From the table below, how would I select all animalIds that have a specific combination of attributeIds eg if I supplied attributeIds 455 & 685 I'd expect to get back animalIds 55 & 93
Table name: animalAttributes
id attributeId animalId
1 455 55
2 233 55
3 685 55
4 999 89
5 455 89
6 333 93
7 685 93
8 455 93
I have the following query that seems to work, however, I'm not sure if there is a more robust way?
SELECT animalId
FROM animalAttributes
WHERE attributeId IN (455,685)
GROUP BY animalId
HAVING COUNT(DISTINCT attributeId) = 2;
SELECT DISTINCT animalId
FROM animalAttributes
WHERE attributeId IN (455,685)
or
SELECT animalId
FROM animalAttributes
WHERE attributeId IN (455,685)
GROUP BY animalId
If you really want accurate results, you could go with a fool-proof method like this:
select distinct base.animalId
from animalAttributes base
join animalAttributes a on base.animalId = a.animalId
and a.attributeId = 455
where base.attributeId = 685
If you later needed 3 matching attributes, you could just add another join:
select distinct base.animalId
from animalAttributes base
join animalAttributes a on base.animalId = a.animalId
and a.attributeId = 455
join animalAttributes b on base.animalId = b.animalId
and b.attributeId = 999
where base.attributeId = 685
SELECT DISTINCT `animalId` FROM `animalAttributes` WHERE `attributeId` = 455
INTERSECT
SELECT DISTINCT `animalId` FROM `animalAttributes` WHERE `attributeId` = 685
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