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 Posted Friday, June 28, 2013 6:28 AM
 SSCommitted Group: General Forum Members Last Login: Tuesday, October 4, 2016 1:47 PM Points: 1,967, Visits: 953
 Christian Buettner-167247 (6/28/2013)Love the question :) Didn't know I was working with a sick whale:SELECT DIFFERENCE('Sql','sickwhale')omg. This made my day! Thank you. When I get home tonight, I'm letting my kids know that I became a marine biologist. I'll let them decide whether that's a promotion or lateral move...
Post #1468526
 Posted Friday, June 28, 2013 6:37 AM
 Ten Centuries Group: General Forum Members Last Login: Wednesday, May 25, 2016 11:36 AM Points: 1,045, Visits: 996
 It doesn't strike me as a particularly useful function, especially given these examples:`SELECT SOUNDEX('cent') --C530SELECT SOUNDEX('scent') --S253SELECT DIFFERENCE('cent','scent') --2, a very weak matchSELECT SOUNDEX('through') --T620SELECT SOUNDEX('threw') --T600SELECT DIFFERENCE('through','threw') --3, a fair match--an attempt at regional diplomacy?SELECT SOUNDEX('route') --R300SELECT SOUNDEX('root') --R300SELECT SOUNDEX('rout') --R300SELECT DIFFERENCE('root','rout') --4, a perfect matchSELECT DIFFERENCE('root','route') --4, a perfect matchSELECT DIFFERENCE('rout','route') --4, a perfect match--let's see if the US and Canada can put this to rest once and for all:SELECT SOUNDEX('about') --A130SELECT SOUNDEX('aboot') --A130SELECT SOUNDEX('abowt') --A130SELECT SOUNDEX('abeet') --A130--all of these will DIFFERENCE with a result of 4, of course`So that seems pretty useless.ron -----a haiku...NULL is not zeroNULL is not an empty stringNULL is the unknown
Post #1468528
 Posted Friday, June 28, 2013 7:46 AM
 SSCertifiable Group: General Forum Members Last Login: Wednesday, November 16, 2016 9:57 AM Points: 6,147, Visits: 13,680
 nice question ---------------------------------------------------------------------
Post #1468551
 Posted Friday, June 28, 2013 8:16 AM
 SSC Journeyman Group: General Forum Members Last Login: Friday, August 16, 2013 11:37 AM Points: 97, Visits: 309
 Got mixed up in my order on the answer. Love the question. Seems like something I would never get to use but I could see a time and place in the future (moving into education database) that I might be able to get a couple of uses out of this.
Post #1468570
 Posted Friday, June 28, 2013 8:23 AM
 SSCrazy Eights Group: General Forum Members Last Login: 2 days ago @ 7:14 PM Points: 8,200, Visits: 17,740
 ronmoses (6/28/2013)It doesn't strike me as a particularly useful function, especially given these examples:`...`So that seems pretty useless.ron+1 Luis C.General Disclaimer:Are you seriously taking the advice and code from someone from the internet without testing it? Do you at least understand it? Or can it easily kill your server?How to post data/code on a forum to get the best help: Option 1 / Option 2
Post #1468576
 Posted Friday, June 28, 2013 9:03 AM
 SSC-Addicted Group: General Forum Members Last Login: Thursday, December 1, 2016 9:13 AM Points: 496, Visits: 951
 While I wouldn't trust the results without checking them by eye (or expect all cases to be found) DIFFERENCE can be used as a quick and dirty way of identifying a short list of possible duplicate records.`SELECT P1.*, P2.*FROM People AS P1INNER JOIN People AS P2 ON P1.Date_of_Birth = P2.Date_of_Birth AND P1.Last_Name = P2.Last_NameWHERE P1.Person_ID <> P2.Person_IDAND DIFFERENCE(P1.First_Name,P2.First_Name) = 4`Fuzzy grouping through SSIS is a lot more sophisticated but the above query (or variants swapping first and last name) will give a quick idea of what you're facing very quickly.
Post #1468583
 Posted Friday, June 28, 2013 9:05 AM
 Ten Centuries Group: General Forum Members Last Login: Wednesday, May 25, 2016 11:36 AM Points: 1,045, Visits: 996
 BarneyL (6/28/2013)While I wouldn't trust the results without checking them by eye (or expect all cases to be found) DIFFERENCE can be used as a quick and dirty way of identifying a short list of possible duplicate records.I actually had to script something with a similar objective quite recently, and it didn't even occur to me to use this approach. I think I'll revisit that, thanks!ron -----a haiku...NULL is not zeroNULL is not an empty stringNULL is the unknown
Post #1468584
 Posted Friday, June 28, 2013 10:03 AM
 SSCommitted Group: General Forum Members Last Login: 2 days ago @ 11:52 AM Points: 1,733, Visits: 3,353
 Thanks Ron, awesome question. ----------------------------------------------------------------------------Sacramento SQL Server users group - http://sac.sqlpass.orgFollow me on Twitter - @SQLDCH----------------------------------------------------------------------------Yeah, well...The Dude abides.
Post #1468611
 Posted Friday, June 28, 2013 12:47 PM
 SSCrazy Group: General Forum Members Last Login: Tuesday, March 8, 2016 10:23 AM Points: 2,144, Visits: 613
 nice question..Thanks..
Post #1468681
 Posted Friday, June 28, 2013 12:57 PM
 SSCrazy Group: General Forum Members Last Login: 2 days ago @ 1:42 PM Points: 2,940, Visits: 3,702
 Thanks - really cool question.- webrunner -------------------"I love spending twice as long and working twice as hard to get half as much done!" – Nobody ever.Ref.: http://www.adminarsenal.com/admin-arsenal-blog/powershell-how-to-write-your-first-powershell-script"Operator! Give me the number for 911!" - Homer Simpson"A SQL query walks into a bar and sees two tables. He walks up to them and says 'Can I join you?'"Ref.: http://tkyte.blogspot.com/2009/02/sql-joke.html
Post #1468684

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