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!
