convert string to barcode c# St a t e m e nt s for Cr e a t in g a nd M a n a gin g UD Fs in VB.NET

Paint ECC200 in VB.NET St a t e m e nt s for Cr e a t in g a nd M a n a gin g UD Fs

St a t e m e nt s for Cr e a t in g a nd M a n a gin g UD Fs
ECC200 Encoder In Visual Basic .NET
Using Barcode printer for .NET framework Control to generate, create Data Matrix 2d barcode image in Visual Studio .NET applications.
www.OnBarcode.com
Decode Data Matrix In VB.NET
Using Barcode reader for .NET framework Control to read, scan read, scan image in .NET framework applications.
www.OnBarcode.com
You can cr eat e and m anipulat e UDFs w it h st at em ent s perform ing fam iliar funct ions for ot her SQL Ser ver dat abase obj ect s. These st at em ent s ar e CREATE FUNCTI ON, ALTER FUNCTI ON, and DROP FUNCTI ON. Because of t he divergence in t ypes of UDFs, t he sy nt ax for t he CREATE FUNCTI ON and ALTER FUNCTI ON st at em ent s differs as w ell; t her e ar e t hr ee variat ions of each of t hese t wo st at em ent s t o m at ch t he corr esponding UDF t y pes. I n cont rast , a single DROP FUNCTI ON sy nt ax suffices for all t hr ee UDF t ypes. Trail t he keyword phrase w it h t he nam e of t he funct ion t hat y ou want r em ov ed fr om a dat abase. You can use t he I NFORMATI ON_SCHEMA. ROUTI NES v iew t o det ect t he ex ist ence of a prev iously exist ing version of a UDF. The CREATE FUNCTI ON st at em ent for a scalar UDF has sev eral im port ant argum ent s wit h a variet y of var iat ions bey ond t hose depict ed in t he follow ing t em plat e. The funct ion_nam e argum ent is a st andard SQL Serv er ident ifier . Howev er, as w it h ot her obj ect s, you m ay care t o use a prefix t o m ak e it easy t o ident ify UDF obj ect s vs. ot her t ypes of obj ect s. This chapt er uses udf as t he first t hr ee charact ers of all UDF nam es. The input param et ers for a UDF r eside w it hin parent heses follow ing t he funct ion nam e. St art each param et er nam e wit h t he @ sign, and t hen m ake t he rest of t he param et er nam e charact ers follow SQL Serv er ident ifier r ules. Designat e a dat a t ype for each par am et er wit h a space delim it er aft er t he param et er nam e. Delim it m ult iple param et er declarat ions wit h com m as. You can opt ionally designat e a default v alue for param et ers wit h an equal sign ( = ) follow ed by a value aft er t he dat a t ype specificat ion for any param et er w it h a default v alue.
Making Barcode In VB.NET
Using Barcode generator for .NET Control to generate, create barcode image in .NET framework applications.
www.OnBarcode.com
Scanning Barcode In VB.NET
Using Barcode decoder for .NET Control to read, scan read, scan image in VS .NET applications.
www.OnBarcode.com
Designat e a dat a t ype for t he scalar UDF w it h t he RETURNS keyword. The RETURNS k eyw ord and it s t railing dat a t ype specificat ion m ake up t he RETURNS clause w it hin t he CREATE FUNCTI ON st at em ent . Use t he AS keyword t o m ark t he t ransit ion from funct ion declar at ions t o T- SQL code for t he funct ion. The T- SQL code for a scalar UDF m ust appear bet ween BEGI N and END keywords. The RETURN k eyw ord w it hin t he BEGI N END block m ar ks t he ex pr ession t hat specifies t he ret urn value from t he scalar UDF. The RETURN k eyw ord and it s expression argum ent ar e anot her cr it ical clause wit hin t he CREATE FUNCTI ON st at em ent , as show n in t his code t em plat e: CREATE FUNCTION function_name (parameter_names and data types) RETURNS data type for return value AS BEGIN T-SQL statements for UDF RETURN (expression for scalar return value) END The follow ing CREATE FUNCTI ON st at em ent t em plat e illust rat es t he sy nt ax for creat ing an inline t able- valued UDF. The funct ion nam e and param et er declarat ions follow t he sam e conv ent ions as for t he CREATE FUNCTI ON st at em ent for a scalar UDF. The RETURNS and TABLE key words t oget her m ake up t he RETURNS clause for an inline UDF. This clause designat es a t able as t he r et urn dat a t ype fr om t he UDF. The t em plat e follows t he ret ur n dat a t ype specificat ion wit h t he AS k eyw ord t hat m arks t he t ransit ion bet ween t he declarat ions and t he T- SQL code for t he funct ion. When you r e gener at ing an inline t able- v alued UDF, t he only T- SQL code is a single SELECT st at em ent t hat serv es as t he argum ent for t he RETURN k eyw ord. The SELECT st at em ent is t he equiv alent of t he expression for t he scalar r et urn v alue in t he pr eceding t em plat e. CREATE FUNCTION function_name (parameter_names and data types) RETURNS TABLE AS RETURN (SELECT statement) The CREATE FUNCTI ON t em plat e for a m ult ist at em ent t able- v alued UDF t hat appears next has a different design from t hat of eit her of t he t wo pr eceding t em plat es. I n fact , t he t em plat e bor r ows elem ent s fr om each of t he pr eceding t em plat es and adds it s own unique elem ent . The funct ion nam e and param et er declarat ions ar e t he sam e as in t he preceding t wo t em plat es. The RETURNS keyw ord denot es a t able dat a t ype ( w it h t he TABLE keyw ord) as t he ret ur n dat a t ype for t he funct ion. The synt ax of a CREATE FUNCTI ON st at em ent for a m ult ist at em ent t able- valued UDF r equires a t able nam e bet w een t he RETURNS keyw ord and t he TABLE keyword. The t able nam e follows t he sam e conv ent ions as param et ers and local var iables. ( Don t forget t he leading @ sign. ) Anot her unique elem ent of t he CREATE FUNCTI ON t em plat e for a m ult ist at em ent t ablevalued UDF is t he colum n declarat ions ar ea t hat appears aft er t he TABLE k eyw ord specify ing t he ret urn dat a t ype and t he AS k ey word. Colum n declarat ions include colum n nam es, dat a t ype specificat ions, and opt ional colum n specificat ions for t he prim ary key , a unique index, or a check const raint . The RETURNS clause for a m ult ist at em ent t able- valued UDF st art s wit h t he RETURNS k eyw ord and r uns t hr ough t he colum n specificat ions. The T- SQL st at em ent s in t he BEGI N END
Data Matrix Generator In Visual C#.NET
Using Barcode creator for .NET Control to generate, create Data Matrix 2d barcode image in Visual Studio .NET applications.
