I am stuck with a problem in MySQL. I want to get the count of records between two date-time entries.
For example:
I have a column in my table named 'created' having the datetime data type.
I want to count records which were created date-time between "TODAY'S 4:30 AM" and "CURRENT DATE TIME".
I tried some of MySQL's functions but still no luck with it.
Can you please help me with this?
thanks.
May be with:
SELECT count(*) FROM `table`
where
created_at>='2011-03-17 06:42:10' and created_at<='2011-03-17 07:42:50';
or use between:
SELECT count(*) FROM `table`
where
created_at between '2011-03-17 06:42:10' and '2011-03-17 07:42:50';
You can change the datetime as per your need. May be use curdate() or now() to get the desired dates.
select * from yourtable where created < now() and created > '2011-04-25 04:00:00'
select * from yourtable
where created < now()
and created > concat(curdate(),' 4:30:00 AM')
for speed you can do this
WHERE date(created_at) ='2019-10-21'
Related
I would like to ask if my Mysql statement is correct or not.. When I run this under mysql it does not return any error but I cannot retrieve the row for it. Here's my statement:
SELECT * FROM timekeeping WHERE createddate = NOW()
Here's what my table looks like
MySQL compare now() (only date, not time) with a datetime field
Try this:
SELECT * FROM timekeeping WHERE DATE(createddate) = DATE(NOW());
Most likely the createddate = NOW() is an exact time comparison , you are probably only interested in the year, month, day being the the same.
See here for details on how to do what you are trying to do:
http://dev.mysql.com/doc/refman/5.5/en/date-and-time-functions.html
Probably you want to search for today date.
Try this:
SELECT * FROM timekeeping WHERE DATE(createddate) = DATE(NOW());
now() includes the time. Given that your fields contain date AND time values, you'll only ever get a match if the date AND time are exact matches. You need to compare dates only:
... WHERE DATE(createddate) = CUR_DATE()
'2014-05-02' = '2014-05-02'
v.s.
... WHERE createddate = now()
'2014-05-02 22:14:00' = '2014-05-02 01:02:03'
My guess is that this isn't exactly what you want: NOW() function will return the exact timestamp for when the query is run, which means you are asking it for any records created at that exact moment in time.
You may want to try something more like:
SELECT * FROM timekeeping WHERE createddate = YOUR_DATE_CRITERIA
The title might be a bit misleading, but what I want is:
SELECT * FROM table ORDER BY pid ASC
And in one of the columns I have a DATE(). I want to compare the current date (not time) and return how many days are left till that date. Let's say the date is 2013-04-20 and today's date is 2013-04-16 I don't want to get any data if it's < current date. If it is I want it returned in days.
I've been looking around here and I've found no way to do it, and I can't for the love of me figure it out.
If you're looking for the difference between two date you can use the GETDATE function in MS SQL
SELECT DATEDIFF(DD, DateOne, DateTwo) FROM TABLE
This will return the difference in number of days between the two dates.
If you only want rows where the date field is less than or equal to today's date you can use:
SELECT DATEDIFF(DD, DateField, GETDATE())
FROM TableName
WHERE DateField <= GETDATE()
If you're using MySQL you can use DATEDIFF()
SELECT
DATEDIFF(NOW(), date_column) AS days_diff
FROM
tablename
Get the difference between two dates (ANSI SQL)
select the_date_column - current_date as days_left
from the_table
where the_date_column - current_date <= 4;
SQLFiddle: http://sqlfiddle.com/#!12/3148d/1
In a SQL statement, how do I compare a date saved as TIMESTAMP with a date in YYYY-MM-DD format?
Ex.: SELECT * FROM table WHERE timestamp = '2012-05-25'
I want this query returns all rows having timestamp in the specified day, but it returns only rows having midnight timestamp.
thanks
You can use the DATE() function to extract the date portion of the timestamp:
SELECT * FROM table
WHERE DATE(timestamp) = '2012-05-25'
Though, if you have an index on the timestamp column, this would be faster because it could utilize an index on the timestamp column if you have one:
SELECT * FROM table
WHERE timestamp BETWEEN '2012-05-25 00:00:00' AND '2012-05-25 23:59:59'
As suggested by some, by using DATE(timestamp) you are applying manipulation to the column and therefore you cannot rely on the index ordering.
