PHP和MySQL之间的查询日期时间戳

Question

I am attempting to query for a record. The date is stored as a date time stamp and my query looks like this:

SELECT    count(c.id) as totalOrders
FROM      Cart c
WHERE     c.artist_id = 1
AND       c.paid = 1
AND       date_format(c.created, 'Y-m-d') between '2016-09-06' AND '2016-09-07'

My date time stamp is this: 2016-09-07 21:04:46

For some reason this does not return any records, why?

Answer 1

Change the following line:

AND date_format(c.created, 'Y-m-d') between '2016-09-06' AND '2016-09-07'

to

AND date(created) between '2016-09-06' AND '2016-09-07'

date() function will return the date from datetime and it will check in the given range.

Answer 2

use date() function instead of date_format()

SELECT    count(c.id) as totalOrders
    FROM      Cart c
    WHERE     c.artist_id = 1
    AND       c.paid = 1
    AND       date(c.created) between '2016-09-06' AND '2016-09-07'