Comments on: How to find duplicate rows with SQL http://www.xaprb.com/blog/2006/10/09/how-to-find-duplicate-rows-with-sql/ Stay curious! Fri, 08 Aug 2008 18:41:18 +0000 http://wordpress.org/?v=2.2.2 By: Bebop http://www.xaprb.com/blog/2006/10/09/how-to-find-duplicate-rows-with-sql/#comment-14352 Bebop Thu, 27 Mar 2008 11:03:16 +0000 http://www.xaprb.com/blog/2006/10/09/how-to-find-duplicate-rows-with-sql/#comment-14352 Does anyone want to help me? I'm new to SQL, an absolute beginner. I can do what I want to do in basic, but can't access the databases that way! Anyway, I want to isolate the dublicates across two tables. The entries all have a unique ID, but I need a combination of the two to get what I need (All transactions, I need both ins and outs if you will!) Whatever it is I've done, every transaction is repeating 16 times (Why 16? - I have no idea either!) So if anyone reading this knows how to do the above but across two tables, please let me know and I'll be your friend for life! Does anyone want to help me?

I’m new to SQL, an absolute beginner. I can do what I want to do in basic, but can’t access the databases that way!

Anyway, I want to isolate the dublicates across two tables.
The entries all have a unique ID, but I need a combination of the two to get what I need (All transactions, I need both ins and outs if you will!) Whatever it is I’ve done, every transaction is repeating 16 times (Why 16? - I have no idea either!) So if anyone reading this knows how to do the above but across two tables, please let me know and I’ll be your friend for life!

]]> By: Donovan http://www.xaprb.com/blog/2006/10/09/how-to-find-duplicate-rows-with-sql/#comment-13684 Donovan Fri, 16 Nov 2007 00:14:39 +0000 http://www.xaprb.com/blog/2006/10/09/how-to-find-duplicate-rows-with-sql/#comment-13684 A helpful way to get the index without too much trouble is to use MAX()... select max(article_id) from articles group by headline HAVING count(*) > 1 A helpful way to get the index without too much trouble is to use MAX()…

select max(article_id) from articles group by headline HAVING count(*) > 1

]]> By: moon http://www.xaprb.com/blog/2006/10/09/how-to-find-duplicate-rows-with-sql/#comment-13561 moon Mon, 22 Oct 2007 06:51:17 +0000 http://www.xaprb.com/blog/2006/10/09/how-to-find-duplicate-rows-with-sql/#comment-13561 Xaprb.............thanks 4 the reply....... can u give an example .......... thanks Xaprb………….thanks 4 the reply…….

can u give an example ……….

thanks

]]> By: Xaprb http://www.xaprb.com/blog/2006/10/09/how-to-find-duplicate-rows-with-sql/#comment-13542 Xaprb Thu, 18 Oct 2007 10:23:30 +0000 http://www.xaprb.com/blog/2006/10/09/how-to-find-duplicate-rows-with-sql/#comment-13542 A WHERE clause should fix that. Remember <a href="http://www.xaprb.com/blog/2006/05/18/why-null-never-compares-false-to-anything-in-sql/" rel="nofollow">col = NULL is always false</a>. A WHERE clause should fix that. Remember col = NULL is always false.

]]> By: Moon http://www.xaprb.com/blog/2006/10/09/how-to-find-duplicate-rows-with-sql/#comment-13541 Moon Thu, 18 Oct 2007 03:49:55 +0000 http://www.xaprb.com/blog/2006/10/09/how-to-find-duplicate-rows-with-sql/#comment-13541 Thanks its a great article........ i used this query " select b, c, count(*) from a_b_c group by b, c having count(1) or count(1); " it worked well but my the problem is that its also showing the null values too as duplicates ..... IS there any way to avoide this.......? thanks Thanks its a great article……..

i used this query

” select b, c, count(*) from a_b_c group by b, c having count(1) or count(1); “

it worked well

but my the problem is that its also showing the null values too as duplicates ….. IS there any way to avoide this…….?

thanks

]]> By: Nancy http://www.xaprb.com/blog/2006/10/09/how-to-find-duplicate-rows-with-sql/#comment-13457 Nancy Fri, 05 Oct 2007 14:36:23 +0000 http://www.xaprb.com/blog/2006/10/09/how-to-find-duplicate-rows-with-sql/#comment-13457 I have 1 table I need to find all duplicates from 3 columns (address1 city state) so I created a view and concatenated those 3 columns into 1 new called address3. Each time I run a simple select distinct address3 query, I get a different result. Is there a better way to find and delete these duplicates? Thank you. I have 1 table I need to find all duplicates from 3 columns (address1 city state) so I created a view and concatenated those 3 columns into 1 new called address3. Each time I run a simple select distinct address3 query, I get a different result. Is there a better way to find and delete these duplicates? Thank you.

