MySQLでタイムスパンを計算する

このクエリは、2011年2月1日の深夜からの正確な日、時間、分、秒を表示します：

SELECT 
    TRIM(REPLACE(CONCAT(
        IF(dy=0,'',IF(dy=1,'1 day ',CONCAT(dy,' days '))),
        IF(hr=0,'',IF(hr=1,'1 hr ', CONCAT(hr,' hrs  '))),
        IF(mn=0,'',IF(mn=1,'1 min ',CONCAT(mn,' mins '))),
        IF(sc=0,'',IF(sc=1,'1 sec ',CONCAT(sc,' secs ')))),'  ',' '))
    TimeDisplay
FROM (SELECT dy,hr,mn,MOD(sec_aaaa,60) sc
FROM (SELECT dy,hr,FLOOR((sec_aaa - dy*86400 - hr*3600)/60) mn,sec_aaa sec_aaaa
FROM (SELECT dy,FLOOR((sec_aa - (dy*86400))/3600) hr,sec_aa sec_aaa
FROM (SELECT FLOOR(sec_a/86400) dy,sec_a sec_aa
FROM (SELECT (UNIX_TIMESTAMP() - UNIX_TIMESTAMP('2011-02-01 00:00:00')) sec_a)
A) AA) AAA) AAAA) B;

'2011-02-01 00:00:00'を置き換えるだけです 任意の日時値またはテーブル列名を使用します。

試してみてください!!!

UPDATE 2011-10-06 13:38 EDT

これを処理するために呼び出すことができるストアド関数を作成しました：

DELIMITER $$

DROP FUNCTION IF EXISTS `test`.`GetTimeDisplay` $$
CREATE FUNCTION `test`.`GetTimeDisplay` (GivenTimestamp TIMESTAMP)
RETURNS VARCHAR(32)
DETERMINISTIC
BEGIN

    DECLARE rv VARCHAR(32);
    DECLARE diff BIGINT;

    SET diff = UNIX_TIMESTAMP() - UNIX_TIMESTAMP(GivenTimestamp);
    SELECT
        TRIM(REPLACE(CONCAT(
            IF(dy=0,'',IF(dy=1,'1 day ',CONCAT(dy,' days '))),
            IF(hr=0,'',IF(hr=1,'1 hr ', CONCAT(hr,' hrs  '))),
            IF(mn=0,'',IF(mn=1,'1 min ',CONCAT(mn,' mins '))),
            IF(sc=0,'',IF(sc=1,'1 sec ',CONCAT(sc,' secs ')))),'  ',' '))
    INTO rv
    FROM (SELECT dy,hr,mn,MOD(sec_aaaa,60) sc
    FROM (SELECT dy,hr,FLOOR((sec_aaa - dy*86400 - hr*3600)/60) mn,sec_aaa sec_aaaa
    FROM (SELECT dy,FLOOR((sec_aa - (dy*86400))/3600) hr,sec_aa sec_aaa
    FROM (SELECT FLOOR(sec_a/86400) dy,sec_a sec_aa
    FROM (SELECT ABS(UNIX_TIMESTAMP() - UNIX_TIMESTAMP(GivenTimestamp)) sec_a)
    A) AA) AAA) AAAA) B;

    IF diff = 0 THEN
        SET rv = '0 secs';
    END IF;
    IF diff < 0 THEN
        SET rv = CONCAT(rv,' From Now');
    END IF;
    IF diff > 0 THEN
        SET rv = CONCAT(rv,' Ago');
    END IF;

    RETURN rv;

END $$

DELIMITER ;

クエリは次のように書き直すことができます：

$query = "select country, rprice as regPrice, mprice as midPrice, pprice as prePrice, saddress as streetAddress,
                _id as ID, lat, lng, sname as Name, logo, admin_level_1 as state, locale as city, test.GetTimeDisplay(rdate) as regDate, 
                test.GetTimeDisplay(mdate) as midDate, test.GetTimeDisplay(pdate) as preDate, 
                format((acos(sin(radians($lat1)) * sin(radians(lat)) + cos(radians($lat1)) *
                cos(radians(lat)) * cos(radians($lng1) - radians(lng))) * 6378),1) as distance from stationDetails where 
                (acos(sin(radians($lat1)) * sin(radians(lat)) + cos(radians($lat1)) * cos(radians(lat)) * 
                cos(radians($lng1) - radians(lng))) * 6378) <= $rad order by $sort asc, $type asc";

ストアド関数を別のデータベースに移動することをお勧めします。私が持っているコードは、ストアド関数をテストデータベースに配置します。

試してみてください!!!