I am using a SQL query like:
SELECT * FROM game_list
WHERE start_date <= DATE(NOW()) AND end_date >= DATE(NOW())
ORDER BY game_id DESC;
Now, what time will this actually start and end? I mean I know on what date but what will the time be, is it midnight, 12 am, pm or what?
If i understand correctly you want to show a game only if current time is between start time and end time,in that case what you need is actually:
SELECT * FROM game_list
WHERE DATE(NOW()) >= start_date AND DATE(NOW()) <= end_date
ORDER BY game_id DESC;
This way it should work properly
The only problem i could see is if you don't format your start_date and end_date correctly.
If your value is full time stamp,you should simply use NOW() or CURRENT_TIMESTAMP directly as it contains both date AND time
If your start_date is year month day eg: 2012-05-12 you should use CURDATE()
If your value is simply a day number,like 1...2...3...4..etc you should use DAY()
I would doublecheck what start_date returns and decide accordingly,for reference i would take a look here date and time in mysql
If you are asking how the DATE function works: it simply extracts the date part of a datetime.
see http://dev.mysql.com/doc/refman/5.5/en/date-and-time-functions.html#function_date
SELECT DATE('2003-12-31 01:02:03');
-> '2003-12-31
This represents simply that day. Considered as datetime again it would become midnight(2003-12-31 00:00:00)
I think you want something like following
SELECT * FROM game_list
WHERE start_date <= DATE(NOW()) AND end_date >= DATE_SUB(NOW(), INTERVAL 1 DAY)
ORDER BY game_id DESC;
Above query fetch the records which starts before today and having end date greater than tomorrow's date
Related
I have database table with different records and they all have timestamp with them.
When I want to get a certain month (for example April) records is use following query:
SELECT *
FROM `water`
WHERE timestamp >= DATE_FORMAT('2020-04-01', '%Y-%m-%d')
AND timestamp <= DATE_FORMAT('2020-04-30', '%Y-%m-%d')
AND watercar='JV03'
ORDER by timestamp DESC
It will return me records which timestamp is between 01.04.2020-29.04.2020 but it misses the last day of april 30.04.2020 record.
I also tried >= <= and between operators, same issue although the record does exist.
What am I missing?
DB Fiddle: https://www.db-fiddle.com/f/nWFFZmUt7FM17c98DXRRQw/0
Update your query to this:
SELECT *
FROM `water`
WHERE timestamp between DATE_FORMAT('2020-04-01', '%Y-%m-%d 00:00:00') AND DATE_FORMAT('2020-04-30', '%Y-%m-%d 23:59:59') AND watercar='JV03'
ORDER by timestamp DESC
or
SELECT *
FROM `water`
WHERE DATE(timestamp) between DATE_FORMAT('2020-04-01', '%Y-%m-%d') AND DATE_FORMAT('2020-04-30', '%Y-%m-%d') AND watercar='JV03'
ORDER by timestamp DESC
First, there should be no need to use date_format). MySQL should understand dates in the YYYY-MM-DD format.
Second, do not use between with date/time values. Instead, to get everything in April, use:
where timestamp >= date('2020-04-01') and
timestamp < date('2020-05-01')
This formulation works both when the column as a time component and when it does not. So, I recommend it in all situation.
If you want to pass in the end date as a parameter, you can use:
where timestamp >= :start_dt and
timestamp < :end_dt + interval 1 day
I am trying to create a query to get the records for last two days. In my table there is a field called dates. Values are as below:
05-08-2018 08:05:22
05-08-2018 10:15:42
dd-mm-yyyy hh:ii:ss
I have created the query.
SELECT id,title,description, dates
FROM post_feed where `dates` BETWEEN CURDATE() - INTERVAL 1 DAY AND CURDATE()
ORDER BY dates DESC LIMIT 100
When I run the query it return 0 records. It looks like issue with date format.
Seems like your dates are stored as varchar. You must convert them to date (e.g. by using STR_TO_DATE) before you can perform any comparison.
