Let us walk through them quickly: To calculate the difference between dates in days – SELECT DATEDIFF (`DATE-A`, `DATE-B`) FROM `TABLE`. The unit for interval is given by the unit argument, which should be one of the following values: MICROSECOND, SECOND, MINUTE, HOUR, DAY, WEEK, MONTH, QUARTER, or YEAR. . In Sybase ASE you can use DATEDIFF function to get the difference between two datetime. By default, MySQL TIME fields allow a time range of '-838:59:59' to '838:59:59'. userid,cb_users. The function counts whole elapsed units based on UTC with a DAY being 86400 seconds. You can just subtract datetimes and it will return the value: select (now () - interval 2 day) - (now () - interval 5 day); The result isn't a datetime (it's some decimal coded date -- 3000000 for three days in this case), but it isn't correct to say consider a datetime and an interval as the same datatype. numeric-expression. net. TIMESTAMPDIFF() : This function in MySQL is used to return a value after subtracting a DateTime expression from another. MySQL. The TIMESTAMPDIFF function returns an estimated number of intervals of the type defined by the first argument, based on the difference between two timestamps. 1. You could use the microsecond unit and divide by 1000 - MySQL doesn't appear to support milliseconds. The PROCESS_START_DATE column in query have data which contains date and time. Behavior Type. minDt, tbl. birth_date FROMmysql timestampdiff() 函数返回两个日期时间之间的时间间隔。. We can use the following syntax to create an interval value: INTERVAL expr unit. 001) Javascript timestamps, for example, are represented in milliseconds since the Unix epoch. DATE_ADD () Add time values (intervals) to a date value. 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. Follow. elapse)/60 as diff from( SELECT c1. One year has 365 days. . 6. 1) Last updated on APRIL 12, 2021. 1、此函数的参数具有混合类型，比如 begin 是DATE值，end 可以是 datetime 值。. SELECT id, job, TIMEDIFF(end_date,. 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. Use this link to know how to get accurate result using EXTRACT () and JULIAN_DAY () function. timestampdiff() 语法 这是 mysql timestampdiff() 函数的语法：I want to update the datetime round to 15 minutes in a MYSQL database table. I have my SQL statement like this trying to get the difference in 2 timestamps greater than 10 minutes. That will give you the average differences for each distinct value of col1. MySQL - Comparing Two Negative Time Values. About;. MySQL where datediff equals to some value. timestamp off by minutes. select count (session_id), client_session_id. And when specifying second instead of microsecond it. . 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". A record is inserted for each print and contains the store ID and timeStamp. n+MySQL8. One expression may be a date and the other a datetime; a date. This method returns the difference between two dates formatted as hours:minutes:seconds. It supports event scheduling by calculating new times based on time. I'm writing an SQL file and giving it to mysql < . TIMESTAMPDIFF is from mysql db. To understand the MySQL convert timediff output to day, hour, minute, and second format, you need to use CONCAT () from MySQL. On the other hand, if you want to build groups of consecutive records that have less than 1 minute gap in between, this is a gaps and islands problem. 4, the instances are limited in which a fractional seconds part is permitted in temporal values. Net write timeout (in seconds): Seconds to wait for data from the server before aborting the connection. It only returns the result in days. I am using below code for today and database date. Since TIMESTAMP in mysql is stored as a 32bit value representing the time interval from 1970-jan-1 0:00:00 in seconds, I assumed that using minus (-) operator on TIMESTAMP values would give the difference of these values in seconds. Practice. TIMESTAMPDIFF() function MySQL the TIMESTAMPDIFF() returns a value after subtracting a datetime expression from another. A date value is treated as a datetime with a default time part '00:00:00'. 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. mysql> SELECT TIMESTAMPDIFF(SECOND, '2018-10-17 11:51:55', '2018-10-17 11:51:58'); The following is the output in seconds. Requires 3 arguments. 6 Fractional Seconds in Time Values - MySQL 5. last_name, b. The date is in CURRENT TIME STAMP format, just to clear that up. timestampdiff(unit,datetime_expr1,datetime_expr2)中unit选项 FRAC_SECOND。表示间隔是毫秒 SECOND。秒 MINUTE。分钟 HOUR。小时 DAY。天 WEEK。星期 MONTH。月 QUARTER。季度 YEAR。年. Description. I tried to look for a solution with annotate, but there is no support for aggregate functions in either mysql nor postgres. first_name, c. 1 Answer. 