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Not update the duplicate type

Author

Topic

Flaterik
Starting Member

26 Posts

Posted - 2012-09-25 : 09:58:55

Hi people i have a table like this

COD TYPE VALUE DEFAULT
C001 WWW XXXX 0
C001 EMAIL YYY 0
C001 EMAIL ZZZ 0
C001 CEL NNN 0
C002 WWW XXXX 0

etc etc

So i must update the filed 0 with 1
But because of a key value, i can update from 0 to 1 the same field of the same customer
So i mus put 1 only on C001 EMAIL YYY , not in C001 EMAIL ZZZ.
HOw i can remove the duplicated type grouped by COD? I can order this with another field

************************************************
the world is strange but people are crazy

Ifor
Aged Yak Warrior

700 Posts

Posted - 2012-09-25 : 10:23:37

[code]
-- *** Test Data ***
CREATE TABLE #t
(
COD char(4) NOT NULL
,[Type] varchar(5) NOT NULL
,Value varchar(5) NOT NULL
,[Default] int NOT NULL
);
INSERT INTO #t
SELECT 'C001', 'WWW', 'XXXX', 0
UNION ALL SELECT 'C001', 'EMAIL', 'YYY', 0
UNION ALL SELECT 'C001', 'EMAIL', 'ZZZ', 0
UNION ALL SELECT 'C001', 'CEL', 'NNN', 0
UNION ALL SELECT 'C002', 'WWW', 'XXXX', 0;
-- *** End Test Data ***

select * from #t;

WITH CODTypeOrder
AS
(
SELECT *
,ROW_NUMBER() OVER (PARTITION BY COD, [Type] ORDER BY Value) rn
FROM #t
)
UPDATE CODTypeOrder
SET [Default] = 1
WHERE rn = 1;

select * from #t;
[/code]

Flaterik
Starting Member

26 Posts

Posted - 2012-09-25 : 11:17:21

Hi, thank you very much for the response.

It's right what you say to me but ther's another problem

I must update a table of my db called PeopleAddressMedia.
How i can do this? In your solution you create a CTE and update this

I must update the other table
Thanks

************************************************
the world is strange but people are crazy

Ifor
Aged Yak Warrior

700 Posts

Posted - 2012-09-25 : 11:52:53

[code]
WITH CODTypeOrder
AS
(
SELECT *
,ROW_NUMBER() OVER (PARTITION BY COD, [Type] ORDER BY Value) rn
FROM PeopleAddressMedia
)
UPDATE CODTypeOrder
SET [Default] = 1
WHERE rn = 1;
[/code]

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