Counting one table of records for matching records of another table

自古美人都是妖i 提交于 2019-12-06 13:51:15
SELECT  r.*, COUNT(v.record_id)
FROM    records r
LEFT JOIN
        views v
ON      v.record_id = r.record_id
WHERE   r.keyword = 'stack'
GROUP BY
        r.record_id

Create the following indexes:

records (keyword, record_id)
views (record_id)

for this to work fast.

select `record_id`, `keyword`, count(*) as `total_views`
       from `views` join `records` using (`record_id`)
       where `keyword`='stack'
       group by `record_id`
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