Stack Overflow. SELECT UNIX_TIMESTAMP (timestring) Time format: YYYY-MM-DD HH:MM:SS or YYMMDD or YYYYMMDD. In general, it is required that the types of all the columns are in agreement. Below. Date or DateTime could be one of them. 0. How to convert second to formatted date time in mysql? I have a query to get date difference in second. Now if. My guess - he used EXTRACT (SECONDS FROM. Hi I tried the following: timediff(`date2`, `date1`) which gives me the time difference but if the days are different it does not account for the day difference. sql console application and it supposed to show it as requested. TIMESTAMPDIFF (unit,datetime_expr1,datetime_expr2) where unit argument, which should be one of the following values: MICROSECOND (microseconds), SECOND, MINUTE, HOUR, DAY, WEEK, MONTH, QUARTER, or YEAR. I ran this on a shared server from the ISP JustHost, MYSQL version 5. I am migration mysql to Postgres Runing this bellow query on both Mysql and Postgres SELECT cb_sessions. . 0. TIMESTAMPDIFF in a php foreach-loop. You probably want to use timestampdiff () select DriverName, CarType, min (timestampdiff (second, StartTime, EndTime)) as Best, max (timestampdiff (second, StartTime, EndTime)) as Worst from followingtable ft group by DriverName, CarType; If you want to show the value as a time format: select DriverName, CarType, date_format (cast. In MariaDB, you can use TIMESTAMPDIFF function. 3 Answers. The function subtracts one datetime value from the other in the specified unit. We can define a Unix timestamp as the number of seconds that have passed since ‘1970-01-01 00:00:00’UTC. All this data is stored in a single table. One expression may be a date and the other a datetime. DATE_SUB () Subtract a time value (interval) from a date. Here's the sql:. You can use MySQL's UNIX_TIMESTAMP () function to convert your datetime expressions to seconds since the UNIX epoch, then taking the sum of all differences will yield the total duration in seconds: SELECT SUM (UNIX_TIMESTAMP (stop_time) - UNIX_TIMESTAMP (start_time)) FROM my_table. . 0. timestampdiff. Seconds, Minutes, Hours, Days, Weeks,. MySQL TIMEDIFF() Function MySQL Functions. UPDATE `table` SET end_dt = DATE_ADD(end_dt, INTERVAL (15 - TIMESTAMPDIFF(SECOND, NOW(), end_dt)) SECOND) WHERE DATE_SUB(end_dt, INTERVAL 15 second) <=. . so. rtcdatetime field and current UTC: TIMESTAMPDIFF (SECOND, rcv. g. 1. SELECT * FROM tableName WHERE TIMESTAMPDIFF (MINUTE,timestamp,NOW ()) < 10. Weeks, quarters, and years follow from that. I have currently logged more than 900 hours of work this year though, and I want the result of my query to reflect this. Description. Subtracts the 2nd argument from the 1st (date1 − date2). I would recommend to choose that unit. This function takes three arguments: the unit of time you want to measure the difference in (e. TiDB 支持使用 MySQL 5. TIMESTAMPDIFF () does not support dynamic units like that. @Bruno - If the data types are TIMESTAMP WITH TIME ZONE, the interval that results from subtracting the two should take care of any time zone/ daylight savings time conversion. MySQL has a built-in function called TIMESTAMPDIFF, which we can use to calculate the difference between two timestamps in various units of measurement. Learn more about TeamsMySQL TIMESTAMPDIFF() Function - The DATE, DATETIME and TIMESTAMP datatypes in MySQL are used to store the date, date and time, time stamp values respectively. EntityFrameworkCore 6. The basic syntax: TIMESTAMPDIFF(unit,datetime1,datetime2); You can find a list with different types of units, check out the list in the section above. minutes = total_seconds DIV 60. The timestamp difference returns the difference between two dates in seconds. TIMESTAMPDIFF(MINUTE,T. speed as speed FROM stops f, stops f2 where f2. 