MySQL query to show all the hours within the next month - mysql

Question

How would I put together a query to display all of the hours in the next week as I want to compare a timetable against this for appointment purposes.
Thanks for any help!
edit--
the expected result would be great as between 9 to 5
| client_date | client_time |
10/01/2010 09:00:00
10/01/2010 10:00:00
10/01/2010 11:00:00
10/01/2010 12:00:00
10/01/2010 13:00:00
10/01/2010 14:00:00
10/01/2010 15:00:00
10/01/2010 16:00:00
10/01/2010 17:00:00

Answer 1

You will need to create a table to store the date and time values.
CREATE TABLE calendarhours (caldaytime DATETIME);
You will then need to create a stored procedure to loop through the two dates and insert the date time values for the time sheet times into the table.
DELIMITER $$
CREATE DEFINER=`root`#`localhost` PROCEDURE `timesheetdays`(startdate DATETIME, enddate DATETIME)
BEGIN
DECLARE tempdate DATETIME;
DELETE FROM `calendarhours`;
-- set the temp date to 9am of the start date
SET tempdate = DATE_ADD(DATE(startdate), INTERVAL '0 9' DAY_HOUR);
-- while the temp date is less than or equal to the end date, insert the date
-- into the temp table
WHILE ( tempdate <= enddate ) DO
BEGIN
-- insert temp date into temp table
INSERT INTO `calendarhours` (caldaytime) VALUES (tempdate);
-- increment temp date by an hour
SET tempdate = DATE_ADD(tempdate, INTERVAL '0 1' DAY_HOUR);
-- if the temp date is greater than 5 PM (17:00) then increment to the next day
IF TIMEDIFF(tempdate, DATE_ADD(DATE(tempdate), INTERVAL '0 17' DAY_HOUR)) > 0 THEN
BEGIN
-- increment to the next day
SET tempdate = DATE_ADD(DATE(tempdate), INTERVAL '1 9' DAY_HOUR);
-- for business purposes, if the day is a Saturday or a Sunday increment
-- until we reach Monday
WHILE ( DAYNAME(tempdate) = 'Saturday' OR DAYNAME(tempdate) = 'Sunday' ) DO
BEGIN
SET tempdate = DATE_ADD(DATE(tempdate), INTERVAL '1 9' DAY_HOUR);
END;
END WHILE;
END;
END IF;
END;
END WHILE;
-- return all the inserted date and times
SELECT * FROM calendarhours ORDER BY caldaytime;
END
This procedure will then loop through the two dates, starting from 9 am each day and finishing at 5pm each day (17:00). When the time reaches 18:00, the procedure increments to the next day and starts again at 9 am.
If you are doing a standard business week timesheet, then if the day is equal to Saturday or Sunday, it will increment until it reaches Monday.
To test this I used the following statements:
CALL `timesheetdays`(NOW(), DATE_ADD(DATE(NOW()), INTERVAL '5 0' DAY_HOUR));
SELECT * FROM `calendarhours`;
This tests the procedure from today to 5 days from today and shows the hours as required. The first statement adds the records to the table and then returns the records, the second statement returns the records from the table.

Answer 2

you can use a temporary table in a stored procedure.
DELIMITER ;;
DROP PROCEDURE IF EXISTS ListHours ;;
CREATE PROCEDURE ListHours()
BEGIN
DECLARE curDT DATETIME;
DECLARE today DATETIME ;
DECLARE nextSaturday DATETIME;
DECLARE nextSunday DATETIME;
DECLARE iterDate DATETIME;
DECLARE iterDateTime DATETIME;
DECLARE iterBound DATETIME;
DECLARE resDate DATETIME;
DECLARE resTime DATETIME;
DECLARE delta INT;
DROP TABLE IF EXISTS tempNextWeek;
CREATE TEMPORARY TABLE IF NOT EXISTS tempNextWeek
(
client_date VARCHAR(20),
client_time VARCHAR(20)
);
DELETE FROM tempNextWeek;
SET curDT = NOW();
SET today = ADDTIME(SUBTIME(curDT , TIME(curDT)) , '9:0:0');
SET delta = 8 - DAYOFWEEK(today);
SET nextSunday = ADDDATE(today , INTERVAL delta DAY);
SET nextSaturday = ADDTIME(nextSunday , '6 0:0:0');
-- select today , delta , nextSaturday , nextSunday ;
SET iterDate = nextSunday;
WHILE iterDate <= nextSaturday DO
SET iterDateTime = iterDate;
SET iterBound = ADDTIME(iterDateTime, '8:0:0');
WHILE iterDateTIme <= iterBound DO
INSERT tempNextWeek (client_date, client_time) VALUE ( DATE_FORMAT(iterDateTime, '%Y-%m-%d'), DATE_FORMAT(iterDateTime, '%H:%i:%s') );
SET iterDateTime = ADDTIME(iterDateTime , '1:0:0');
END WHILE;
SET iterDate = ADDTIME(iterDate , '1 0:0:0');
END WHILE ;
SELECT * FROM tempNextWeek;
-- drop table if exists tempNextWeek;
END;;
DELIMITER ;
CALL ListHours();