On 7/9/2015 11:25 AM, Andy Rahn wrote: > I want to build an application that can search for specific documents based > on a lot of criteria from a user (e.g. matching keywords, text, etc...). > And then to combine these results using boolean logic ... For example, > keyword 'animal' AND rating > 3 > > Each document has an integer id. > > My strategy so far is to gather the id for each subquery into a temporary > table. Then I can combine the tables using UNION or INTERSECT keywords.
Why UNION or INTERSECT? Why not simply select id from documents where keyword='animal' and rating > 3; ? -- Igor Tandetnik