Assuming for example that today is Aug-05 and you want results for Aug-04 and 05 (inclusive):
SELECT id, title, description, dates
FROM post_feed
WHERE STR_TO_DATE(dates, '%d-%m-%Y') BETWEEN CURRENT_DATE - INTERVAL 1 DAY AND CURRENT_DATE
ORDER BY dates DESC
LIMIT 100
SQL Fiddle
Try this WHERE clause:
WHERE STR_TO_DATE(dates, '%d-%m-%Y %H:%i:%s') BETWEEN DATE_ADD(CURDATE(), INTERVAL -2 DAY) AND CURDATE()
Your second date is before your first date. Put greater date at first place & put lesser date at second place.
SELECT id,title,description, dates
FROM post_feed where CAST(`dates`as date) BETWEEN CURDATE() AND CURDATE() - INTERVAL 1 DAY
ORDER BY dates DESC LIMIT 100
Fix your data! Your query doesn't work because the "date" value are stored as text/varchar. This is easily fixed:
update post_feed
set dates = str_to_date(date, '%Y-%m-%d %H:%i:%s')
alter table post_feed
modify column datetime;
Voila! Your queries will now work.
I'm using a custom PHP function to produce a visual calendar for a single month that blocks out dates based on a table that contains an start date, and an duration - For example:
...This is produced by data saying that the table should be blocked out for 4 days from the 14th, and 7 days from the 27th.
The query looks something like this:
SELECT GROUP_CONCAT(DATE_FORMAT(start_date,'%d'),':', event_duration) AS info
FROM events
WHERE YEAR(start_date = '2012'
AND MONTH(start_date) = '07'
ORDER BY start_date
(You could safely ignore the group concat and return the data as individual rows, that doesn't really matter).
I'm looking for a modification to the query that would block out dates at the start of the month IF an event starts in the previous month, but its length takes it into the following.
For instance - in the above example, the event on the 27th is actually scheduled to last 7 days in the database, so if I ran the query for MONTH(start_date) = '08' I'd like to say the first two dates blocked out, which they wouldn't currently be, because the start date that would block it out is not in the month being selected.
I'm fairly sure there's a subquery or something in there to grab the rows, but I just can't think of it. Any takers?
EDIT
The answer from Salman below pointed me in the directon I wanted to go, and I came up with this as a way of getting carryovers from the previous month to show as '1st' of the month with the number of remaining days:
SELECT IF(MONTH(start_date) < '08', '2012-08-01', start_date) AS starter,
IF(MONTH(start_date) < '08', duration - DATEDIFF('2012-08-01',start_date), duration) AS duration
FROM EVENTS
WHERE YEAR(start_date) = '2012'
AND (MONTH(start_date) = '08' OR MONTH(start_date + INTERVAL duration DAY) = '08')
Obviously a lot of variables there to replace in PHP, so maybe there's an even better way?
Original Answer:
Assuming that the month in question is 2012-07, you need this query:
SELECT column1, column2, columnN
FROM `events`
WHERE `start_date` <= '2012-07-01'
AND `start_date` + INTERVAL `duration` DAY > '2012-07-01'
ORDER BY start_date
Revised Answer:
Apparently you need a query that checks for overlapping (or conflicting) dates. The example dates are 2012-07-01 through 2012-08-01 and the query is:
SELECT *
FROM events
WHERE '2012-08-01' > start_date
AND start_date + INTERVAL duration DAY > '2012-07-01'
ORDER BY start_date
To constrain the start date and interval, you can use SELECT ... CASE statement:
SELECT
CASE
WHEN start_date < '2012-07-01' THEN '2012-07-01'
ELSE start_date
END AS start_date_copy,
CASE
WHEN start_date < '2012-07-01' THEN duration - DATEDIFF('2012-07-01', start_date)
ELSE duration
END AS duration_copy,
FROM ...
The answer I was looking for, thanks to the other contributor for pointing me in the right direction and enabling me to solve it!
This is based on $yyyy and $mm coming from PHP (in my case, into a function call), and selecting individual rows rather than grouping:
SELECT start_date, duration
FROM reservations
WHERE YEAR(start_date) = '".$yyyy."'
