c# qr code generator Inside Microsoft SQL Server 2008: T-SQL Querying in Visual C#.NET

Make QR Code JIS X 0510 in Visual C#.NET Inside Microsoft SQL Server 2008: T-SQL Querying

Inside Microsoft SQL Server 2008: T-SQL Querying
QR Code ISO/IEC18004 Printer In Visual C#.NET
Using Barcode generator for Visual Studio .NET Control to generate, create Quick Response Code image in Visual Studio .NET applications.
www.OnBarcode.com
QR Code ISO/IEC18004 Scanner In C#
Using Barcode recognizer for .NET framework Control to read, scan read, scan image in .NET framework applications.
www.OnBarcode.com
You get the following output:
Barcode Drawer In Visual C#
Using Barcode printer for .NET Control to generate, create bar code image in Visual Studio .NET applications.
www.OnBarcode.com
Decoding Bar Code In Visual C#
Using Barcode reader for .NET framework Control to read, scan read, scan image in .NET framework applications.
www.OnBarcode.com
empid emp ------ -------1 A 2 | B 4 | D 6 | F 8 | H 9 | | I 11 | | K 13 | | L 15 | | N 17 | | P 19 | | E 21 | | T 20 | | S 18 | | Q 16 | | O 14 | | M 12 | | J 10 | | J 7 | G 5 | E 3 | C hid ----------------0x 0x58 0x62C0 0x6316 0x6318B0 0x6318B580 0x6318B62C 0x6318B63160 0x6318B6318B 0x6318B6318C58 0x6318B6318C62C0 0x6318B6318C6316 0x6318B6318C6340 0x6318B6318C68 0x6318B6318D 0x6318B631A0 0x6318B634 0x6318B680 0x631A 0x6340 0x68 path ----------------------/ /1/ /1.1/ /1.1.1/ /1.1.1.1/ /1.1.1.1/1/ /1.1.1.1/1.1/ /1.1.1.1/1.1.1/ /1.1.1.1/1.1.1.1/ /1.1.1.1/1.1.1.1.1/ /1.1.1.1/1.1.1.1.1.1/ /1.1.1.1/1.1.1.1.1.1.1/ /1.1.1.1/1.1.1.1.1.2/ /1.1.1.1/1.1.1.1.2/ /1.1.1.1/1.1.1.2/ /1.1.1.1/1.1.2/ /1.1.1.1/1.2/ /1.1.1.1/2/ /1.1.2/ /1.2/ /2/
Generate QR Code 2d Barcode In Visual Studio .NET
Using Barcode maker for ASP.NET Control to generate, create QR Code JIS X 0510 image in ASP.NET applications.
www.OnBarcode.com
QR Code Creation In VS .NET
Using Barcode encoder for .NET framework Control to generate, create QR-Code image in Visual Studio .NET applications.
www.OnBarcode.com
As you can see, even though the tree is only three levels deep, some of the HIERARCHYID values became quite long because of the insertion order of children. The solution that normalizes the values involves the following steps: 1. De ne a CTE called EmpsRN that calculates for each node a row number, partitioned by parent and ordered by current hid value. 2. De ne a recursive CTE called EmpPaths that iterates through the levels of the tree, starting with the root node and proceeding to the next level of children in each iteration. Use this CTE to construct a new canonical path for the nodes. The root should be assigned the path /, and for each node in the next level the path is obtained by concatenating the parent s path, the current node s row number from the previous step, and another / character. 3. Join the Employees table with the EmpPaths CTE and update the existing hid values with new ones converted from the canonical paths generated in the previous step. Here s the code that performs this normalization process:
QR Code ISO/IEC18004 Maker In VB.NET
Using Barcode creator for .NET framework Control to generate, create QR Code image in VS .NET applications.
www.OnBarcode.com
Create ECC200 In C#
Using Barcode drawer for .NET framework Control to generate, create Data Matrix image in VS .NET applications.
www.OnBarcode.com
WITH EmpsRN AS ( SELECT empid, hid, ROW_NUMBER() OVER(PARTITION BY hid.GetAncestor(1) ORDER BY hid) AS rownum FROM dbo.Employees ),
Code 128 Code Set A Maker In Visual C#
Using Barcode generation for Visual Studio .NET Control to generate, create ANSI/AIM Code 128 image in .NET applications.
www.OnBarcode.com
UPC Code Generator In Visual C#
Using Barcode generator for .NET Control to generate, create UPC Code image in .NET applications.
www.OnBarcode.com
12
GS1 - 13 Generation In C#.NET
Using Barcode generation for .NET framework Control to generate, create EAN 13 image in .NET applications.
www.OnBarcode.com
ANSI/AIM Code 93 Generator In Visual C#.NET
Using Barcode generator for .NET framework Control to generate, create Code 93 Extended image in Visual Studio .NET applications.
www.OnBarcode.com
Graphs, Trees, Hierarchies, and Recursive Queries
Barcode Encoder In Visual Basic .NET
Using Barcode maker for Visual Studio .NET Control to generate, create barcode image in VS .NET applications.
www.OnBarcode.com
Create EAN-13 In None
Using Barcode drawer for Font Control to generate, create EAN13 image in Font applications.
