如何在PHP和MySQL中仅使用月份和年份选择两个日期之间的记录？

So I have this code:

$date_from = "2017-04-01";
$date_to = "2017-05-01"

$stmt = $this->pdo->prepare("SELECT * FROM records where created_at BETWEEN :start_date AND :end_date");

$stmt->execute([':start_date' => $date_from, ':end_date' => $date_to]);

My created_at is a timestamp field.

My problem here is that though it works, I only need to select between months and year only in the created_at field because in my code, the date is also included in selecting data. I only want "2017-04" - "2017-5" records for example so that even if a record like "2017-05-31" is still under "2017-5". What am I missing here?

Let's say I have a record where the created_at value is "2017-05-01". It will not be selected because it's not between the given dates that's why I need to fix my code to only use months and years even if the dates given are with date.

Any help would be much appreciated.

$date_from = "2017-04-01";
$date_to = date("Y-m-d",strtotime($date_from." +1 months"));

$stmt = $this->pdo->prepare("SELECT * FROM records where created_at BETWEEN :start_date AND :end_date");

$stmt->execute([':start_date' => strtotime($date_from), ':end_date' => strtotime($date_to]));

Try this. If you created_at is timestamp. Your searching criteria also need to be timestamp

To search within a month or year u may do like following.

 $date_from = "2017-04-01";
 $date_to = date("Y-m-d",strtotime($date_from." +1 months")); // to add one month from 2017-05-01

Convert your Dates to timestamp in php or even mysql

PHP:
$date_from_timestamp = strtotime($date_from);
$date_from_timestamp = strtotime($date_to);


MySQL:
UNIX_TIMESTAMP($date_from)
UNIX_TIMESTAMP($date_to)

format your datetime.

You can use a string comparison.

DATE_FORMAT('2017-04-01','%Y%m') return date: 201704.

so your where clause should be

"created_at DATE_FORMAT(created_at,'%Y%m') >= DATE_FORMAT($date_from,'%Y%m') and DATE_FORMAT(created_at,'%Y%m') <= DATE_FORMAT($date_to,'%Y%m') "

I assume you are ignoring the day of the input and requested to get both April and May records

$date_from = "2017-04-01";
$date_to = "2017-05-01";

$stmt = $this->pdo->prepare("SELECT * FROM records where created_at BETWEEN :start_date AND :end_date");

$stmt->execute([
    ':start_date' => date("Y-m-01 00:00:00",strtotime($date_from)), 
    ':end_date' => date("Y-m-31 23:59:59",strtotime($date_to))
]);