mysql date and time format code example

Example 1: convert_tz mysql

CONVERT_TZ(datetime, from_tz, to_tz)

Example: 
SELECT CONVERT_TZ('2031-09-21 02:42:14', 'UTC', 'America/New_York');
output: 2031-09-20 22:42:14

Example 2: mysql format date

DATE_FORMAT(date, format)
-- E.g.
SELECT DATE_FORMAT(dateField, '%m/%d/%Y') FROM TableName;
-- See https://www.mysqltutorial.org/mysql-date_format/ for available formats

Example 3: format time mysql

-- use DATE_FORMAT with %H %i
-- SELECT DATE_FORMAT(MemberBookFacility.time, '%H:%i')
"45": "09:00",
"24": "10:00",
"42": "11:00",
"48": "12:00",

-- ONcakephp must use below format
$this->virtualFields['time'] = "DATE_FORMAT(MemberBookFacility.time, '%H:%i')";	// using this for use concat
	
		return $this->find('list', array(
          'conditions' => $conditions,
          'fields' => array(
            'MemberBookFacility.id', 
            'time',
          ),
          'order' => array(
            'MemberBookFacility.time ASC',
          ),
        ));

Example 4: get individual date elements in mysql

-- To get the year of a date in mysql
SELECT YEAR(NOW());

-- To get the month of a date in mysql
SELECT MONTH(NOW());

-- To get the day of a date in mysql
SELECT DAY(NOW());

-- To get the hour of a date in mysql
SELECT HOUR(NOW());

-- To get the minute of a date in mysql
SELECT MINUTE(NOW());

-- To get the second of a date in mysql
SELECT SECOND(NOW());