March 20, 2008 at 8:20 am
Comments posted to this topic are about the item SQL Server 2005 Remove Dups - CTE
May 9, 2008 at 7:37 am
im getting an error on the With Dups portion of the code.
With Dups as
(
????select *, row_number() over
(partition by Product_Code order by Product_Code) as RowNum
????from #prod
)
Msg 102, Level 15, State 1, Line 3
Incorrect syntax near '?'.
Msg 102, Level 15, State 1, Line 5
Incorrect syntax near '?'.
May 9, 2008 at 8:14 am
Try running these two statements at the same time:
With Dups as
(
select *, row_number() over (partition by Product_Code order by Product_Code) as RowNum from #prod
)
Delete from Dups where rownum > 1;
May 9, 2008 at 8:30 am
That worked, thanks for the help.
May 10, 2008 at 1:07 am
Hi ,
CREATE TABLE #prod(Product_Code varchar(10),Product_Name varchar(100))
INSERT INTO #prod(Product_Code, Product_Name)
VALUES ('123','Product_1')
INSERT INTO #prod(Product_Code, Product_Name)
VALUES ('234','Product_2')
INSERT INTO #prod(Product_Code, Product_Name)
VALUES ('345','Product_3')
INSERT INTO #prod(Product_Code, Product_Name)
VALUES ('345','Product_3')
INSERT INTO #prod(Product_Code, Product_Name)
VALUES ('456','Product_4')
INSERT INTO #prod(Product_Code, Product_Name)
VALUES ('567','Product_5')
INSERT INTO #prod(Product_Code, Product_Name)
VALUES ('678','Product_6')
INSERT INTO #prod(Product_Code, Product_Name)
VALUES ('789','Product_7')
SELECT * FROM #prod;
With Dups as
(
select *, row_number() over (partition by Product_Code order by Product_Code) as RowNum from #prod
)
Delete from Dups where RowNum > 1;
In RowNum r and n was written in lower case for the delete command i changed it
Chandru.V
May 10, 2008 at 5:57 am
Nice script Tom, we've used it a couple of times already!
Thanks
Dave
October 4, 2008 at 1:55 am
Hi its good seeing that logic, but i have scenario
c1 c2 c3
1 a a1
1 a b1
1 a c1
2 b a7
2 b b4
3 c d4
3 c b5
3 c v5
4 d u7
in this data provided , i would like to pick up the first set of values
ex: 1 a a1
2 b a7
3 c d4
4 d u7
should be the out put( in sql server)
October 6, 2008 at 12:30 pm
Two things to address 1st.
1) You would have to make an assumption about the column you are sorting on. In this case c3, correct? That would be sorted based on a character sort, not numeric. Either that is ok or you would need to somehow parse that column to sort it differently.
2) How did you get "3 c d4" and not "3 c b5" back in your ideal recordset?
Here’s what I can up with. Hope that helps.
Tom
----DROP TABLE #temp
--CREATE TABLE #temp(
--c1 INT,
--c2 VARCHAR(1),
--c3 VARCHAR(6)
--)
--
--
--INSERT INTO #temp(c1,c2,c3)
--VALUES(1,'a','a1')
--
--INSERT INTO #temp(c1,c2,c3)
--VALUES(1,'a','b1')
--
--INSERT INTO #temp(c1,c2,c3)
--VALUES(1,'a','c1')
--
--INSERT INTO #temp(c1,c2,c3)
--VALUES(1,'a','a11')
--
--INSERT INTO #temp(c1,c2,c3)
--VALUES(1,'a','a9')
--
--INSERT INTO #temp(c1,c2,c3)
--VALUES(2,'b','a7')
--
--INSERT INTO #temp(c1,c2,c3)
--VALUES(2,'b','b4')
--
--INSERT INTO #temp(c1,c2,c3)
--VALUES(3,'c','d4')
--
--INSERT INTO #temp(c1,c2,c3)
--VALUES(3,'c','b5')
--
--INSERT INTO #temp(c1,c2,c3)
--VALUES(3,'c','v5')
--
--INSERT INTO #temp(c1,c2,c3)
--VALUES(4,'d','u7')
SELECT x.c1,
x.c2,
x.c3
FROM (SELECT c1,
c2,
c3,
row_number() OVER(PARTITION BY c1,c2 ORDER BY c3) AS rowNum
FROM #temp)x
WHERE x.rowNum = 1
June 7, 2011 at 7:24 am
Very nice. much cleaner than the temp table method...thx
Data Enthusiast | @SQLbyoBI | www.opifexsolutions.com
January 31, 2014 at 2:17 pm
Thank you too, you just saved me a whole rewrite of a program.
G
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