3 Answers. The unit argument can be MICROSECOND, SECOND, MINUTE, HOUR, DAY, WEEK, MONTH, QUARTER, or YEAR. It supports time series analysis by allowing you to calculate. Run SQL » Result: Click "Run SQL" to execute the SQL statement above. Here are the first 25 rows of. 01. 0. 2 Answers. 0 and later) An implementation of . DATE_FORMAT () Format date as specified. net. SELECT TIMESTAMPDIFF(HOUR, UTC_TIMESTAMP(), NOW()); If the server's timezone is PST this will return -8. Stack Overflow. mysql> create table DemoTable -> ( -> DueDatetime1 datetime, -> DueDatetime2 datetime -> ); Query OK, 0 rows affected (0. Improve this answer. The TIMESTAMPDIFF function returns an estimated number of intervals of the type that is defined by the first argument, based on the difference between two timestamps. SELECT FROM_UNIXTIME (epoch timestamp, optional output format) The default output is YYYY-MM-DD HH:MM:SS. SELECT TIMESTAMPDIFF (SECOND, start_time, end_time). ). I currently developed a cron that runs every 1 minute to analyze the last 60 seconds of the bot records in database, I need to group the conversation ID's that have more than 3 records within 60 seconds in the same url and client_session_id. I tried to look for a solution with annotate, but there is no support for aggregate functions in either mysql nor postgres. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. ) and got 10:25:30 - 10:15:25 = 5 seconds. select timestamp ('2021-01-02 03:04:05')-0;. In the above syntax, the expr is used to determine the interval value, and. As the previous example demonstrates, the TIMESTAMPDIFF () allows you to specify a unit for the results to be returned as (in fact, it requires you to specify the unit). . select SEC_TO_TIME (sum (diff)) as result from ( select timestampdiff (second,min (case when log_tpe='start_break' then timestamps end) , min (case when log_tpe='end_break' then timestamps end)) as diff from t group by date (timestamps),hour (timestamps) )A. I am using the below query to find the time difference in minutes. Here’s that simple example we used earlier: SELECT TIMESTAMPDIFF(SECOND,'2007-12-30 12:01:01','2007-12-31 10:02:00'); This piece of code gives us the difference in seconds between the two specified dates. Functions that return the current date or time each are evaluated only once per query at the start of query execution. We’ve expanded upon our SQL Dates & Times blog entry with examples of calculating the difference between dates and times with DATEDIFF, TIMEDIFF, and TIMESTAMPDIFF, along with a quick aside on how to use these functions to shape the results set from a. Then user 10 logged in at 2021-09-03 18:49:00. PHP MySQL TIMESTAMPDIFF with seconds not working. last_name, b. Change the unit time to second and then convert the diff second to time. 13. To calculate the difference between two date/datetime expressions, use TIMESTAMPDIFF. Unable to use 'where' when using 'timestampdiff' in mySQL. MySQL has a handy function TIMESTAMPDIFF which can calculate the difference between two timestamps in a variety of units, including seconds. 如果任何一个参数为 NULL ， TIMESTAMPADD () 函数将返回 NULL 。. You should take a look the TIMESTAMPDIFF function. ADDDATE ( date ,INTERVAL expr unit) , ADDDATE ( date, days) The TIMESTAMPDIFF function returns the result of begin - end, where begin and end are DATE or DATETIME expressions. MySql. More information on time_format:. First we calculate the absolute difference in seconds and put that in a variable; then we check if we get one or more of each (day hour minute), and if so we calculate how any we get and put that in a variable; for units after the largest, we do the same, but first we subtract the seconds allotted to the previous unit from our overall. If I concat it with ' : '. In this case, TIMESTAMP is identical with DATETIME. Check the line when timestampdiff (minute, created_on, current_timestamp) > 3 AND < 60 then " minutes ago" to be