Sequelize with join, group by, having, order by

问题

How this query can be written using ORM?

SELECT p.id, 
    p.name, 
    COUNT(c.id) counter 
FROM Posts p 
LEFT JOIN Comments c 
    ON c.post_id = p.id 
WHERE p.rating > 100 
GROUP BY p.id
HAVING counter > 10
ORDER BY counter DESC 
LIMIT 5

回答1:

Try this:

Post.findAll({
  where: {rating: {gt: 100}},
  include: [Comments],
  having: ['COUNT(?) >= ?', '`comment`.`id`', 10]
})

Read my research by this question.

i use sequelize@2.0.0-dev9

回答2:

Since there is aggregated column counter in your query I think there is no standard ORM method to fetch entities by this query. But Sequelize provide the way to run raw SQL expression and parse results in any model you need. Or even deeper you can parse response yourself creating as complex result as you need.

Here is related docs for this case: http://docs.sequelizejs.com/manual/tutorial/raw-queries.html

来源：https://stackoverflow.com/questions/21057302/sequelize-with-join-group-by-having-order-by