Methods:

1. Page.ClientScript.RegisterStartupScript( me.gettype(), "PopupScript", alertScript );

Asynchronous Postback:[If Ajax used in the page]

2. ScriptManager.RegisterStartupScript(this, GetType(), "YourUniqueScriptKey",
        "alert('This pops up');", true);

Parameters
page
Type: System.Web.UI.Page
The page object that is registering the client script block.

type
Type: System.Type
The type of the client script block. This parameter is usually specified by using the typeof operator (C#) or the GetType operator (Visual Basic) to retrieve the type of the control that is registering the script.

key
Type: System.String
A unique identifier for the script block.

script
Type: System.String

The script.
addScriptTags


Type: System.Boolean
true to enclose the script block with < scrip t> and < / script > tags; otherwise, false.

C# and VB.net Connectivity with Query String

C# and VB.net Connectivity with Query String


C# Example

//Execute Non Query for query string

private static void CreateCommand(string queryString,
    string connectionString)
{
    using (SqlConnection connection = new SqlConnection(
               connectionString))
    {
        SqlCommand command = new SqlCommand(queryString, connection);
        command.Connection.Open();
        command.ExecuteNonQuery();
    }
}


VB.NET Example

Public Sub CreateCommand(ByVal queryString As String, _
  ByVal connectionString As String)
    Using connection As New SqlConnection(connectionString)
        Dim command As New SqlCommand(queryString, connection)
        command.Connection.Open()
        command.ExecuteNonQuery()
    End Using
End Sub


//
C# Example SQLReader Example

private static void ReadOrderData(string connectionString)
{
    string queryString =
        "SELECT OrderID, CustomerID FROM dbo.Orders;";

    using (SqlConnection connection =
               new SqlConnection(connectionString))
    {
        SqlCommand command =
            new SqlCommand(queryString, connection);
        connection.Open();

        SqlDataReader reader = command.ExecuteReader();

        // Call Read before accessing data.
        while (reader.Read())
        {
            Console.WriteLine(String.Format("{0}, {1}",
                reader[0], reader[1]));
        }

        // Call Close when done reading.
        reader.Close();
    }
}


VB.NET SQLReader Example


Private Sub ReadOrderData(ByVal connectionString As String)
    Dim queryString As String = _
        "SELECT OrderID, CustomerID FROM dbo.Orders;"

    Using connection As New SqlConnection(connectionString)
        Dim command As New SqlCommand(queryString, connection)
        connection.Open()

        Dim reader As SqlDataReader = command.ExecuteReader()

        ' Call Read before accessing data.
        While reader.Read()
            Console.WriteLine(String.Format("{0}, {1}", _
                reader(0), reader(1)))
        End While

        ' Call Close when done reading.
        reader.Close()
    End Using
End Sub



C# Connectivity for  ExecuteSchalar

static public int AddProductCategory(string newName, string connString)
{
    Int32 newProdID = 0;
    string sql =
        "INSERT INTO Production.ProductCategory (Name) VALUES (@Name); "
        + "SELECT CAST(scope_identity() AS int)";
    using (SqlConnection conn = new SqlConnection(connString))
    {
        SqlCommand cmd = new SqlCommand(sql, conn);
        cmd.Parameters.Add("@Name", SqlDbType.VarChar);
        cmd.Parameters["@name"].Value = newName;
        try
        {
            conn.Open();
            newProdID = (Int32)cmd.ExecuteScalar();
        }
        catch (Exception ex)
        {
            Console.WriteLine(ex.Message);
        }
    }
    return (int)newProdID;
}

VB.NET Connectivity for  ExecuteSchalar

Public Function AddProductCategory( _
  ByVal newName As String, ByVal connString As String) As Integer
    Dim newProdID As Int32 = 0
    Dim sql As String = _
     "INSERT INTO Production.ProductCategory (Name) VALUES (@Name); " _
       & "SELECT CAST(scope_identity() AS int);"

    Using conn As New SqlConnection(connString)
        Dim cmd As New SqlCommand(sql, conn)
        cmd.Parameters.Add("@Name", SqlDbType.VarChar)
        cmd.Parameters("@Name").Value = newName
        Try
            conn.Open()
            newProdID = Convert.ToInt32(cmd.ExecuteScalar())
        Catch ex As Exception
            Console.WriteLine(ex.Message)
        End Try
    End Using