AND MONTH(start_date) = '".$mm."'
UNION
SELECT '".$yyyy."-".$mm."-01',
duration - DATEDIFF('".$yyyy."-".$mm."-01',start_date)
FROM reservations
WHERE YEAR(start_date) = '".$yyyy."'
AND MONTH(start_date) < '".$mm."'
AND MONTH(start_date + INTERVAL duration DAY) = '".$mm."'
ORDER BY start_date
So I have this:
(CURDATE() BETWEEN start_date AND end_date)
Works fine.
But when the CURDATE() is 2011-12-02 and the end_date is 2011-12-02 will it grab the row?
E.g my start_date is 2011-12-01 00:00:00 and my end date is 2011-12-02 23:59:59
So it only works when the date is between but not if it's ON the end_date itself.
Or maybe it should check for the time too, because it still needs to be selected with this query when it's 2011-12-02 15:30:00 for example.
How can I do this?
Well, you could try
CURDATE() BETWEEN start_date AND DATE_ADD(end_date, INTERVAL 1 DAY)
Since both columns are timestamps, you need to make sure times don't trip you up.
To keep the times from tripping you up, cast the timestamps to date.
where current_date between cast(start_date as date)
and cast(end_date as date);
Maybe the answer to this question refers to a bug in an old version of MySql because between is inclusive, which means it will grab rows between the start and end dates inclusive, not just between the start and one day before the end.
Try this:
SELECT CURDATE() BETWEEN CURDATE() AND CURDATE();
The result is 1 (i.e. true).
I believe the original poster problem lies with mixing up proper dates (DATE) and dates with time (DATETIME or TIMESTAMP).
Try this:
SELECT NOW() BETWEEN CURDATE() AND CURDATE();
SELECT NOW() BETWEEN CURDATE() AND DATE_ADD(CURDATE(), INTERVAL 1 DAY);
The result is 0 for the first select and 1 for the second. What happened is a DATE is equivalent to a DATETIME with zero time so unless NOW() is called exactly at midnight it will be greater than CURDATE() and fall outside of the BETWEEN statement.
To prevent this test only the DATE part of a DATETIME using the DATE() function:
SELECT DATE(NOW()) BETWEEN CURDATE() AND CURDATE();
Use start_date <= CURDATE() AND end_date > CURDATE()
It will work ... BETWEEN works inclusive of the boundary values. That is,
(CURDATE() BETWEEN start_date AND end_date)
including start_date,end_date and any day falling between
CURDATE() BETWEEN start_date AND ADDDATE(CURDATE(), INTERVAL 1 DAY);
cast (end_date - Start_date as double precision) * 86400
How to select data from mysql table past date to current date? For example, Select data from 1 january 2009 until current date ??
My column "datetime" is in datetime date type. Please help, thanks
Edit:
If let say i want to get day per day data from 1 january 2009, how to write the query? Use count and between function?
select * from *table_name* where *datetime_column* between '01/01/2009' and curdate()
or using >= and <= :
select * from *table_name* where *datetime_column* >= '01/01/2009' and *datetime_column* <= curdate()
All the above works, and here is another way if you just want to number of days/time back rather a entering date
select * from *table_name* where *datetime_column* BETWEEN DATE_SUB(NOW(), INTERVAL 30 DAY) AND NOW()
You can use now() like:
Select data from tablename where datetime >= "01-01-2009 00:00:00" and datetime <= now();
Late answer, but the accepted answer didn't work for me.
If you set both start and end dates manually (not using curdate()), make sure to specify the hours, minutes and seconds (2019-12-02 23:59:59) on the end date or you won't get any results from that day, i.e.:
This WILL include records from 2019-12-02:
SELECT *SOMEFIELDS* FROM *YOURTABLE* where *YOURDATEFIELD* between '2019-12-01' and '2019-12-02 23:59:59'
This WON'T include records from 2019-12-02:
SELECT *SOMEFIELDS* FROM *YOURTABLE* where *YOURDATEFIELD* between '2019-12-01' and '2019-12-02'