如何在INNER JOIN SELECT中使用主选择列

Question

SELECT author, excitement, d.*, dist.* FROM profiles as p
INNER JOIN (SELECT id, ABS( excitement - 3.91) as exc_diff from profiles) as d ON p.id = d.id
INNER JOIN (SELECT count(id) as exc_dist from profiles where ABS( excitement - 3.91) < d.exc_diff) as dist;

如何在INNER JOIN SELECT中使用主SELECT列（问题是d.exc_diff，比如说d.exc_diff未知列;）

Answer 1

试试这个：

SELECT author, excitement, d.*, 
(SELECT count(id) from profiles where ABS( excitement - 3.91) < d.exc_diff) as exc_dist
FROM profiles as p
INNER JOIN (SELECT id, ABS( excitement - 3.91) as exc_diff from profiles) as d ON p.id = d.id;