Go Premium for a chance to win a PS4. Enter to Win

x
Solved

# T-SQL into C#

Posted on 2011-03-08
Medium Priority
227 Views
Need to convert the following T-SQL code into C#

``````ALTER FUNCTION [dbo].[charcheck]
(@hs1 nvarchar(100),@hs2  nvarchar(100))

RETURNS numeric(5,2)

AS
BEGIN
declare @l1 as int,@l2 as int,@p1 int
declare @r1 as nvarchar(100),@r2 as nvarchar(100)

set @l1=len(@hs1)
set @l2=len(@hs2)

set @r1=@hs1
set @r2=@hs2

declare @i as int
declare @rst as int
set @i=1

while @i <= @l2
begin
set @p1=charindex(substring(@hs2,@i,1),@r1)
if @p1>0
set @r1=stuff(@r1,@p1,1,'')
set @i=@i+1
end

set @rst=len(@r1)

set @i=1
while @i <= @l1
begin
set @p1=charindex(substring(@hs1,@i,1),@r2)
if @p1>0
set @r2=stuff(@r2,@p1,1,'')
set @i=@i+1
end
set @rst=@rst+len(@r2)

declare @retval as numeric(5,2)
declare @som2 as numeric(5,2)

set @som2=cast((@l1+@l2) as numeric(5,2))
set @retval=((@l1+@l2-@rst)/@som2)*100
return @Retval
end
``````
0
Question by:EasyCode

LVL 1

Expert Comment

ID: 35067230
first tell me what you want to acheive through this code.
0

Author Comment

ID: 35067481
Check performance between C# and TSQL. This TSQL function does a lot of string-manipulation and that is a weak spot in TSQL compared to C#.

This functions matches 2 strings and returns value on a scale of 100. 100 means exact match.
0

Author Comment

ID: 35067805

This code is part of the complete TSQL function and does individual character matching between 2 strings.
0

LVL 7

Expert Comment

ID: 35067971
Are you allowed to use LINQ (C# 3)?
0

Author Comment

ID: 35067976
Sure I'm
0

LVL 9

Expert Comment

ID: 35069467
Hello EasyCode:

Find C# code below to get started: Let me know the exact logic so I can post better code.
``````class Program
{
static void Main(string[] args)
{
Program pr = new Program();
pr.GetValues("12", "123");
}

public decimal GetValues(string val1, string val2)
{

int l1, l2, p1,i=1,rst;
string r1 = val1, r2 = val2, s1 = String.Empty, s2 = String.Empty;
l1 = val1.Length; l2 = val2.Length;

Char[]  myCharArray;

while (i < l2)
{
p1 = Convert.ToInt32(r1.IndexOf(val2.Substring(i, 1)));
if (p1 > 0)
{
myCharArray = r1.ToCharArray();
myCharArray[p1] = ' ';
r1 = new string(myCharArray);
}
i++;
}
foreach (char c in r1)
{
if (Convert.ToInt32(c) != 32)
s1 += c;
}

rst = s1.Length;
i = 1;
while (i < l1)
{
p1 = Convert.ToInt32(r2.IndexOf(val1.Substring(i, 1)));
if (p1 > 0)
{
myCharArray = r2.ToCharArray();
myCharArray[p1] = ' ';

r2 = new string(myCharArray);
}
i++;
}
foreach (char c in r2)
{
if (Convert.ToInt32(c) != 32)
s2 += c;
}

rst = rst + s2.Length;

decimal som2 = Convert.ToDecimal(l1 + l2);
decimal retVal = ((l1 + l2 - rst) / som2) * 100;

return retVal;
}
}
``````
0

LVL 9

Accepted Solution

gery128 earned 2000 total points
ID: 35069924
Hello EasyCode,

Refer this code, I by mistake initialized counter variable i as 1 in last code. You can change following
lines and run again.

int l1, l2, p1,i=1,rst; with this line: int l1, l2, p1,i=0,rst;  and
i=1; with i=0;

I have pasted full code for your reference.

``````using System;
using System.Collections.Generic;
using System.Text;

namespace SQLFunctionTest
{
class Program
{
static void Main(string[] args)
{
Program pr = new Program();
pr.GetValues("12345", "123");
}

public decimal GetValues(string val1, string val2)
{

int l1, l2, p1,i=0,rst;
string r1 = val1, r2 = val2, s1 = String.Empty, s2 = String.Empty;
l1 = val1.Length; l2 = val2.Length;

Char[]  myCharArray;

while (i < l2)
{
p1 = Convert.ToInt32(r1.IndexOf(val2.Substring(i, 1)));
if (p1 >= 0)
{
myCharArray = r1.ToCharArray();
myCharArray[p1] = ' ';
r1 = new string(myCharArray);
}
i++;
}
foreach (char c in r1)
{
if (Convert.ToInt32(c) != 32)
s1 += c;
}

rst = s1.Length;
i = 0;
while (i < l1)
{
p1 = Convert.ToInt32(r2.IndexOf(val1.Substring(i, 1)));
if (p1 >= 0)
{
myCharArray = r2.ToCharArray();
myCharArray[p1] = ' ';

r2 = new string(myCharArray);
}
i++;
}
foreach (char c in r2)
{
if (Convert.ToInt32(c) != 32)
s2 += c;
}

rst = rst + s2.Length;

decimal som2 = Convert.ToDecimal(l1 + l2);
decimal retVal = ((l1 + l2 - rst) / som2) * 100;

return retVal;
}
}
}
``````
0

Author Comment

ID: 35107582
0

## Featured Post

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction This article series is supposed to shed some light on the use of IDisposable and objects that inherit from it. In essence, a more apt title for this article would be: using (IDisposable) {}. I’m just not sure how many people would ge…
Exception Handling is in the core of any application that is able to dignify its name. In this article, I'll guide you through the process of writing a DRY (Don't Repeat Yourself) Exception Handling mechanism, using Aspect Oriented Programming.
This Micro Tutorial will teach you how to add a cinematic look to any film or video out there. There are very few simple steps that you will follow to do so. This will be demonstrated using Adobe Premiere Pro CS6.
Is your data getting by on basic protection measures? In today’s climate of debilitating malware and ransomware—like WannaCry—that may not be enough. You need to establish more than basics, like a recovery plan that protects both data and endpoints.…
###### Suggested Courses
Course of the Month12 days, 14 hours left to enroll