Ingo Weiss schrieb:
Thanks, Sebastian!
I have tried this one before. The problem is that it finds all items the
tags of which include EITHER 'blue' OR 'red', not 'blue' AND 'red':
oh ... "and" ..., i missred
SELECT DISTINCT items.*
FROM items
INNER JOIN taggings
ON items.id = taggings.item_id
INNER JOIN tags
ON tags.id = taggings.tag_id
AND tags.name = 'blue'
AND tags.name = 'red';
or
SELECT DISTINCT items.*
COUNT(items.id)
FROM [your join above]
WHERE tags.name IN ('blue', 'red')
HAVING COUNT(items.id) = 2;
--
Sebastian Mendel
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