Re: DB Query

Run an explain plan, but my first quess would be to add indexes to c1, c2, c3, c4, c5 fields. >>I'm trying to optimize a query that in the first example is taking too long >>to run. >> >>This is my existing working query: >>$sql = "SELECT count(*) as cnt, id FROM mYTable WHERE >>c1 not in (1,16,36) >>and c2 not in (1,16,36) and c3 not in (1,16,36) and c4 not in (1,16,36) and >>c5 not in (1,16,36) GROUP BY id"; >> >>Is it possible to do something like this instead (This doesn't work of >>course) >>$sql = "SELECT count(*) as cnt, id FROM myTable WHERE >>(c1,c2,c3,c4,c5) >>not in (1,16,36) GROUP BY id"; >> >>Any other suggestions are appreciated, >> >>Thanks! >> >> >>