correct you should change to when timestampdiff (minute, created_on, current_timestamp) > 3 AND timestampdiff (minute, created_on, current_timestamp) < 60 then " minutes ago". Similar to Timo Kähkönen's answer, I've used TIMESTAMPDIFF to determine if a date is valid like ISDATE does. MySQL Database: Restore Database. SELECT f. To understand the MySQL convert timediff output to day, hour, minute, and second format, you need to use CONCAT () from MySQL. But from what i can see in the logs its more like that Drill Hands over the Function Call "TIMESTAMPDIFF" to the Oracle database. TIMEDIFF can't have more than 839 hours and hence, you won't be able to measure the difference for longer ranges than ~35 days. The table set might indeed become large in the long run, so that is why this answer is a little bit more usefull for me than the other, though appreciate Sebastian's answer aswell. The null DATETIME columns cause the TIMESTAMPDIFF () function to return NULL. The unit for the result (an integer) is given by the unit argument. The following table summarizes the difference between these two functions: TIMEDIFF () TIMESTAMPDIFF () Requires 2 arguments. To get the corrected TIMESTAMPDIFF, I therefore multiply the number of Saturdays, Sundays and holidays by 24 to get the number of hours to be subtracted, then subtract that number from the TIMESTAMPDIFF. In SQL Server, you can use DATEDIFF function to get the datetime difference in specified units. Net write timeout (in seconds): Seconds to wait for data from the server before aborting the connection. If you want to read about CONVERT () and CAST () here is the link. Because the number 21 matches with the %d specifier, the function takes 21 as the day value. The MySQL TIMESTAMPDIFF() function is used to find the difference between two date or datetime expressions. Aurora MySQL also supports DATE_SUB for subtracting date parts from a date time expression. Starting with your example query, something like this would probably work: SELECT foo FROM table t LEFT JOIN frequencies f USING (frequency_id) WHERE MOD ( (CASE WHEN f. To avoid having to repeat yourself, you can wrap the calculation: SELECT HOUR(x. 1 Answer. 549345 (and then false. Your code is right, TIMESTAMPDIFF () returns a value after subtracting a datetime expression from another. DateDiff to show Minutes and Seconds. Instead, the result is 838:59:59, which makes sense because that is the limit. not sure what. select t. If you are looking for row less than 1 day old (meaning less than 24 hours old, or less than 86400 seconds old), with a resolution up to a second, you could use a predicate like one of these:. x -- here's an example : Erratic behaviour of TIMESTAMPDIFF() Note that MySQL 5. Note that unit values can be different in SQL Server DATEDIFF and MariaDB TIMESTAMPDIFF. The TIMESTAMPDIFF function returns the. 目次. Some days have an extra second or two seconds depending on the year. TIMESTAMPDIFF(unit,datetime_expr1,datetime_expr2) Returns datetime_expr2 – datetime_expr1, where datetime_expr1 and datetime_expr2 are date or datetime expressions. The output is 510 because start value is 29/10/2012 05:13. Reading time: 2 minutes. As a result, such columns use DATETIME display format, have the same range of values, and there is no. end) as elapse from c1) dfMySQL. Share. Q&A for work. SELECT id, timeIn, timeOut, TIMEDIFF ( timeOut, timeIn ) AS timeDifference FROM table WHERE TIMESTAMPDIFF ( SECOND, timeOut, timeIn ) > 180000; This statement will output the fields for each record where the difference between the two timedates is one second or more over 50 hours (or 180000 seconds ). MM. So, to get results that we need we can calculate the TIMESTAMPDIFF between some anchor datetime and CreatedDate and UpdatedDate instead of calculating the difference between CreatedDate and. 58 and found no overflow with timestamps differing by up to at least 10000 years. 