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barcode with vb.net LINQ to SQL and stored procedures in C#
LINQ to SQL and stored procedures Code128 Creation In C#.NET Using Barcode creator for .NET framework Control to generate, create USS Code 128 image in .NET framework applications. www.OnBarcode.comUSS Code 128 Scanner In C#.NET Using Barcode reader for VS .NET Control to read, scan read, scan image in .NET framework applications. www.OnBarcode.comLINQ to SQL and stored procedures
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Barcode Creator In Visual C#.NET Using Barcode generation for VS .NET Control to generate, create Barcode image in Visual Studio .NET applications. www.OnBarcode.comEAN / UCC - 14 Generation In Visual C#.NET Using Barcode generation for .NET Control to generate, create UCC-128 image in .NET applications. www.OnBarcode.comAdoption of LINQ to SQL and EF will discourage the use of stored procedures to return rowsets. In addition, the code generators will use a subset of T-SQL query constructs, that is, only the constructs that the LINQ or ESQL language supports, rather than the full power of the T-SQL query language. Aficionados always think that a stored procedure represents a contract between consumer and provider. Although the database metadata indicates number and type of parameters, and comprises a contract, this is absolutely not true for rowsets returned by stored procedures. There is no database metadata that records anything about the returned rowsets, or even how many rowsets a stored procedure will return. In addition, errors that occur in the middle of a stored procedure might result in rowsets not being returned. Finally, there s always the possibility of returning multiple and/or different rowsets by using a stored procedure with conditional code. That s not much of a rowset contract at all. One way to ameliorate this problem in SQL Server is to use multi-statement tablevalued functions to return one rowset with known metadata. The main problem with this is performance; a multi-statement table-valued function (TVF) is the equivalent of filling a table variable in code and then returning it. Almost always there is extra disk I/O involved: the I/O of reading the base tables, plus the I/O of filling the table variable, plus the I/O of reading the table variable at the consumer. There are also performance considerations as SQL Server table variables have no statistics. Therefore if the table-valued function is used as a row source in a larger query, there is no way to estimate the number of rows returned by the TVF. SQL Server 2008 s strongly typed tablevalued parameters would be an analogous concept, but currently these are limited to being input-only in procedures. No strongly typed rowset result is currently supported. Now that we ve determined that there is no more of a rowset contract for stored procedures than for ad hoc SQL (the difference is in SQL encapsulation), what about T-SQL extensions that Entity SQL doesn t support There are database-specific extensions like SQL Server s PIVOT operator, or ANSI SQL standards, like ranking and windowing functions. LINQ aficionados are quick to talk about implementation through extension methods but the long and short of this is that these are a LINQ-ism, unrelated to LINQ to SQL. That is, the LINQ construct to SQL dialect statement mapping is fixed and embedded in the LINQ to SQL product. Using extensions to the SQL statement mapping can t change which T-SQL statement is produced. To control what is produced, you d need to implement equivalent concepts on the client side and leave the generated database code alone. Drawing ECC200 In C#.NET Using Barcode creation for Visual Studio .NET Control to generate, create Data Matrix image in VS .NET applications. www.OnBarcode.comDrawing Code 2 Of 5 In C# Using Barcode printer for .NET framework Control to generate, create C 2 of 5 image in .NET applications. www.OnBarcode.comLINQ to SQL and ADO.NET Entity Framework
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