Comments on: How to find contiguous ranges with SQL http://www.xaprb.com/blog/2006/03/22/find-contiguous-ranges-with-sql/ Stay curious! Sat, 30 Aug 2008 05:05:07 +0000 http://wordpress.org/?v=2.2.2 By: Nonie http://www.xaprb.com/blog/2006/03/22/find-contiguous-ranges-with-sql/#comment-14763 Nonie Tue, 17 Jun 2008 20:14:20 +0000 http://www.xaprb.com/blog/2006/03/22/find-contiguous-ranges-with-sql/#comment-14763 How do I query to indicate missing sequence numbers with an "*", (like the banks to on your bank statement when a check number is missing). For example: 1 2 3 6* 7 8 10* 11 12 15* How do I query to indicate missing sequence numbers with an “*”, (like the banks to on your bank statement when a check number is missing).

For example:

1
2
3
6*
7
8
10*
11
12
15*

]]> By: Kyle http://www.xaprb.com/blog/2006/03/22/find-contiguous-ranges-with-sql/#comment-14517 Kyle Tue, 06 May 2008 00:19:57 +0000 http://www.xaprb.com/blog/2006/03/22/find-contiguous-ranges-with-sql/#comment-14517 This is pretty sweet! I have a question though... How would one restrict this query to an id range? For example if you only wanted to find only the ranges between 3 and 12. Further if you wanted to restrict it on other (non id) factors? (My data set is more like the numbers 1 to 20 set to true, with the numbers 5, 11, 12, 13, and 14 set to false or missing and I only want the ranges between 3 and 12 of the true ids) This has given me a great start, thanks! This is pretty sweet!
I have a question though… How would one restrict this query to an id range?

For example if you only wanted to find only the ranges between 3 and 12. Further if you wanted to restrict it on other (non id) factors?

(My data set is more like the numbers 1 to 20 set to true, with the numbers 5, 11, 12, 13, and 14 set to false or missing and I only want the ranges between 3 and 12 of the true ids)

This has given me a great start, thanks!

]]> By: Dragoljub Ćurčić http://www.xaprb.com/blog/2006/03/22/find-contiguous-ranges-with-sql/#comment-14247 Dragoljub Ćurčić Mon, 25 Feb 2008 16:50:13 +0000 http://www.xaprb.com/blog/2006/03/22/find-contiguous-ranges-with-sql/#comment-14247 Thanks for a great article. You've helped me a lot! Thanks for a great article. You’ve helped me a lot!

]]> By: SteveW http://www.xaprb.com/blog/2006/03/22/find-contiguous-ranges-with-sql/#comment-13710 SteveW Mon, 26 Nov 2007 20:18:45 +0000 http://www.xaprb.com/blog/2006/03/22/find-contiguous-ranges-with-sql/#comment-13710 That's a beautiful thing, man. Very nicely done. Thanks for publishing it!! That’s a beautiful thing, man. Very nicely done. Thanks for publishing it!!

]]> By: oumar http://www.xaprb.com/blog/2006/03/22/find-contiguous-ranges-with-sql/#comment-13345 oumar Tue, 28 Aug 2007 21:41:57 +0000 http://www.xaprb.com/blog/2006/03/22/find-contiguous-ranges-with-sql/#comment-13345 Any thoughts on how to write a SQL query that works with address ranges? I have a scenario where I need to find overlapping or gaps between ranges of addresses for a given street. For instance I have SegmentID Street_name Left_from addr left_to_addr 1 Main 10 99 2 Main 10 199 There is an overlap of addresses in the table above since the Main1 address range is inculded in Main2 address range. I would greatly appreciate your help here as I desperately need a way out of this. Thank you. Any thoughts on how to write a SQL query that works with address ranges? I have a scenario where I need to find overlapping or gaps between ranges of addresses for a given street. For instance I have

SegmentID Street_name Left_from addr left_to_addr

1 Main 10 99
2 Main 10 199

There is an overlap of addresses in the table above since the Main1 address range is inculded in Main2 address range.

I would greatly appreciate your help here as I desperately need a way out of this. Thank you.

]]> By: DrDebian http://www.xaprb.com/blog/2006/03/22/find-contiguous-ranges-with-sql/#comment-13308 DrDebian Tue, 14 Aug 2007 19:04:38 +0000 http://www.xaprb.com/blog/2006/03/22/find-contiguous-ranges-with-sql/#comment-13308 Shouldn't it be "a.id = b.id 1" instead of "a.id = b.id - 1" in the full statement? Shouldn’t it be “a.id = b.id 1″ instead of “a.id = b.id - 1″ in the full statement?

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