Closed qichhhhh closed 3 months ago
SELECT a.*, v.sealSum FROM A a LEFT JOIN ( SELECT aa.id AS aaId, COUNT(b.id) AS sealSum FROM A aa LEFT JOIN B b ON aa.id = b.business_id GROUP BY aa.id ) v ON a.id = v.aaId
好像 LEFT JOIN 方法中没有办法生成临时表?
不支持
好像 LEFT JOIN 方法中没有办法生成临时表?