PHP 和 MySQL：仅比较日期字段中的月份和日期，而不考虑年份

Question

I have a date field (myDate). Lets say the field has the following date:

2015-01-01 2013-12-31

If the users searches the field (myDate) with the following search parameters:

From Date : 2018-12-31 To Date : 2019-01-05

I want the query to return the dates listed above 2015-01-01 and 2013-12-31 because they lie within the range of dates (when it comes to month and day) submitted by the user

I tried the following query:

$listofUsers->whereRaw("DATE(CONCAT_WS('-',YEAR(NOW()),MONTH(myDate),DAY(myDate))) >= DATE(CONCAT_WS('-',YEAR(NOW()),MONTH(?),DAY(?)))",[$frm,$frm]);
$listofUSers->whereRaw("DATE(CONCAT_WS('-',YEAR(NOW()),MONTH(myDate),DAY(myDate))) <= DATE(CONCAT_WS('-',YEAR(NOW()),MONTH(?),DAY(?)))",[$to,$to]);

It works great for dates within the same year, but it fails if the submitted From Date and To Date are in two different years AND To Date month is smaller than From Date month.

Any idea how to make this work regardless of year

Answer 1

You can use this Query

$FromDate  = '2019-02-27';
$ToDate     = '2020-06-26';

SELECT * FROM `tblname` 
WHERE 
DATE(myDate) BETWEEN '$FromDate' AND '$ToDate' 
OR  
DATE(myDate) BETWEEN '$ToDate' AND '$FromDate';



SELECT * FROM `tblname` 
WHERE 
DATE(myDate) BETWEEN '2019-02-27' AND '2020-06-26' 
OR  
DATE(myDate) BETWEEN '2020-06-26' AND '2019-02-27';

Answer 2

It's not very clear from your question, but if I understand correctly you want this:

SELECT *
FROM table
WHERE myDate LIKE concat('%', :start_day_of_year, '%')
AND   myDate LIKE concat('%', :end_day_of_year, '%')

$users->whereRaw($sql, [
    'start_day_of_year' => substr($fromDate, 5), 
    'end_day_of_year' => substr($toDate, 5), 
]);

Answer 3

definitions

• From: user-input
• To: user-input
• Target: database-field

logic

There are 4 cases you have to cover:

1. From-Year > To-Year

   No match, since you dont cover a single day.

2. From-Year == To-Year. (standard)

   Target has to be >= From AND Target has to be <= To.

3. From-Year +1 < To-Year (From is more than 1 year relative to To)

   Match all, since you cover more than one year

4. From-Year +1 == To-Year. (From was last year relative to To)

   1. To >= From

      Match all since you cover at least a whole year.

   2. Target >= From OR Target <= To

      Match.

wrap all together

NOT(1) AND (2 OR 3 OR (4 AND (4.1 OR 4.2 )))

precourse

We transform day and month to a simple number, where comparison is easy:

DATE_FORMAT('2000-01-01','%m%d') will be 0101 => 101

building-blocks

• From-Year DATE_FORMAT(?,'%Y')
• To-Year DATE_FORMAT(?,'%Y')
• From DATE_FORMAT(?,'%m%d')
• To DATE_FORMAT(?,'%m%d')
• Target DATE_FORMAT(myDate,'%m%d')

as sql

-- 1
NOT(
    DATE_FORMAT(?,'%Y') > DATE_FORMAT(?,'%Y')
)
AND
(
    -- 2
    (
        DATE_FORMAT(?,'%Y') = DATE_FORMAT(?,'%Y')
        AND
        DATE_FORMAT(myDate,'%m%d') >= DATE_FORMAT(?,'%m%d')
        AND
        DATE_FORMAT(myDate,'%m%d') <= DATE_FORMAT(?,'%m%d')
    )
    OR
    -- 3
    (DATE_FORMAT(?,'%Y')+1) < DATE_FORMAT(?,'%Y')
    OR
    (
        -- 4
        (DATE_FORMAT(?,'%m%d')+1) = DATE_FORMAT(?,'%m%d')
        AND
        (
            -- 4.1
            DATE_FORMAT(?,'%m%d') >= DATE_FORMAT(?,'%m%d')
            OR
            -- 4.2
            (
                DATE_FORMAT(myDate,'%m%d') >= DATE_FORMAT(?,'%m%d')
                OR
                DATE_FORMAT(myDate,'%m%d') <= DATE_FORMAT(?,'%m%d')
            )
        )
    )
)

parameters

[$frm, $to, $frm, $to, $frm, $to, $frm, $to, $frm, $to, $to, $frm, $frm, $to]

You may be able to use named bindings. I dont know. (this will shorten the parameters significantly)

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Not testet - happy debugging:D