troubleshooting Question

SQL String Comparison

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PAGANEDFlag for United States of America asked on
Microsoft SQL Server
17 Comments1 Solution558 ViewsLast Modified:
We have a table that has problem control codes. These codes are assigned to different teams such as ACCT, MULT, BUYR, DATA, EXPD, and WHSE. Some of these problem codes are assigned more than once. Examples:

ProblemControlID = 3
ProblemGroupString = ACCT, EXPD

ProblemControlID = 9
ProblemGroupString = DATA,ACCT,EXPD

If we cycle the cursor for all the records and concatenate, we would end up with a ProblemGroupStringCombined = ACCT,EXPD,DATA,ACCT,EXPD

We want this result:
ProblemGroupStringCombined  = ACCT, EXPD, DATA

In other words, we don't want to repeat any duplicate groups
.
Here is our cursor code that we've been trying to play with.
............................
DECLARE @ProblemGroupStringCombined nvarchar(500)
SET @ProblemGroupStringCombined =  ''
DECLARE ProblemGroupStringCursor CURSOR FOR
SELECT ProblemGroupString FROM tblProblemControlTemp WHERE ProjectID = @ProjectID 
OPEN ProblemGroupStringCursor FETCH NEXT FROM ProblemGroupStringCursor INTO @ProblemGroupString
WHILE @@FETCH_STATUS = 0
BEGIN
	IF @ProblemGroupString is not null
	BEGIN
		SET @ProblemGroupStringCombined = case when charindex(isnull(@ProblemGroupString,''), isnull(@ProblemGroupStringCombined,'')) = 0 then isnull(@ProblemGroupStringCombined,'') + isnull(@ProblemGroupStringCombined,'') else isnull(@ProblemGroupStringCombined,'') end
		
	END
FETCH NEXT FROM ProblemGroupStringCursor INTO @ProblemGroupString
END
CLOSE ProblemGroupStringCursor 
DEALLOCATE ProblemGroupStringCursor   
       

Select @ProblemGroupStringCombined = SUBSTRING (@ProblemGroupStringCombined,1,Len(@ProblemGroupStringCombined)-1)

INSERT INTO #tblProblemString VALUES (@ProjectID, @ProblemString, @ProblemGroupStringCombined)
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