在两个表上左连接并希望从特定日期获取结果

Question

I have written a MySQL query to do left join on two tables.

My result query is showing the result I wanted. I just want to know how to further make it limited to specific dates.

The column which I want to sort is user_registered and is showing date in this format 2020-12-17 06:06:05. So how to make it from two different dates. This is my query which I have written down.

SELECT wp_users.user_email,user_nicename,user_registered,freelancerpaid
FROM wp_users
LEFT JOIN wp_posts
ON wp_users.ID = wp_posts.post_author
WHERE wp_posts.post_type="freelancers"
AND wp_users.freelancerpaid="1"

These are the results i am getting from the query So what I want is to get results from the specific dates I can enter.

Thanks in advance.

Answer 1

Stop , your query is not doing what you want.

It is not doing Left join but it is doing inner join .

If you really want the left join then condition on left joined table must be in the ON clause and where condition on wp_users can go in where clause as follows:

SELECT wp_users.user_email,user_nicename,user_registered,freelancerpaid
  FROM wp_users
  LEFT JOIN wp_posts ON wp_users.ID = wp_posts.post_author
                    And wp_posts.post_type="freelancers" -- this is moved to ON clause
 Where wp_users.freelancerpaid="1"
   And DATE(wp_users.user_registered) BETWEEN '2020-11-28' AND '2020-11-29'

Answer 2

If you neet to get Between two dates , use this.

SELECT wp_users.user_email,user_nicename,user_registered,freelancerpaid
FROM wp_users
LEFT JOIN wp_posts
ON wp_users.ID = wp_posts.post_author
WHERE wp_posts.post_type="freelancers"
AND wp_users.freelancerpaid="1"
AND DATE(user_registered) BETWEEN '2020-11-28' AND '2020-11-29'

But if you neet to get lesser or greater than the date , use this. Just change the condition base on what you need.

SELECT wp_users.user_email,user_nicename,user_registered,freelancerpaid
FROM wp_users
LEFT JOIN wp_posts
ON wp_users.ID = wp_posts.post_author
WHERE wp_posts.post_type="freelancers"
AND wp_users.freelancerpaid="1"
AND DATE(user_registered) >= '2020-11-29'