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Concatenation of strings with condition check,,,


Concatenation of strings with condition check,,,

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Minnu
Minnu
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hi Team,

Need your help.............

My table contains below columns with values.

ColA ColB ColC ColD
-----------------------------
Admin NULL NULL NULL
Market 101 256 258
Sales 205 125 NULL
Admin 256 258 548


and i want output like below...

ColA:Admin,
ColA:Market, ColB:101 ColC:256 ColD:258
ColA:Sales : ColB:205 ColC:125
ColA:Admin : ColB:256 ColC:258 ColD:548

Trying with below login....but not getting exact query...
SELECT @query1 =
IF EXISTS (SELECT 1 from Table where colA ='Admin')
BEGIN

select 'ColA : ' + rtrim(ColA) + '


need your help plz...
Jeff Moden
Jeff Moden
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You could use either CASE or ISNULL or COALESCE for such a thing. I used ISNULL in the following example. Also, you would do better for yourself if you provided your data as readily consumable data so people can test their answer before posting it. See the first link in my signature below for an article on how to do that correctly.

 SELECT RTRIM(
+ 'ColA:'+ISNULL(ColA,'')+', '
+ ISNULL('ColB:'+CAST(ColB AS VARCHAR(10))+' ','')
+ ISNULL('ColC:'+CAST(ColC AS VARCHAR(10))+' ','')
+ ISNULL('ColD:'+CAST(ColD AS VARCHAR(10))+' ','')
)
FROM
( --=== Similation of your table. Use your table name here
SELECT 'Admin',NULL,NULL,NULL UNION ALL
SELECT 'Market',101,256,258 UNION ALL
SELECT 'Sales',205,125,NULL UNION ALL
SELECT 'Admin',256,258,548
)d(ColA,ColB,ColC,ColD)
;



--Jeff Moden

RBAR is pronounced ree-bar and is a Modenism for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
Stop thinking about what you want to do to a row... think, instead, of what you want to do to a column.
Although they tell us that they want it real bad, our primary goal is to ensure that we dont actually give it to them that way.
Although change is inevitable, change for the better is not.
Just because you can do something in PowerShell, doesnt mean you should. Wink

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Minnu
Minnu
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Hi thank U Very Much,

But small change..

If column B is NULL then ColC should not append to the string.

Please.....
Minnu
Minnu
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Hi Team,


BEGIN
SELECT RTRIM(
+ISNULL(Col_Name,'')+' : '
+ISNULL(+CAST(ColB AS VARCHAR(10))+' ','')
+ISNULL(' ColC :'+CAST(ColC AS VARCHAR(10))+' ','')
) FROM table_name
END

--

if ColB is NULL then ColC should not append .


Please help....
Sean Lange
Sean Lange
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Minnu (12/3/2012)
Hi Team,


BEGIN
SELECT RTRIM(
+ISNULL(Col_Name,'')+' : '
+ISNULL(+CAST(ColB AS VARCHAR(10))+' ','')
+ISNULL(' ColC :'+CAST(ColC AS VARCHAR(10))+' ','')
) FROM table_name
END

--

if ColB is NULL then ColC should not append .


Please help....


If I understand you correctly you just need to add a case in here. (note I also added some spacing so it is more legible)


SELECT RTRIM(
+ ISNULL(Col_Name, '') + ' : '
+ ISNULL(CAST(ColB AS VARCHAR(10)) + ' ', '')
+ case when ColB IS NULL then NULL else ISNULL(' ColC :' + CAST(ColC AS VARCHAR(10)) + ' ', '') end
) FROM table_name



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