Estimated lesson time: 20 minutes in .NET

Generator PDF-417 2d barcode in .NET Estimated lesson time: 20 minutes

Estimated lesson time: 20 minutes
PDF417 Creator In Visual Studio .NET
Using Barcode creator for Visual Studio .NET Control to generate, create PDF 417 image in .NET applications.
www.OnBarcode.com
Scanning PDF-417 2d Barcode In Visual Studio .NET
Using Barcode scanner for Visual Studio .NET Control to read, scan read, scan image in .NET framework applications.
www.OnBarcode.com
Creating a Stored Procedure
Bar Code Creation In .NET Framework
Using Barcode encoder for Visual Studio .NET Control to generate, create bar code image in .NET applications.
www.OnBarcode.com
Bar Code Recognizer In .NET Framework
Using Barcode scanner for VS .NET Control to read, scan read, scan image in VS .NET applications.
www.OnBarcode.com
Stored procedures can contain virtually any construct or command that is possible to execute within SQL Server. You can use procedures to modify data, return scalar values, or return entire result sets. Stored procedures also provide a very important security function within a database. You can grant users permission to execute stored procedures that access data without having to grant them the ability to directly access the data. Even more important, stored procedures hide the structure of a database from a user as well as only permit users to perform operations that are coded within the stored procedure. The general Transact-SQL syntax for creating a stored procedure is the following:
Print PDF 417 In Visual C#.NET
Using Barcode generation for Visual Studio .NET Control to generate, create PDF-417 2d barcode image in .NET framework applications.
www.OnBarcode.com
PDF-417 2d Barcode Creation In .NET
Using Barcode generator for ASP.NET Control to generate, create PDF-417 2d barcode image in ASP.NET applications.
www.OnBarcode.com
CREATE { PROC | PROCEDURE } [schema_name.] procedure_name [ ; number ] [ { @parameter [ type_schema_name. ] data_type } [ OUT | OUTPUT ] ] [ ,...n ] [ WITH <procedure_option> [ ,...n ] ] [ FOR REPLICATION ] AS { <sql_statement> [;][ ...n ] | <method_specifier> } [;]
Drawing PDF417 In Visual Basic .NET
Using Barcode maker for Visual Studio .NET Control to generate, create PDF 417 image in Visual Studio .NET applications.
www.OnBarcode.com
Bar Code Maker In .NET
Using Barcode drawer for VS .NET Control to generate, create bar code image in .NET applications.
www.OnBarcode.com
Lesson 2: Implementing Stored Procedures
Print Bar Code In Visual Studio .NET
Using Barcode maker for .NET framework Control to generate, create bar code image in VS .NET applications.
www.OnBarcode.com
Drawing QR Code JIS X 0510 In Visual Studio .NET
Using Barcode generator for VS .NET Control to generate, create Quick Response Code image in Visual Studio .NET applications.
www.OnBarcode.com
<procedure_option> ::= [ ENCRYPTION ] [ RECOMPILE ] [ EXECUTE_AS_Clause ] <sql_statement> ::= { [ BEGIN ] statements [ END ] } <method_specifier> ::= EXTERNAL NAME assembly_name.class_name.method_name
Code128 Printer In .NET Framework
Using Barcode printer for VS .NET Control to generate, create Code 128 image in .NET framework applications.
www.OnBarcode.com
Printing C 2 Of 5 In Visual Studio .NET
Using Barcode generator for VS .NET Control to generate, create 2 of 5 Industrial image in .NET framework applications.
www.OnBarcode.com
Each procedure must have a name that is unique within the database and that conforms to the rules for object identifiers. Procedures can accept any number of input parameters, which are used within the stored procedure as local variables. You can also specify output parameters, which let a stored procedure pass one or more scalar values back to the routine that called the procedure. You can create procedures with three options. When you create a procedure with the ENCRYPTION option, SQL Server encrypts the procedure definition. Specifying the RECOMPILE option forces SQL Server to recompile the stored procedure each time the procedure is executed. The EXECUTE AS option provides a security context for the procedure.
