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Find duplicates in MySQL SELECT col1, …

Find duplicates in MySQL

SELECT col1, col2, count(col3)
FROM t1
GROUP BY col1, col2
HAVING count(col3) > 1

Adapted from
http://support.microsoft.com/default.aspx?scid=kb;en-us;139444

By microbe

Like to cook for microorganisms and human. Play football, tennis, and baseball.