1 why does mysql timediff function give wrong output? Load 7 more related questions Show. I have this table but I am helpless how to calculate seconds for each separate day from this table: id from to ----- 1 2013-01-31 23:50:00 . TIMESTAMPDIFF. Solution is using select timestampdiff(DAY, '2016-04-13 11:00:01', '2016-04-14 11:00:00'); (note the opposite. DATEADD. ). elapse)/60 as diff from( SELECT c1. In MySQL, the TIMESTAMPADD () function allows you to add a specified amount of time to a date or datetime value. To avoid having to repeat yourself, you can wrap the calculation: SELECT HOUR(x. Share. SELECT ABS (TIMESTAMPDIFF (SECOND, start_time, end_time)). MICROSEGUNDO,. The function allows you to calculate time differences in units other than seconds, such as years, months, or days. +1 for to the point the stored timestamp is less than x minutes. timestampdiff () requires valid dates for the second and third argument. It is to be noted that two expressions must be the same type. It only returns the result in days. Your query string would look like this:Your problem is that TIMESTAMPDIFF effectively first truncates the values to the indicated precision (e. TIMESTAMPDIFF giving unexpected result. Note: Basically, you provide a number of seconds as an argument, and it will change it to a time value. You can use it like you would any other value in e. 7 Date and Time Functions. TIMESTAMPDIFF - How to use it in. Test2 gives midnight of the end of the week and subtracts from the Post Date of a B type account. One expression may be a date and the other a datetime; a date value is treated as a datetime having the time part '00:00:00' where necessary. Connect and share knowledge within a single location that is structured and easy to search. Look at the documentation for TIMESTAMPDIFF () TIMESTAMPDIFF (unit,datetime_expr1,datetime_expr2) Returns datetime_expr2 − datetime_expr1, where datetime_expr1 and datetime_expr2 are date or datetime expressions. userid,cb_users. Most of the date/time functions in. 0. 5 日付の計算. That will give you the average differences for each distinct value of col1. It effectively calculates the difference in seconds and divides (discarding the fractional part) by the number of seconds in the chosen unit. So basically what this query does is that it calculates days by deducing dates in the first line. TIMESTAMPDIFF. TIMESTAMPDIFF timestampdiff description Syntax INT TIMESTAMPDIFF(unit, DATETIME datetime_expr1, DATETIME datetime_expr2) Returns datetime_expr2 − datetime_expr1, where datetime_expr1 and datetime_expr2 are date or datetime expressions. +1 For keeping the query sargable and not wrapping the timestamp column within a function for comparison. 0. Like for example the conversion value to Hours and Minutes is 4 Hours and 30 Minutes. . g. MySQL is quite different from SQLite. One solution you could use is extra in django queryset. In order to convert days to a date, so you can get the number of years etc you need to use from_days(); from_days() doesn't really work before 1582, to quote from the documentation: "Use FROM_DAYS(). The TIMESTAMPDIFF() function is truly a powerful tool in our SQL arsenal, enabling us to easily calculate differences between two timestamps. Description. timeDiff), SECOND(x. timestampdiff() 日付時間式から間隔を減算します to_days() 日に変換された日付引数を返します to_seconds() 0 年以降の秒数に変換された日付または日付時間引数を返します unix_timestamp() unix タイムスタンプを返します utc_date() 現在の utc 日付を返しますI'm giving input to TIMESTAMPDIFF(HOUR,'29-10-2012','19-11-2012') but I'm getting output as 504 but the value should be 510. At least these are real and true seconds, unlike the MySQL DATEDIFF where they are. 0. So working with dates is something every MySQL database developer must do once in a while. MySQL には、年齢の計算や日付の一部の抽出など、日付の計算に使用できる関数がいくつか用意されています。. mysql> SELECT TIMESTAMPDIFF (MINUTE,'2003-02-01','2003-05-01 12:05:55'); -> 128885. 