Single Column Multiple Filter In Mysql Intersection

Question

Here is a table

CarID| Attribute    | Value
1   | Color     | Red
2   | Color     | Blue 
3   | Color     | Red 
1   | Type      | Coupe 
2   | Type      | Hatch Back 
3   | Type      | Coupe
3   | Make      | Honda
2   | Make      | Toyota
1   | Make      | Ford

Now I would like to run a filter Like Select * From Cars WHERE (Attribute = Color AND Value = Red) AND (Attribute = Make AND Value = Honda).... and Hope to get the CarID as 3 !

This is simple case of Intersection of 2 queries but I don't know how to get it done in a single query.

Any help appriciated.

Answer 1

select
      carid,
      count(*) matchedItems
   from
      YourTable
   where
        ( Attribute = 'Color' and Value = 'Red' )
     OR ( Attribute = 'Make' and Value = 'Honda' )
   group by 
      carid 
   having
      matchedItems = 2;

you may have to change the having to...

 having count(*) = 2

Answer 2

The most straightforward solution would be to simulate a separate table for each attribute with sub queries (although it might not be the most efficient):

SELECT Colors.CarID FROM
    ( SELECT CarID, Value FROM Cars WHERE Attribute = 'Color' ) Colors,
    ( SELECT CarID, Value FROM Cars WHERE Attribute = 'Make' ) Makes
    WHERE Colors.CarID = Makes.CarID AND Colors.Value = 'Red' AND
        Makes.Value = 'Honda';

Answer 3

Here is another variant of the query

SELECT carid
FROM AnotherUnknownTableName t INNER JOIN  
     AnotherUnknownTableName t2 ON t.carid = t2.carid AND 
                                   t.Attribute = 'Color' AND 
                                   t2.Attribute = 'Make'
WHERE 
     t.Value = 'Red' AND t2.Value = 'Honda'

Having an index on (carid, Attribute) will do wonders.