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SQL Server 2005
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SQL Server 2005 General Discussion
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What Do You Call This Relationship ?
What Do You Call This Relationship ?
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homebrew01
homebrew01
Posted Wednesday, February 20, 2013 11:49 AM
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Last Login: Today @ 8:12 AM
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I have a situation with items that are related, but not really in a heirarchy ... more like parent to parent. As shown below, all the ODD numbers are related to each other equally so that '1' is related to '11' via the other entries. ie, 5 is related to 1, and 11 is related to 5, therefore 11 is related to 1.
And all the EVEN numbers are related to each other equally, so that '12' is related to '2' because 12 is related to 10, 10 is related to 8, and 8 is related to 2.
I need to consolidate related rows into 1 summary row (selecting oldest & newest dates), and looking for examples on the InterWebz, but not sure what keywords I should be looking for to describe this kind of relationship.
Item_A Item_B
5 1
6 4
7 3
8 2
9 7
10 6
10 8
11 5
11 9
12 10
Post #1422233
mmartin1
mmartin1
Posted Thursday, May 16, 2013 3:37 PM
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Last Login: Friday, May 17, 2013 4:43 PM
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With the ODD numbers, how is 7,5,3 related. Did you miss 7 is related to five?
thanks
Post #1453800
Eugene Elutin
Eugene Elutin
Posted Friday, May 17, 2013 3:20 AM
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It's a tree or hierarchy, whatever you prefer.
I guess, you will need to use some sort of recursive CTE. Hard to say anything more based on provided limited details.
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