000Z','2020/01/28. Follow. Usage and definition for TIMESTAMPDIFF function (Doc ID 2756136. TIMESTAMPDIFF(MINUTE,T. TIMEDIFF () is essential for time-based analysis by enabling you to measure the duration of events or actions. NOTE the most voted up answer in this chain is INCORRECT! Using HOUR will only return hours as an integer. Improve this answer. Where a time stamp is a numerical value representing the number of milliseconds from '1970-01-01 00:00:01' UTC (epoch) to the specified time. Actually i need to get the time difference between date_time field to now() so i used this query SELECT `date_time`,now(),timediff(`. One expression may be a date and the other a datetime; a date value is treated as a datetime having the time part '00:00:00' where necessary. The unit for the result (an integer) is given by the unit argument. MySQL. Immutable if start and end dates are TIMESTAMP; Stable if start and end dates are TIMESTAMPTZ; SyntaxFor MySQL The TIMESTAMPDIFF is the native MySQL function which returns the difference between two given timestamps (one timestamp is subtracted from the other) for the specified date part interval (seconds, days, weeks, etc. MySQL TIMESTAMPADD () adds time value with a date or datetime value. Alternatively, you can use either of the functions TIMESTAMPDIFF() and UNIX_TIMESTAMP(), both of which return integers. 0. MySQL Database: Restore Database. The unit for the result (an integer) is given by the unit argument. I have a table which contains 2 columns date_picked_begin and date_picked and there will be multiple rows which contain a date in each. The following query selects all rows with a date_col value from within the last 30 days: . DATE_ADD, DATE_SUB, TIMESTAMPADD. If you want the difference between just two times like '11:10:00' minus '10:20:00' then use select. You should use TIMESTAMPDIFF () to achieve that. The function counts whole elapsed units based on UTC with a DAY being 86400 seconds. SQL SELECT DATEDIFF (end_time, start_time) as `difference` FROM timeattendance WHERE timeattendance_id = '1484' start_time = 2012-01-01 12:00:00 end_time = 2012-01-02 13:00:00. 3. One alternative would be to define a function (MySQL stored program) that will calculate that difference. 6. One expression may be a date and the other a datetime. 01 sec) Share. 097332 trigger_time = 2021-10-10 14:11:13. answered Feb 4, 2018 at 5:33. select count (session_id), client_session_id. TIMESTAMPDIFF( HOUR , now( ) , FROM_UNIXTIME( 1364814799 ) ) will return negative and positive values, if you need to use x>this_timestamp. MySQL TIMESTAMPDIFF() Function - The DATE, DATETIME and TIMESTAMP datatypes in MySQL are used to store the date, date and time, time stamp values respectively. SELECT TIMESTAMPDIFF (MINUTE,'2022-02-01 10:30:27','2022-02-01 10:45:27') AS 'Difference in Minutes'; 0. I've tested TIMESTAMPDIFF on MySQL version 5. To find the difference between two datetime values, you can use TIMESTAMPDIFF (). And most of the time, this will require calculating the number of days between date values. numeric-expression. EXTRACT. SELECT TIMESTAMPDIFF (SECOND, '2010-01-01 10:10:20', '2010-01-01 10:45:59') AS SECONDDIFFERENCE; 1 Answer. to minutes select a= TIMESTAMPDIFF(SECOND,P_date1 ,P_date2). TRUNC(TIMESTAMPDIFF(seconds,min(BE. 返回值. Functions that take temporal arguments accept values with. com. MySQL :: MySQL 5. 000000) if empty ,TimeStampDiff(SECOND, Current Date, Current Timestamp) As SecondIt seems there were some bugs with that function, on old versions of MySQL 5. Returns the interval from datetime_expr2 to datetime_expr1. If thats. DATE_ADD () Add time values (intervals) to a date value. runTime,NOW()) > 20. 