Question

表结构：

客户：

customer_id, first_name, last_name, street, unit, building, city, state, zip, phone, email

work_requests：

work_requests_id, customer_id, work_type, description, request_time, completed

我有一个使用此查询显示工作请求的php页面：

SELECT * FROM customers，work_requests WHERE customers.customer_id = work_requests.customer_id ORDER BY work_requests_id DESC LIMIT $ startrow，10“

在work_requests表中，'completed'的值为0 or 1。 0 = work not done yet和1 = work has been done。我只想显示已完成的工作请求的值为0（即工作尚未完成）。我怎么做？仅供参考，$startrow与分页有关。

Answer 1

为什么不添加另一个条件？

SELECT   *
FROM     customers, work_requests 
WHERE    customers.customer_id = work_requests.customer_id 
AND      work_requests.completed = 0
ORDER BY work_requests_id DESC 
LIMIT    $startrow, 10

Answer 2

因为您没有显示显示这些项目的代码，我认为您的意思是您只想选择已完成的值为0的工作请求

SELECT * 
FROM customers, work_requests 
WHERE customers.customer_id = work_requests.customer_id 
    AND work_requests.completed=0 # add this condition
ORDER BY work_requests_id DESC 
LIMIT $startrow, 10

Answer 3

您可以尝试：

SELECT * 
FROM customers, work_requests 
WHERE customers.customer_id = work_requests.customer_id AND work_requests.completed=0
ORDER BY work_requests_id DESC LIMIT $startrow, 10

Answer 4

感谢所有人。额外的AND条件有效。我实际上已经尝试过，但是当我测试时它没有用，我急忙还没有将“已完成”的列添加到表中。再次感谢。

2表查询仅显示某些行

表结构：

4 个答案: