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split string and compare

Author

Topic

shanmugaraj
Posting Yak Master

219 Posts

Posted - 2013-04-19 : 07:39:57

I have 2 parameters in my Stored Procdure. I want to find the values not in 2nd parameter

str_emp_chennai = 'Raj,Kumar,Selvam'

str_emp_delhi = 'Kannan,Raj,Gopal'

I need result to be

str_new_emp = 'Kumar,Selvam'

The employee and the name as for represntaion. my scneario have other values. kinldy help me with logic for spliting and comparing string based on ","

THANKS
SHANMUGARAJ
nshanmugaraj@gmail.com

bandi
Master Smack Fu Yak Hacker

2242 Posts

Posted - 2013-04-19 : 08:05:10

Create one UDF to split CSV and then run the following query

-- UDF: CustomSplit
CREATE FUNCTION [dbo].[CustomSplit] (@sep char(1), @s varchar(4000))
RETURNS table
AS
RETURN (
WITH Pieces(n, start, stop) AS (
SELECT 1, 1, CHARINDEX(@sep, @s)
UNION ALL
SELECT n + 1, stop + 1, CHARINDEX(@sep, @s, stop + 1)
FROM Pieces
WHERE stop > 0
)
SELECT n,
SUBSTRING(@s, start, CASE WHEN stop > 0 THEN stop-start ELSE 4000 END) AS Val
FROM Pieces
)
GO

-- Query to get required output
DECLARE @str_emp_chennai VARCHAR(1000)= 'Raj,Kumar,Selvam'

DECLARE @str_emp_delhi VARCHAR(1000) = 'Kannan,Raj,Gopal'

SELECT STUFF((SELECT ','+ Val 
				FROM (SELECT Val FROM CustomSplit(',', @str_emp_chennai)
						EXCEPT
						SELECT Val FROM CustomSplit(',', @str_emp_delhi)
					 ) t
				FOR XML PATH ('')
			), 1, 1, '')

--
Chandu

shanmugaraj
Posting Yak Master

219 Posts

Posted - 2013-04-19 : 08:12:32

can you give me in stored procedure

THANKS
SHANMUGARAJ
nshanmugaraj@gmail.com

bandi
Master Smack Fu Yak Hacker

2242 Posts

Posted - 2013-04-19 : 08:19:12

whats the problem with UDF (user-Defines Function) for Splitting?

--
Chandu

shanmugaraj
Posting Yak Master

219 Posts

Posted - 2013-04-19 : 08:36:04

Since we dont have any function in this project till now , i would like to have in SP if possible

THANKS
SHANMUGARAJ
nshanmugaraj@gmail.com

bandi
Master Smack Fu Yak Hacker

2242 Posts

Posted - 2013-04-19 : 09:09:08

[code]GO
CREATE PROCEDURE Split_CompareProc(
@Param1 VARCHAR(2000),
@Param2 VARCHAR(2000),
@Result VARCHAR(2000) OUTPUT
)
AS
BEGIN

SELECT @Result = ISNULL(@Result, '') + ',' + wrd
FROM
(SELECT p.q.value('.', 'varchar(100)') as wrd
FROM (SELECT CAST('<Values><Value>' + REPLACE( @Param1 , ',', '</Value><Value>')
+ '</Value></Values>' AS xml) AS m)t
CROSS APPLY m.nodes('/Values/Value')p(q)
EXCEPT
SELECT p.q.value('.', 'varchar(100)') as wrd
FROM (SELECT CAST('<Values><Value>' + REPLACE( @Param2 , ',', '</Value><Value>')
+ '</Value></Values>' AS xml) AS m)t
CROSS APPLY m.nodes('/Values/Value')p(q)
) tmp

SELECT STUFF(@result, 1, 1, '')
END
GO

DECLARE @str_emp_chennai VARCHAR(1000)= 'Raj,Kumar,Selvam', @result VARCHAR(2000)
DECLARE @str_emp_delhi VARCHAR(1000) = 'Kannan,Raj,Gopal'
EXEC Split_CompareProc @str_emp_chennai, @str_emp_delhi, @result OUT
/*Output: Kumar,Selvam */
[/code]

--
Chandu

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