mysql - SQL查询给出错误结果

Question

当我运行以下查询时，它只显示 1 行。基于“created_date”条件，如果我删除“created_date”条件并仅保留“status_change_date”条件，它会显示 3 行。

我想查看在指定时间内创建或修改的所有项目。我找不到查询中的问题

`SELECT DISTINCT products.id AS product, status.id AS stat, COUNT(*) AS total FROM items 
      INNER JOIN products ON (items.fk_product_id = products.id) 
      INNER JOIN status ON (items.fk_status = status.id) 
      WHERE DATE(items.status_change_date) BETWEEN '2011-04-13' AND '2011-05-13' 
      OR DATE(items.created_date) BETWEEN '2011-04-13' AND '2011-05-13' 
      AND status.id = 2 
      GROUP BY products.name, status.name order by products.name`

Answer 1

我感觉条件正在被这样评估

status_change_date or (created_date and status.id = 2)

您可以尝试使用括号来指定您的条件分组

( DATE(items.status_change_date)... OR DATE(items.created_date)... )
    AND status.id = 2