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Re^2: Most efficient record selection method?by Kraythorne (Sexton) |
on Feb 13, 2009 at 12:09 UTC ( [id://743591]=note: print w/replies, xml ) | Need Help?? |
Ok. Variants, = mixture of values contained in each field. Sample records = Live records containing these values I don't care about the combination, but we do need to have the minimum number of records so:
could be resolved in 3 records as you have said:
HOWEVER, if there are 2 records that contain:
Then these need to be identified and used in preference to the first combination as that will be the minimum number of records I need to represent all the variants in each of the fields. This gets more complicated as the number of fields and files being interrogated increases
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