Select distinct values - SQL Server Forums

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Select distinct values

Author

Topic

MariusC
Starting Member

16 Posts

Posted - 2014-06-25 : 06:31:57

webfred
Master Smack Fu Yak Hacker

8781 Posts

Posted - 2014-06-25 : 06:36:26

change min() to max() and btw. you don't need distinct because you are using group by.

Too old to Rock'n'Roll too young to die.

Ifor
Aged Yak Warrior

700 Posts

Posted - 2014-06-25 : 06:44:00


-- *** Test Data ***
CREATE TABLE #t
(
	tel_no varchar(20) NOT NULL
	,code varchar(20) NOT NULL
	,id_res int NOT NULL
);
INSERT INTO #t
SELECT '0742062141', 'a-not answer', 1
UNION ALL SELECT '0742062141', 'a-not answer', 2
UNION ALL SELECT '0742062141', 'c-answer', 3
UNION ALL SELECT '0754231456', 'a-not answer',  4
UNION ALL SELECT '0754231456', 'a-not answer', 5;
-- *** End Test Data ***

WITH PhoneOrder
AS
(
	SELECT tel_no, code, id_res
		,ROW_NUMBER() OVER (PARTITION BY tel_no ORDER BY code DESC, id_res) AS rn
	FROM #t
)
SELECT tel_no, code, id_res
FROM PhoneOrder
WHERE rn = 1;

MariusC
Starting Member

16 Posts

Posted - 2014-06-25 : 06:45:29

That worked :D

Thanks very much!

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