SQL 查询 - 计算 SUM 大于当前记录的记录数

Question

I am writing a SQL query that SUMs the total sales by product, and I need a way to use the COUNT function to count the number of records whose SUM (totalsales) is greater than the current record.

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Here is what I have so far:

SELECT product_id, SUM(product_gross_revenue) AS TotalSales, t.name as Category

FROM {prefix}wc_order_product_lookup c

LEFT JOIN wp_posts p ON p.id = c.product_ID

LEFT JOIN wp_term_relationships AS tr ON tr.object_id = p.ID

JOIN wp_term_taxonomy AS tt ON tt.taxonomy = 'product_cat' AND tt.term_taxonomy_id = tr.term_taxonomy_id

JOIN wp_terms AS t ON t.term_id = tt.term_id

WHERE (t.name='Cat A' OR t.name='Cat B' OR t.name='Cat C' OR t.name='Cat D' OR t.name='Cat E')

GROUP BY product_id ORDER BY TotalSales DESC

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I would like to add a COUNT function to my select statement that counts the number of records where TotalSales is greater than the current record, but everything I've tried has failed.

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Example, my current table looks like this:

product_id	product_gross_revenue	name
1	50	Cat A
2	150	Cat B
3	100	Cat C
1	150	Cat A
3	200	Cat C

What I would like my desired output to be:

product_id	TotalSales	name	Count
1	200	Cat A	2
2	150	Cat B	3
3	300	Cat C	1

Answer 1

with data as (<your query minus order by>)
select *,
    (
      select count(*)
      from data d2
      where d2.TotalSales > d1.TotalSales 
    ) as X
from data d1
order by TotalSales desc