2, “Connector/NET Versions and Entity Framework Core Support” )I want to get the difference of a date and a datetime and display it as elapse time, example: 4days 7hr 8min 3sec. This is the query I am working on right [email protected], NOW()). -- Display TimeStampDiff in truncated Seconds and Microseconds-- TimeStampDiff will set the time to midnight (00:00:00. SELECT TIMESTAMPDIFF(SECOND, '2012-06-03 13:13:55', '2012-06-06 15:20:18') sec Now I need to convert this seconds in date time in SQL. ; Full example. DATEDIFF in Aurora MySQL only calculates differences in days. This is the very lengthy MySQL Date and Time manual page. select TIMESTAMPDIFF (SECOND, '2018-09-05 09:26:38', NOW ()); TIMESTAMPDIFF () accepts three. Thanks both of you (: –I want to calculate total Seconds between start time and end time. Use this link to know how to get accurate result using EXTRACT () and JULIAN_DAY () function. TIMESTAMPDIFF is from mysql db. TIMESTAMPDIFF() subtracts the dates it receives as arguments and it looks like it. . "timestamp" is a column in MYSQL which I hold a timstamp as such. After executing you can use it like this. What this allows you to do is pass in two TIMESTAMP or DATETIME values (or even DATE as MySQL will auto-convert) as well as the unit of time you want to base your difference on. A datetime expression. Use TIMESTAMPDIFF in MySQL: SELECT TIMESTAMPDIFF(SECOND,from,to); Example:If you average that directly, mysql will try to cast 04:01:56 to an int and end up with avg(04) instead. The functions in this section use a format string that is compatible with the MySQL date_parse and str_to_date functions. 2. But I don't know how to output that data in my foreach-loop below. For example, to calculate the difference between two dates in seconds, you could use the following query: SELECT TIMESTAMPDIFF(SECOND, '2021-01-01 00:00:00', '2021-01-02 00:00:00'); This would. It returns an integer as a result. MySQLで利用できる日付関数について確認します。. TIMESTAMPDIFF giving unexpected result. All you need is to execute the code below and then use the function. DATE_SUB () Subtract a time value (interval) from a date. MySQL convert timediff output to day, hour, minute, second format Ask Question Asked 12 years, 8 months ago Modified 4 years, 2 months ago Viewed 59k. Puede ser uno de los siguientes. The TIMESTAMPDIFF function allows its arguments to have mixed types e. user where createddate >= '2019-09-01' and createddate <= '2019-09-30'. Note: Since the the Unix Epoch date is based on UTC, when your MySQL server uses a timezone with an offset, using FROM_UNIXTIME(seconds - seconds_from_epoch), the resulting datetime will be off by that offset. . The function returns the result of subtracting the second argument from the third argument. In MySQL, how would I get a timestamp from, say 30 days ago? Something like: select now() - 30 The result should return a timestamp. The MySQL TIMESTAMPDIFF () function is used to find the difference between two date or DateTime expressions. Months aren't an issue in this case since subtracting two timestamps just use days and seconds but 'days' can be a problem. INT TIMESTAMPDIFF(unit, DATETIME datetime_expr1, DATETIME datetime_expr2) Returns datetime_expr2 − datetime_expr1, where datetime_expr1 and datetime_expr2 are date or datetime expressions. minutes = total_seconds DIV 60. To get the difference in seconds as we have done here, choose SECOND. Syntax : TIMESTAMPDIFF (unit,expr1,expr2). In his requirements, the start time is in the past, but the result is a positive time difference. Posted on Oct 19, 2021. Hisham. Behavior Type. status_timestamp < tmain. timeDiff) FROM ( SELECT Sec_to_time(Avg (Timestampdiff (second, `survival`, `lastupdate`))) as. You can use timestampdiff () to compute the difference between both datetime s in seconds, and then sec_to_time () to turn the result to a time: sec_to_time (timestampdiff (second, start_date, end_date)) Note that the time datatype stores values up to about 840 hours. user1864610. SELECT TIMESTAMPDIFF(MINUTE,'2022-02-01 10:30:27','2022-02-01 10:45:27') AS 'Difference in Minutes'; Result: +-----+ | Difference in Minutes | +-----+ | 15 |. SELECT TIMESTAMPDIFF(SECOND, NOW(), UTC_TIMESTAMP()); Add the result of the above to any unix timestamp if you want to compare it to MySQL DateTimes. edited Aug 21, 2018 at 17:38. As you see, it expects the parameters to be of type. . DATE () Extract the date part of a date or datetime expression. 