How to select entries from this relationship?

Question

I have these four tables: feeds, feed_entries, entries_categorias and categorias. Whith these structures:

CREATE TABLE `categorias` (
  `id` int(11) NOT NULL aut         


        

Answer 1

Try something like this:

SELECT * 
FROM `feed_entries`
WHERE id IN (
    SELECT e.id
    FROM `feed_entries` AS `e` 
    INNER JOIN `feeds` AS `f` ON e.feed_id =f.id 
    INNER JOIN `entries_categorias` AS `ec` 
    ON ec.entry_id =e.id INNER JOIN `categorias` AS `c` 
    ON ec.categoria_id =c.id 
    WHERE c.nome IN ('Google','Apple') 
    AND (e.deleted =0)
    GROUP BY e.id
    HAVING COUNT(DISTINCT ec.id) = 2
) 

Answer 2

Change your WHERE clause to use an IN operator:

SELECT `e`.* 
FROM `feed_entries` AS `e` 
INNER JOIN `feeds` AS `f` ON e.feed_id =f.id 
INNER JOIN `entries_categorias` AS `ec` ON ec.entry_id =e.id 
INNER JOIN `categorias` AS `c` ON ec.categoria_id =c.id
WHERE (c.nome IN (<List of categories separated by commas>) AND (e.deleted =0) 
ORDER BY `e`.`date` DESC