我有三个名为users
的mysql表,'clients
'和'products
'。我想计算同一查询中每个表的'id'字段。可能吗?请帮我。提前致谢。
请这个声明
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