01. An expression that returns a value of built-in CHAR or VARCHAR data type. And it should include hours, minutes etc means it must be the full difference like 10:25:30 - 10:15:25 = 605 seconds. description, is_active, (SELECT COUNT(r. @Enrico - Not true. TimeStamp2, t2. Apr 4, 2018 at 6:36. timeDiff), MINUTE(x. I use the same date in both date parameters. From the msdn, it returns the count (signed integer) of the specified datepart boundaries crossed between the specified startdate and enddate. Often times, if these events occur at the same time, too many seconds get added on. One month is considered elapsed when the calendar month has increased and the calendar day and time is equal or greater to the start. I'll try using TIMESTAMPDIFF(seconds) and ssee if that fixes things. n (Connector/NET 8. Use this link to know how to get accurate result using EXTRACT () and JULIAN_DAY () function. Follow answered Sep 9, 2019 at 15:57. So your query MUST BE next: SELECT *. SELECT TIMESTAMPDIFF(SECOND, '2020-05-06 01:00:00', '2020-05-07 02:00:00') as time_difference; In this SQL statement, TIMESTAMPDIFF is the function. These functions add units of the interval specified by the function name to a date, a date with time or a string-encoded date / date with time. This means that multiple references to a function. 3. 13. mysql 날짜 차이 가져오기 (datediff, timestampdiff 함수) 설명 mysql에서 두 날짜간의 차이를 가져올 때 사용하는 함수가 두 가지가 있습니다. Combine SUB_DATE AND TIMEDIFF to substract 1 hour in mysql. You can use the DATE () function to extract the date portion of the timestamp: SELECT * FROM table WHERE DATE (timestamp) = '2012-05-25'. Example: As an example, if timestamp A is 14:00 on Friday and timestamp B is 14:01 on Tuesday, the raw TIMESTAMPDIFF is. 1 Answer. UNIT can be SECOND. datediff() not ignoring time. The schema is SYSIBM. 0), 1) AS "Worked Hours" FROM `db_foo` WHERE matriculation='X' AND date='2017-yy-yy'; which would return. minDt, tbl. DATE_ADD () Add time values (intervals) to a date value. You can use ABS () on the results of some Date and Time Functions, such as DATEDIFF, or on the difference between two TO_SECONDS () calls. Since you're working with a known set of units, you could use a CASE statement to achieve this. ThanksBased on the format string ‘%d, %m, %Y’, the STR_TO_DATE() function scans the ‘21,5,2013’ input string. . The unit argument can be MICROSECOND , SECOND , MINUTE , HOUR , DAY , WEEK , MONTH , QUARTER , or YEAR . Discussion: To calculate the difference between the timestamps in MySQL, use the TIMESTAMPDIFF (unit, start, end) function. As an entirely different approach, you could get the difference in seconds, and convert to TIME datatype. Your first answer. 1. SELECT * FROM table WHERE TIMESTAMPDIFF (MINUTE,timestamp,NOW ()) AS thisisit. Seems to me you are looking for the amount of seconds passed since the last_attack. SELECT ROUND ( (UNIX_TIMESTAMP () - UNIX_TIMESTAMP (datetime_col)) / 60) That is returning the seconds between both time stamps. How can i store the return value from the timestampdiff function. DATE () Extract the date part of a date or datetime expression. If I change the second column statement (the one on the 8th) to TIMESTAMPDIFF(SECOND, "2021-11-08 01:59:59-04:00", "2021-11-08 01:00:01-06:00") (only changing the offset) then MySQL's answer changes to 3602. MySQL LAST_DAY Function Examples.