Oracle/SQL - Split list into 3 segments

StackOverflow https://stackoverflow.com/questions/6346099

  •  27-10-2019
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Question

I'm wondering how I would go about writing a query to split a table into 3 segments. When I've had to split a table into 2 before I've always based it off the rownum and doing a mod on it. I know I could again use rownum and select based on ranges, but if the list varies in record count each time the queries are run they will have to be updated.

Any thoughts?

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Solution

Why can't you continue to use MOD, as in MOD(rownum, 3) = 0, 1 or 2? If it worked for 2, why not 3?

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