Laravel mysql如何在同一个查询中计算多个表的字段

Question

我有三个名为users的mysql表，＆＃39; clients＆＃39;和＆＃39; products＆＃39;。我想算上这个＆＃39; id＆＃39;同一查询中每个表的字段。可能吗？请帮我。 提前谢谢。

Answer 1

请发表声明

SELECT u.total_users, c.total_clients, p.total_products (
 SELECT COUNT(id) as total_users FROM users
) as u,
(
  SELECT COUNT(id) as total_clients FROM clients
) as c,
(
   SELECT COUNT(id) as total_products FROM products
) as p