www.OnBarcode.com
Paint ECC200 In Visual Studio .NET
Using Barcode maker for ASP.NET Control to generate, create Data Matrix image in ASP.NET applications.
www.OnBarcode.com
block m ust include one or m ore I NSERT st at em ent s t hat r efer back t o t he t able nam e in t he RETURNS clause. These I NSERT st at em ent s populat e t he t able ret ur ned by t he UDF. The T- SQL code in your BEGI N END block can opt ionally include UPDATE and DELETE st at em ent s t hat assist in r efining t he result set ret ur ned by t he UDF. The RETURN keyw ord wit hin t he BEGI N END block signals t he end of processing in t he UDF. CREATE FUNCTION function_name (parameter_names and data types) RETURNS table_name TABLE (column declarations) AS BEGIN T-SQL statements for UDF RETURN END CREATE FUNCTI ON st at em ent s support t he assignm ent of t w o opt ional funct ion specificat ions, using t he keywords ENCRYPTI ON and SCHEMABI NDI NG. Designat e eit her of t hese specificat ions follow ing a WI TH k eyw ord. Place t he designat ion j ust befor e t he AS k eyw ord. I f you inv ok e t he ENCRYPTI ON opt ion, r em em ber t o preserv e an unencrypt ed version of y our funct ion for fut ure edit ing. Aft er inv ok ing t he SCHEMABI NDI NG opt ion for a UDF, any t ables or v iews on which t he funct ion relies cannot change unt il y ou eit her drop t he UDF or m odify t he UDF wit h t he ALTER FUNCTI ON st at em ent . Sev eral special r ules apply when y ou apply t he SCHEMABI NDI NG opt ion t o a funct ion. See t he Argum ent s sect ion of t he CREATE FUNCTI ON t opic in Books Online for t he r ules.
DataMatrix Generation In .NET
Using Barcode maker for .NET framework Control to generate, create Data Matrix 2d barcode image in Visual Studio .NET applications.
www.OnBarcode.com
Code 128C Creation In VB.NET
Using Barcode generator for .NET Control to generate, create Code 128 Code Set C image in VS .NET applications.
www.OnBarcode.com
Making Matrix 2D Barcode In Visual Basic .NET
Using Barcode encoder for .NET Control to generate, create Matrix 2D Barcode image in Visual Studio .NET applications.
www.OnBarcode.com
USS-128 Printer In Visual Basic .NET
Using Barcode creation for Visual Studio .NET Control to generate, create GS1-128 image in Visual Studio .NET applications.
www.OnBarcode.com
UPC-A Drawer In VB.NET
Using Barcode creator for Visual Studio .NET Control to generate, create UPC Code image in .NET applications.
www.OnBarcode.com
Printing MSI Plessey In Visual Basic .NET
Using Barcode printer for Visual Studio .NET Control to generate, create MSI Plessey image in Visual Studio .NET applications.
www.OnBarcode.com
Decode Barcode In VS .NET
Using Barcode scanner for .NET Control to read, scan read, scan image in .NET framework applications.
www.OnBarcode.com
Linear Barcode Encoder In Visual C#.NET
Using Barcode creator for .NET framework Control to generate, create 1D image in Visual Studio .NET applications.
www.OnBarcode.com
Painting ECC200 In Visual Studio .NET
Using Barcode generation for Visual Studio .NET Control to generate, create Data Matrix image in .NET framework applications.
www.OnBarcode.com
EAN / UCC - 13 Scanner In C#.NET
Using Barcode decoder for VS .NET Control to read, scan read, scan image in Visual Studio .NET applications.
www.OnBarcode.com
Generating ECC200 In None
Using Barcode generation for Software Control to generate, create Data Matrix image in Software applications.
www.OnBarcode.com
Code 128B Drawer In Objective-C
Using Barcode printer for iPhone Control to generate, create Code 128 image in iPhone applications.
www.OnBarcode.com
Encoding GS1-128 In None
Using Barcode generator for Microsoft Word Control to generate, create EAN / UCC - 14 image in Microsoft Word applications.
www.OnBarcode.com
Reading UPC - 13 In .NET Framework
Using Barcode recognizer for .NET Control to read, scan read, scan image in .NET framework applications.
www.OnBarcode.com
Copyright © OnBarcode.com . All rights reserved.