However, using BETWEEN would only be reliable if you include the milliseconds. In the example timestamp BETWEEN '2012-05-05 00:00:00' AND '2012-05-05 23:59:59' you exclude records with a timestamp between 2012-05-05 23:59:59.001 and 2012-05-05 23:59:59.999. However, even this method has some problems, because of the datatypes precision. Occasionally 999 milliseconds is rounded up.
The best thing to do is:
SELECT * FROM table
WHERE date>='2012-05-05' AND date<'2012-05-06'
WHERE cast(timestamp as date) = '2012-05-05'
SELECT * FROM table WHERE timestamp >= '2012-05-05 00:00:00'
AND timestamp <= '2012-05-05 23:59:59'
Use a conversion function of MYSQL :
SELECT * FROM table WHERE DATE(timestamp) = '2012-05-05'
This should work
As I was researching this I thought it would be nice to modify the BETWEEN solution to show an example for a particular non-static/string date, but rather a variable date, or today's such as CURRENT_DATE(). This WILL use the index on the log_timestamp column.
SELECT *
FROM some_table
WHERE
log_timestamp
BETWEEN
timestamp(CURRENT_DATE())
AND # Adds 23.9999999 HRS of seconds to the current date
timestamp(DATE_ADD(CURRENT_DATE(), INTERVAL '86399.999999' SECOND_MICROSECOND));
I did the seconds/microseconds to avoid the 12AM case on the next day. However, you could also do `INTERVAL '1 DAY' via comparison operators for a more reader-friendly non-BETWEEN approach:
SELECT *
FROM some_table
WHERE
log_timestamp >= timestamp(CURRENT_DATE()) AND
log_timestamp < timestamp(DATE_ADD(CURRENT_DATE(), INTERVAL 1 DAY));
Both of these approaches will use the index and should perform MUCH faster. Both seem to be equally as fast.
SELECT * FROM table WHERE DATE(timestamp) = '2012-05-25'
It will work but not used index on "timestamp" column if you have any because of DATE function. below query used index and give better performance
SELECT * FROM table WHERE timestamp >= '2012-05-05 00:00:00'
AND timestamp <= '2012-05-05 23:59:59'
OR
SELECT * FROM table
WHERE timestamp >= '2012-05-05' AND timestamp < '2012-05-06'
Try running these to check stats
explain SELECT * FROM table
WHERE DATE(timestamp) = '2012-05-25'
explain SELECT * FROM table WHERE timestamp >= '2012-05-05 00:00:00'
AND timestamp <= '2012-05-05 23:59:59'
In case you are using SQL parameters to run the query then this would be helpful
SELECT * FROM table WHERE timestamp between concat(date(?), ' ', '00:00:00') and concat(date(?), ' ', '23:59:59')
When I read your question, I thought your were on Oracle DB until I saw the tag 'MySQL'. Anyway, for people working with Oracle here is the way:
SELECT *
FROM table
where timestamp = to_timestamp('21.08.2017 09:31:57', 'dd-mm-yyyy hh24:mi:ss');
Use
SELECT * FROM table WHERE DATE(2012-05-05 00:00:00) = '2012-05-05'
Let me leave here it may help someone
For people coming from nodejs and expressjs
getDailyIssueOperations(dateName, date, status) {
const queryText = `
select count(*) as total from issues
where date(${dateName})='${date}' and status='${status}';
`;
},
in case date and column name are variables please find the implementation usefull
Users of my site will be able to create events. They will set a date and a time separately. The event will be saved to a mysql database containing separate date and time columns.
I would like to query the database to return events which are up and coming but not passed. i.e. the event date is today or in the future and if the event date is today check the the time of the event hasn't passed.
I don't know the syntax for this and I cant seem to find it anywhere.
If anyone knows a good way to do this I'd very much appreciate your help.
The simplest way to express this efficiently in SQL and make use of any indexes you have on the date and/or time columns would be a query like this:
SELECT *
FROM your_table
WHERE date_column > current_date()
OR (date_column = current_date() AND time_column > current_time())
Depending on which version of MySQL you are using and how your table is indexed there is a small chance that the optimizer would prefer the query expressed as two SELECTs UNIONed together to avoid the OR:
SELECT *
FROM your_table
WHERE date_column > current_date()
UNION
SELECT *
FROM your_table
WHERE date_column = current_date()
AND time_column > current_time()
select * from table where concat_ws(' ',date_field,time_field) > now()
Why don't you use a datetime field?
in pseudocode
if ((date > today) OR (date == today AND time > now))
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'