[英]How to optimize query in sql without using UNION
我的查詢為:
SELECT i.id AS id
FROM table_a i
WHERE (i.cat_id IN (92, 224))
GROUP BY id
HAVING (COUNT(i.cat_id) = 2 AND SUM(i.cat_id) = 316)
UNION
(
SELECT i.id AS id
FROM table_a i
WHERE (i.cat_id IN (92, 227))
GROUP BY id
HAVING (COUNT(i.cat_id) = 2 AND SUM(i.cat_id) = 319)
)
如何優化此查詢?
SELECT i.id AS id
FROM table_a i
WHERE (i.cat_id IN (92, 224) OR i.cat_id IN (92, 227))
GROUP BY id
HAVING (COUNT(i.cat_id) = 2
AND (SUM(i.cat_id) = 316 OR SUM(i.cat_id) = 319 )
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