PHP / MYSQL比较本月和上个月的日期

Question

我正在研究报告模块。 我一直在比较某些代理商的本周和上周报告。

本周报告查询如下

SELECT COUNT(created_at) AS cust_count_new, agency_id, created_at FROM customers WHERE 
(customers.created_at >= DATE(NOW()) - INTERVAL 6 DAY AND customers.created_at
< DATE(NOW()) + INTERVAL 1 DAY

上周报告查询如下

SELECT COUNT(created_at) AS cust_count_old, agency_id, created_at FROM customers WHERE 
(customers.created_at >= DATE(NOW()) - INTERVAL 13 DAY AND customers.created_at 
< DATE(NOW()) - INTERVAL 6 DAY

我正在做的是比较这周和上周的报告。 现在如何将查询更改为本月和上个月（30天）。 我有点困惑，所以可以提供任何帮助。

Answer 1

您可以在INTERVAL中将MONTH用作单位。 另外，您可以使用CURDATE()而不是DATE(NOW())来获取当前日期。

本月报表查询将是：

SELECT COUNT(created_at) AS cust_count_new, 
       agency_id, 
       created_at 
FROM customers 
WHERE customers.created_at >= CURDATE() - INTERVAL 1 MONTH AND 
customers.created_at < CURDATE() + INTERVAL 1 DAY

上个月报表查询如下

SELECT COUNT(created_at) AS cust_count_new, 
       agency_id, 
       created_at 
FROM customers 
WHERE customers.created_at >= CURDATE() - INTERVAL 2 MONTH AND 
customers.created_at < (CURDATE() - INTERVAL 1 MONTH) + INTERVAL 1 DAY