    Return newProdID
End Function

C# Example


//Execute Non Query for query string

private static void CreateCommand(string queryString,
    string connectionString)
{
    using (SqlConnection connection = new SqlConnection(
               connectionString))
    {
        SqlCommand command = new SqlCommand(queryString, connection);
        command.Connection.Open();
        command.ExecuteNonQuery();
    }
}


VB.NET Example

Public Sub CreateCommand(ByVal queryString As String, _
  ByVal connectionString As String)
    Using connection As New SqlConnection(connectionString)
        Dim command As New SqlCommand(queryString, connection)
        command.Connection.Open()
        command.ExecuteNonQuery()
    End Using
End Sub


//C# Example SQLReader Example

private static void ReadOrderData(string connectionString)
{
    string queryString =
        "SELECT OrderID, CustomerID FROM dbo.Orders;";

    using (SqlConnection connection =
               new SqlConnection(connectionString))
    {
        SqlCommand command =
            new SqlCommand(queryString, connection);
        connection.Open();

        SqlDataReader reader = command.ExecuteReader();

        // Call Read before accessing data.
        while (reader.Read())
        {
            Console.WriteLine(String.Format("{0}, {1}",
                reader[0], reader[1]));
        }

        // Call Close when done reading.
        reader.Close();
    }
}


VB.NET SQLReader Example


Private Sub ReadOrderData(ByVal connectionString As String)
    Dim queryString As String = _
        "SELECT OrderID, CustomerID FROM dbo.Orders;"

    Using connection As New SqlConnection(connectionString)
        Dim command As New SqlCommand(queryString, connection)
        connection.Open()

        Dim reader As SqlDataReader = command.ExecuteReader()

        ' Call Read before accessing data.
        While reader.Read()
            Console.WriteLine(String.Format("{0}, {1}", _
                reader(0), reader(1)))
        End While

        ' Call Close when done reading.
        reader.Close()
    End Using
End Sub



C# Connectivity for  ExecuteSchalar

static public int AddProductCategory(string newName, string connString)
{
    Int32 newProdID = 0;
    string sql =
        "INSERT INTO Production.ProductCategory (Name) VALUES (@Name); "
        + "SELECT CAST(scope_identity() AS int)";
    using (SqlConnection conn = new SqlConnection(connString))
    {
        SqlCommand cmd = new SqlCommand(sql, conn);
        cmd.Parameters.Add("@Name", SqlDbType.VarChar);
        cmd.Parameters["@name"].Value = newName;
        try
        {
            conn.Open();
            newProdID = (Int32)cmd.ExecuteScalar();
        }
        catch (Exception ex)
        {
            Console.WriteLine(ex.Message);
        }
    }
    return (int)newProdID;
}

VB.NET Connectivity for  ExecuteSchalar

Public Function AddProductCategory( _
  ByVal newName As String, ByVal connString As String) As Integer
    Dim newProdID As Int32 = 0
    Dim sql As String = _
     "INSERT INTO Production.ProductCategory (Name) VALUES (@Name); " _
       & "SELECT CAST(scope_identity() AS int);"

    Using conn As New SqlConnection(connString)
        Dim cmd As New SqlCommand(sql, conn)
        cmd.Parameters.Add("@Name", SqlDbType.VarChar)
        cmd.Parameters("@Name").Value = newName
        Try
            conn.Open()
            newProdID = Convert.ToInt32(cmd.ExecuteScalar())
        Catch ex As Exception
            Console.WriteLine(ex.Message)
        End Try
    End Using

    Return newProdID
End Function

To display the list of stored procedure containing text in Sql Server

To display the list of  stored procedure containing text in Sql Server


DECLARE @Search varchar(255) SET @Search='CNC_EmailResults_Other'
SELECT DISTINCT o.name AS Object_Name,o.type_desc  FROM sys.sql_modules  m    INNER JOIN sys.objects
o ON m.object_id=o.object_id     WHERE m.definition Like '%'+@Search+'%'     ORDER BY 2,1

To find the text in the stored procedure in Sql server

To find the text in the stored procedure in Sql server



declare @newString varchar(205)
Set @newString = '%' + 'CNC_EmailResults_Other' + '%'
-- Insert statements for procedure here
select name from sysobjects where id in
(select id from syscomments where text like @newString)
order by name