I think you'll need to loop through the array with find('count').
On Mon, Jan 26, 2009 at 8:35 AM, Martin Westin
<[email protected]> wrote:
>
> Hi,
> I am in need of an unusual query that I find it hard to search for on
> Google or MySQL.com since all the terms I think of are very common
> ones. Hopefully someone reading this can guide me in the right
> direction.
>
> I have a series of values in an array. I can find out which records
> have matching values by passing this array as a condition to get a
> "WHERE somefield IN (value1,value2)" clause.
>
> I can also find which records have non-matching fields by using a
> "WHERE NOT(...)" clause. Finding the "orphans" in the database so to
> speak.
>
> Of-course I want something else. I want to find out which values in my
> array do not match a record in the database. Finding the orphans in my
> array so to speak. I have not figured out how to do this without using
> the IN clause and then comparing the results. Since this is
> "expensive" (looping arrays take time) I really wanted to find an SQL-
> way that would be less expensive.
>
> "SELECT VALUES IN MY ARRAY THAT DO NOT FIND ANY MATCHING RECORD" -
> sort of.
>
> Any guidance would be appreciated
> /Martin
> >
>
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