Re: selecting distinct records with group max value
I do not know why putting the IF(...) clause in the WHERE clause gives different results.
By the first query needing an EXPLAIN I mean
SELECT
fld1, fld2, fld3, val
WHERE IF( fld1 = @prev, 0, @prev := fld1 ) > 0
FROM tbl
ORDER BY ...
PB
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Re: selecting distinct records with group max value
May 18, 2006 07:15AM
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