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 Posted Friday, June 28, 2013 6:28 AM
 SSCommitted Group: General Forum Members Last Login: Tuesday, December 03, 2013 8:50 AM Points: 1,732, Visits: 872
 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
 Right there with Babe Group: General Forum Members Last Login: Thursday, December 05, 2013 8:34 AM Points: 744, Visits: 786
 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: Today @ 12:20 PM Points: 5,540, Visits: 11,838
 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
 SSCommitted Group: General Forum Members Last Login: Today @ 3:46 PM Points: 1,872, Visits: 4,130
 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.Please don't trust me, test the solutions I give you before using them.Forum Etiquette: How to post data/code on a forum to get the best help
Post #1468576
 Posted Friday, June 28, 2013 9:03 AM
 Old Hand Group: General Forum Members Last Login: 2 days ago @ 8:43 AM Points: 345, Visits: 673
 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
 Right there with Babe Group: General Forum Members Last Login: Thursday, December 05, 2013 8:34 AM Points: 744, Visits: 786
 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
 Ten Centuries Group: General Forum Members Last Login: 2 days ago @ 4:32 PM Points: 1,088, Visits: 2,539
 Thanks Ron, awesome question. ----------------------------------------------------------------------------My LinkedIn profile - LinkedInSacramento SQL Server users group - http://sac.sqlpass.orgMy blog - http://www.expressnetsolutions.com/sqldchFollow me on Twitter - @SQLDCH----------------------------------------------------------------------------Yeah, well...The Dude abides.
Post #1468611
 Posted Friday, June 28, 2013 12:47 PM
 SSCommitted Group: General Forum Members Last Login: 2 days ago @ 3:03 PM Points: 1,502, Visits: 489
 nice question..Thanks..
Post #1468681
 Posted Friday, June 28, 2013 12:57 PM
 SSCrazy Group: General Forum Members Last Login: 2 days ago @ 1:08 PM Points: 2,218, Visits: 2,410
 Thanks - really cool question.- webrunner -------------------"The chemistry must be respected." - Walter White"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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