www.OnBarcode.com
EmpPaths AS ( SELECT empid, hid, CAST('/' AS VARCHAR(900)) AS path FROM dbo.Employees WHERE hid = hierarchyid::GetRoot() UNION ALL SELECT C.empid, C.hid, CAST(P.path + CAST(C.rownum AS VARCHAR(20)) + '/' AS VARCHAR(900)) FROM EmpPaths AS P JOIN EmpsRN AS C ON C.hid.GetAncestor(1) = P.hid ) UPDATE E SET hid = CAST(EP.path AS HIERARCHYID) FROM dbo.Employees AS E JOIN EmpPaths AS EP ON E.empid = EP.empid;
GS1 - 13 Generator In .NET
Using Barcode generator for Reporting Service Control to generate, create GS1 - 13 image in Reporting Service applications.
www.OnBarcode.com
QR Code ISO/IEC18004 Decoder In Visual Basic .NET
Using Barcode recognizer for Visual Studio .NET Control to read, scan read, scan image in Visual Studio .NET applications.
www.OnBarcode.com
Now query the data after normalization:
PDF417 Generation In .NET
Using Barcode encoder for .NET Control to generate, create PDF417 image in .NET framework applications.
www.OnBarcode.com
Paint Code 128 Code Set A In None
Using Barcode printer for Word Control to generate, create Code128 image in Word applications.
www.OnBarcode.com
SELECT empid, REPLICATE(' | ', lvl) + empname AS emp, hid, hid.ToString() AS path FROM dbo.Employees ORDER BY hid;
Encoding QR Code In Java
Using Barcode generation for Java Control to generate, create QR Code image in Java applications.
www.OnBarcode.com
PDF-417 2d Barcode Creation In None
Using Barcode printer for Microsoft Excel Control to generate, create PDF417 image in Office Excel applications.
www.OnBarcode.com
As you can see in the output, you get nice compact paths:
empid emp ----------- -------1 A 2 | B 4 | D 6 | F 8 | H 9 | | I 11 | | K 13 | | L 15 | | N 17 | | P 19 | | E 21 | | T 20 | | S 18 | | Q 16 | | O 14 | | M 12 | | J 10 | | J 7 | G 5 | E 3 | C hid ------0x 0x58 0x68 0x78 0x84 0x8560 0x85A0 0x85E0 0x8610 0x8630 0x8650 0x8670 0x8688 0x8698 0x86A8 0x86B8 0x86C8 0x86D8 0x8C 0x94 0x9C path ------/ /1/ /2/ /3/ /4/ /4/1/ /4/2/ /4/3/ /4/4/ /4/5/ /4/6/ /4/7/ /4/8/ /4/9/ /4/10/ /4/11/ /4/12/ /4/13/ /5/ /6/ /7/
Inside Microsoft SQL Server 2008: T-SQL Querying
Convert Parent-Child Representation to HIERARCHYID
This section explains how to convert an existing representation of a tree that is based on an adjacency list (parent-child relationships) to one that is based on the HIERARCHYID data type. Run the following code to create and populate the EmployeesOld table that implements an adjacency list representation of an employee tree:
SET NOCOUNT ON; USE tempdb; GO IF OBJECT_ID('dbo.EmployeesOld') IS NOT NULL DROP TABLE dbo.EmployeesOld; GO IF OBJECT_ID('dbo.EmployeesNew') IS NOT NULL DROP TABLE dbo.EmployeesNew; GO CREATE TABLE dbo.EmployeesOld ( empid INT PRIMARY KEY, mgrid INT NULL REFERENCES dbo.EmployeesOld, empname VARCHAR(25) NOT NULL, salary MONEY NOT NULL ); CREATE UNIQUE INDEX idx_unc_mgrid_empid ON dbo.EmployeesOld(mgrid, empid); INSERT (1, (2, (3, (4, (5, (6, (7, (8, (9, (10, (11, (12, (13, (14, INTO dbo.EmployeesOld(empid, mgrid, empname, salary) VALUES NULL, 'David', $10000.00), 1, 'Eitan', $7000.00), 1, 'Ina', $7500.00), 2, 'Seraph', $5000.00), 2, 'Jiru', $5500.00), 2, 'Steve', $4500.00), 3, 'Aaron', $5000.00), 5, 'Lilach', $3500.00), 7, 'Rita', $3000.00), 5, 'Sean', $3000.00), 7, 'Gabriel', $3000.00), 9, 'Emilia' , $2000.00), 9, 'Michael', $2000.00), 9, 'Didi', $1500.00);
Run the following code to create the target EmployeesNew table that will represent the employee tree using HIERARCHYID values:
CREATE TABLE dbo.EmployeesNew ( empid INT NOT NULL PRIMARY KEY, hid HIERARCHYID NOT NULL, lvl AS hid.GetLevel() PERSISTED, empname VARCHAR(25) NOT NULL, salary MONEY NOT NULL );
The task is now to query the EmployeesOld table that contains the source data, calculate HIERARCHYID values for the employees, and populate the target EmployeesNew table.
Copyright © OnBarcode.com . All rights reserved.