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. TIMESTAMPDIFF. SELECT TIMESTAMPDIFF. YYYY-MM-DD HH:MM:SS. So subtracting a TIMESTAMP WITH TIME ZONE that is 5 am Eastern from a TIMESTAMP WITH TIME ZONE that is 2 am Pacific will result in an interval of 0. SELECT TIMESTAMPDIFF (YEAR, YOUR_COLUMN, CURDATE()) FROM YOUR_TABLE AS AGE Check the demo image below. name, f. The unit argument can be MICROSECOND, SECOND, MINUTE, HOUR, DAY, WEEK, MONTH, QUARTER, or YEAR. g. select(sum(df. 0. I want to make a function call that hase efect in SQLite like TIMEDIFF in MySQL. Actually i need to get the time difference between date_time field to now() so i used this query SELECT `date_time`,now(),timediff(`. 1. Before MySQL 5. createDate) minDt, max(i. TIMESTAMPDIFF(HOUR, '2018-06-01 00:00:00', '2018-06-01 12:00:00') Share. In general, it is required that the types of all the columns are in agreement. Stack Overflow. I would have just commented this, but just joined. The unit for the result (an integer) is given by the unit argument. The two expressions don’t have to be of the same type. For example: Check in date is 12-04-2010 Check out date 15-04-2010 The day difference would be 3. 0. Unix time, leap seconds, and converting Unix time to a dateMySQL interval is an operator, which is based on the binary search algorithm to search the items and returns the value from 0 to N. Example: As an example, if timestamp A is 14:00 on Friday and timestamp B is 14:01 on Tuesday, the raw TIMESTAMPDIFF is. This function in MySQL is used to return a value after subtracting a DateTime expression from another. com. 5 hours). e. 11. 1. TIMESTAMPDIFF not working on mysql query in codeigniter. The supported range is '1000-01-01 00:00:00' to '9999-12-31 23:59:59'. Of course, raw seconds makes it more difficult to compute days, weeks, or even years, but you will have a more. g. createDate), AVG(TIMESTAMPDIFF(SECOND, tbl. You can concatenate the output of curdate() to a string containing the specific time you want to subtract from: select timestampdiff( MINUTE, your_column, concat( curdate(), ' 12:00:00' )) from your_table; 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 Introduction. Calculates the difference between two date, time, or timestamp expressions based on the specified date or time part. Aurora MySQL also supports DATE_SUB for subtracting date parts from a date time expression. 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. answered Oct 2, 2017 at 13:25. 13. Follow. Reading time: 2 minutes. 53), where Sunday is the first. I have currently logged more than 900 hours of work this year though, and I want the result of my query to reflect this. Timestampdiff () function takes three arguments. Sorted by: 4. If you have a variable holding another UNIX_TIMESTAMP, you can get the difference and turn seconds to minutes (and round/truncate the result if needed): SELECT ROUND ( (UNIX_TIMESTAMP ()-1506947452) / 60, 0) Share. When you insert a TIMESTAMP value into a table, MySQL. To calculate the difference between two dates in seconds, we can make use of this function along with the UNIX_TIMESTAMP function. MySQL timestampdiff of records on same column. So your query MUST BE next: SELECT *. One solution you could use is extra in django queryset. . transaction_pk and tsub. Is it possible to store in MySQL DATETIME or other equivalent datatype with a precision of nanoseconds? As per fractional-seconds documentation it looks to me not possible (max 6 digit sub second precision = 1 usec) but maybe there is another datatype or function that can solve this problem?. SELECT current_timestamp() => 2018-01-18 12:05:34 which can be converted to seconds timestamp as. The avg function works like any other aggregate function, and will respond to group by. select id, CAST (datediff (curdate (),birth_date) / 365 as int) from student. Convert from epoch to date. Timestampdiff () function takes three arguments. Param1, t2. SELECT f. SUBTIME () is valuable for making precise adjustments to time values, such as subtracting seconds, minutes, or hours. 6 Reference Manual. transaction_pk = tmain. Month-difference between any given two dates: Have a look at the TIMESTAMPDIFF () function in MySQL. TIMESTAMPDIFF. Here are the first 25 rows of. If you divide until day, you are fine (every single day every year has the same amount of seconds). This function calculates the difference between two datetimes in a specified unit (such as seconds, minutes, hours, days, etc. – Akina. 注意. FROM_UNIXTIME doesn't work with negative timestamps. , day, month, etc). answered Feb 4, 2018 at 5:33. 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 ). 0. status_timestamp < tmain. d H:i:s"). Improve this answer. edited Aug 21, 2018 at 17:38. 1 why does mysql timediff function give wrong output? Load 7 more related questions Show. @Enrico - Not true. mysql. Share. 