]]> By: nan http://www.xaprb.com/blog/2006/10/09/how-to-find-duplicate-rows-with-sql/#comment-13420 nan Tue, 25 Sep 2007 06:16:00 +0000 http://www.xaprb.com/blog/2006/10/09/how-to-find-duplicate-rows-with-sql/#comment-13420 I am still confused . My table is like this .... IdNo CustId CustDesc 1 C1 Customer1 2 C1 Customer1 3 C1 Customer1 4 C2 Customer2 5 C2 Customer2 6 C2 Customer2 2 C2 Customer2 3 C3 CuStomer3 7 C3 Customer3 In the above example given I would like to see all the IdNos with different customers. My result will be IdNo's 2 and 3. Thanks I am still confused . My table is like this ….

IdNo CustId CustDesc
1 C1 Customer1
2 C1 Customer1
3 C1 Customer1
4 C2 Customer2
5 C2 Customer2
6 C2 Customer2
2 C2 Customer2
3 C3 CuStomer3
7 C3 Customer3

In the above example given I would like to see all the IdNos with different customers. My result will be IdNo’s 2 and 3. Thanks

]]> By: smith http://www.xaprb.com/blog/2006/10/09/how-to-find-duplicate-rows-with-sql/#comment-13419 smith Mon, 24 Sep 2007 11:25:31 +0000 http://www.xaprb.com/blog/2006/10/09/how-to-find-duplicate-rows-with-sql/#comment-13419 Hi all sql guru, please help me with the following: Based from the data below, I need to get all the LAST transaction per compound keys(SPID NPA NXX Line) and status != 'Delete' Date SPID NPA NXX Line Status 9-23-2007 08088 204 987 9531 Delete 9-23-2007 08088 204 987 9532 Input 9-23-2007 08088 204 987 9533 Delete 9-23-2007 08088 204 987 9533 Add 9-23-2007 08089 204 977 2954 Add 9-23-2007 08089 204 977 2954 Delete 9-23-2007 08089 204 977 2954 Add 9-23-2007 08090 204 977 2956 Add 9-23-2007 08090 204 977 2956 Delete Target Result: 9-23-2007 08088 204 987 9532 Input 9-23-2007 08088 204 987 9533 Add 9-23-2007 08089 204 977 2954 Add Hi all sql guru, please help me with the following:

Based from the data below, I need to get all the LAST transaction per compound keys(SPID NPA NXX Line) and status != ‘Delete’

Date SPID NPA NXX Line Status
9-23-2007 08088 204 987 9531 Delete
9-23-2007 08088 204 987 9532 Input
9-23-2007 08088 204 987 9533 Delete
9-23-2007 08088 204 987 9533 Add
9-23-2007 08089 204 977 2954 Add
9-23-2007 08089 204 977 2954 Delete
9-23-2007 08089 204 977 2954 Add
9-23-2007 08090 204 977 2956 Add
9-23-2007 08090 204 977 2956 Delete

Target Result:
9-23-2007 08088 204 987 9532 Input
9-23-2007 08088 204 987 9533 Add
9-23-2007 08089 204 977 2954 Add

]]> By: Xaprb http://www.xaprb.com/blog/2006/10/09/how-to-find-duplicate-rows-with-sql/#comment-13418 Xaprb Sat, 22 Sep 2007 11:50:28 +0000 http://www.xaprb.com/blog/2006/10/09/how-to-find-duplicate-rows-with-sql/#comment-13418 Looks like you found the right place! It's all on this page. Looks like you found the right place! It’s all on this page.

]]> By: nan http://www.xaprb.com/blog/2006/10/09/how-to-find-duplicate-rows-with-sql/#comment-13417 nan Sat, 22 Sep 2007 05:50:11 +0000 http://www.xaprb.com/blog/2006/10/09/how-to-find-duplicate-rows-with-sql/#comment-13417 Hi, I foound this is a very nice site for sql. I have a small query. In my table there are three fields CustNo, IdNo, Cust Desc. There can be any number IdNo for the CustNo. But the IdNo assigned to one customer can not be assigned to another. Now which is the best query to check if there are any IdNo common to more than one customer. Here CustNo can be repreated and IdNo Can be also be repeated any number of times in the table.. Thanks.. Hi, I foound this is a very nice site for sql. I have a small query. In my table there are three fields CustNo, IdNo, Cust Desc. There can be any number IdNo for the CustNo. But the IdNo assigned to one customer can not be assigned to another. Now which is the best query to check if there are any IdNo common to more than one customer. Here CustNo can be repreated and IdNo Can be also be repeated any number of times in the table.. Thanks..

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