> On 27 Jun 2015, at 5:59, Robert Nikander <rob.nikander@xxxxxxxxx> wrote:
> In application code, prepared statements want to say: `select * from items where color_id = ?` and that `?` might be a int or null, so that doesn’t work.
You could add another parameter to test which expression to 'activate' in the query, something like:
select * from items where ('notnull' = ? and color_id = ?) or ('null' = ? and color_id is null);
Of course, with those _positional_ query parameters that means you need to add the same value TWICE into the query. You wouldn't need to with _named_ query parameters, if those are available to you.
Alban Hertroys
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If you can't see the forest for the trees,
cut the trees and you'll find there is no forest.
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