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Arithmomaniac
Yak Posting Veteran
66 Posts |
 Posted - 2008-07-18 : 15:34:48
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| If I had the join Customer C LEFT JOIN Transaction T on T.CustomerID = C.IDHow would I insert ROW_NUMBER() OVER(PARTITION BY C.ID ORDER BY T.ID) As a column into the join (meaning, not above the FROM clause)?---------Ignorance may be bliss, but knowledge is thrill. |
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rohitkumar
Constraint Violating Yak Guru
472 Posts |
Posted - 2008-07-18 : 15:45:37
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| what do you mean into the join? you want ROW_NUMBER() in the output of your table joins? |
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sodeep
Master Smack Fu Yak Hacker
7174 Posts |
Posted - 2008-07-18 : 15:51:23
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| Here is excellent article from Madhivanan:http://sqlblogcasts.com/blogs/madhivanan/archive/2007/08/27/multipurpose-row-number-function.aspx |
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Arithmomaniac
Yak Posting Veteran
66 Posts |
Posted - 2008-07-18 : 16:13:54
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| I don't want to say SELECT ROW_NUMBER[...] FROM C LEFT JOIN T [...] , because I want to use the ROW_NUMBER in a calculation to find the amount someone bought at their first transaction (meaning, where ROW_COUNT would equal 1, if you sorted by transaction date). It needs to be in the FROM statement, with the join.---------Ignorance may be bliss, but knowledge is thrill. |
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rohitkumar
Constraint Violating Yak Guru
472 Posts |
Posted - 2008-07-18 : 16:20:12
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| then use row_number in a sub query for whatever table you want |
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SwePeso
Patron Saint of Lost Yaks
30421 Posts |
Posted - 2008-07-19 : 01:25:08
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You can also use COUNT(*) OVER (PARTITION BY ...)But you probably already knew this because you have read Books Online.
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Inserting a ROW_NNUMBER column into a joi