Draw Bar Code In Java
Using Barcode maker for Java Control to generate, create barcode image in Java applications.
www.OnBarcode.com
Printing Code 128B In Java
Using Barcode printer for Android Control to generate, create USS Code 128 image in Android applications.
www.OnBarcode.com
BEST PRACTICES
Encoding UCC - 12 In Java
Using Barcode drawer for Java Control to generate, create UPC-A Supplement 2 image in Java applications.
www.OnBarcode.com
Printing UPC - 13 In Java
Using Barcode generation for Java Control to generate, create GTIN - 13 image in Java applications.
www.OnBarcode.com
Recompilation
Creating UCC-128 In Java
Using Barcode generation for Eclipse BIRT Control to generate, create UCC.EAN - 128 image in BIRT applications.
www.OnBarcode.com
Decoding EAN-13 In Visual Basic .NET
Using Barcode decoder for Visual Studio .NET Control to read, scan read, scan image in Visual Studio .NET applications.
www.OnBarcode.com
Stored procedures are compiled into the query cache when executed. Compilation creates a query plan as well as an execution plan. SQL Server can reuse the query plan for subsequent executions, which conserves resources. But the RECOMPILE option forces SQL Server to discard the query plan each time the procedure is executed and create a new query plan. There are only a few extremely rare cases when recompiling at each execution is beneficial, such as if you add a new index from which the stored procedure might benefit. Thus, you typically should not add the RECOMPILE option to a procedure when you create it.
Encoding EAN / UCC - 13 In .NET
Using Barcode creator for Reporting Service Control to generate, create UCC - 12 image in Reporting Service applications.
www.OnBarcode.com
DataMatrix Generation In Visual C#
Using Barcode creator for VS .NET Control to generate, create Data Matrix 2d barcode image in .NET applications.
www.OnBarcode.com
The body of the stored procedure contains the batch of commands you want to execute within the procedure. The following are the only commands that you cannot execute within a stored procedure:
SET SHOWPLAN_TEXT SET SHOWPLAN_ALL USE <database>
9
Creating Functions, Stored Procedures, and Triggers
The following code shows a sample stored procedure that logs errors in a table called ErrorLog:
CREATE PROCEDURE [dbo].[uspLogError] @ErrorLogID [int] = 0 OUTPUT -- contains the ErrorLogID of the row -- inserted by uspLogError in the AS -- ErrorLog table. BEGIN SET NOCOUNT ON; -- Output parameter value of 0 indicates that error -- information was not logged. SET @ErrorLogID = 0; BEGIN TRY -- Return if there is no error information to log. IF ERROR_NUMBER() IS NULL RETURN; -- Return if inside an uncommittable transaction. -- Data insertion/modification is not allowed when -- a transaction is in an uncommittable state. IF XACT_STATE() = -1 BEGIN PRINT 'Cannot log error since the current transaction is in an uncommittable state. ' + 'Rollback the transaction before executing uspLogError in order to successfully log error information.'; RETURN; END INSERT [dbo].[ErrorLog] ( [UserName], [ErrorNumber], [ErrorSeverity], [ErrorState], [ErrorProcedure], [ErrorLine], [ErrorMessage] ) VALUES ( CONVERT(sysname, CURRENT_USER), ERROR_NUMBER(), ERROR_SEVERITY(), ERROR_STATE(), ERROR_PROCEDURE(), ERROR_LINE(), ERROR_MESSAGE() );
Lesson 2: Implementing Stored Procedures
-- Pass back the ErrorLogID of the row inserted SET @ErrorLogID = @@IDENTITY; END TRY BEGIN CATCH PRINT 'An error occurred in stored procedure uspLogError: '; EXECUTE [dbo].[uspPrintError]; RETURN -1; END CATCH END;
Copyright © OnBarcode.com . All rights reserved.