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Compare rows in tables


Compare rows in tables

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demin99
demin99
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Group: General Forum Members
Points: 57 Visits: 506
Hi,

I need to compare concecutive records in a single table and find the difference of 1 column .

Iam grouping with rownumber ,but how do I compare the row 2 with row 1
row3 with row2 and get the difference.


Thanks for your help.

Demin
Nick_UK
Nick_UK
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Group: General Forum Members
Points: 1492 Visits: 1200
Hi,
if you have the row number for the table already you could join this table in on itself as below allow you to join one row to the next


SELECT table1.column1,
table2.column2
FROM Sampletable as table 1
LEFT OUTER JOIN Sampletable as table2
ON table1.rownumber+1 = table2.rownumber


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