0. select t. 000000) seconds + (minutes+(hours+((days+(months*30)+(years*365))*24))*60 )*60:I have a MySQL table with two datetime columns. . 0. If start is greater than end the result is negative. To avoid having to repeat yourself, you can wrap the calculation: SELECT HOUR(x. when MySQL stores a value into a column of any temporal data type, it discards any fractional part and does not store it. However, two of them only store part of a date: TIME stores the time, and YEAR stores the year. SELECT FROM_UNIXTIME (epoch timestamp, optional output format) The default output is YYYY-MM-DD HH:MM:SS. Connect and share knowledge within a single location that is structured and easy to search. I want to create one new generated column that contains time difference of the two datetime columns. MySQL TIMESTAMPDIFF function Example. The Try-MySQL Editor at w3schools. SECONDS is not a valid unit. MySQL TIMESTAMPDIFF() Function - The DATE, DATETIME and TIMESTAMP datatypes in MySQL are used to store the date, date and time, time stamp values respectively. Modified 9 years ago. 0. So I used TIMESTAMPDIFF in seconds. SELECT start, end, TIMESTAMPDIFF(HOUR, `start`, `end`) FROM table1 WHERE start >="2018-01-01" AND ende <= "2018-12-31. i. 1. How can i store the return value from the timestampdiff function. Example. This will provide you a whole number: SELECT TIMESTAMPDIFF (WEEK, date1, date2) AS weeks; To include a fraction for days, use: SELECT TIMESTAMPDIFF (DAY, date1, date2) / 7 AS weeks_days; or a fraction for seconds, use: SELECT TIMESTAMPDIFF (SECOND, date1, date2) / 604800 AS weeks_secs; as 604800 is 7 *. For SQLITE, the condition should be For SQLITE, the condition should be '(JulianDay(values. datetime_expr1. MySQL SUBTIME () subtracts one datetime value from another. select timestamp ('2021-01-02 03:04:05')-0;. 引数は、結果を表す単位と、差異を取る 2. One alternative would be to define a function (MySQL stored program) that will calculate that difference. frequency. For second, the maximum difference is 68 years, 19 days, 3 hours, 14 minutes and 7 seconds. 2. mysql> SELECT something FROM tbl_name-> WHERE DATE_SUB(CURDATE(),INTERVAL 30 DAY) <= date_col;. Improve this answer. 3. mysql> SELECT something FROM tbl_name-> WHERE DATE_SUB(CURDATE(),INTERVAL 30 DAY) <= date_col; The query also selects rows with dates that lie in the future. The following table, based on the MySQL manual, describes the format specifiers:. We can define a Unix timestamp as the number of seconds that have passed since ‘1970-01-01 00:00:00’UTC. 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 would recommend you to use the query like this: SELECT DATE(tbl. thanks for your input. SQL Server : -- Get difference in days SELECT DATEDIFF ( dd, '2022-09-01', '2022-09-05'); # 4. imei = 7466 and hour (timediff (f2. 01. DATE_FORMAT () Format date as specified. DATE_FORMAT () Format date as specified. Alternative for DATEDIFF. If you want to have the difference between two DATETIME values, use TIMESTAMPDIFF:. email FROM cb_sessions LEFT JOIN (cb_user. DATE_ADD () enhances SQL queries by allowing dynamic calculations in date-related WHERE or HAVING clauses, enabling more precise filtering. MySQL MySQLi Database. returns a Unix timestamp in seconds since '1970- 01-01 00:00:00' UTC as an unsigned integer if no arguments are passed with UNIT_TIMESTAMP(). @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. 1. To determine how many years old each of your pets is, use the TIMESTAMPDIFF () function. Here is an example that uses date functions. id AND r. For a complete list of built-in date and time functions, check the Flink documentation. In this case MySQL ignores that index: example (check how many fields are processed when you are use DATE_ADD on the field and how many fields are processed when you are use DATE_SUB on the constant (like NOW()). MySQL INSERT INTO SELECT Query with Examples. Sybase ASE to MariaDB Migration. If you are experiencing this bug, a good alternative is to use TIMESTAMPDIFF and then get the sum of the column you create. To get the difference in seconds as we have done here, choose SECOND. Return values from temporal functions include fractional seconds as appropriate. You don't need to perform annotate or aggregate if you need difference for all the records. TIMESTAMPDIFF. MySQL retrieves and displays DATETIME values in 'YYYY-MM-DD hh:mm:ss' format. A little explanation: 7 days = 168 hours = 10 080 minutes = 604 800 seconds. 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. The function subtracts one datetime value from the other in the specified unit. ^^^ You are performing a UNION between two tables, and in the first half of the union you have the sum of integers for the diff column while in the second half you have a string. , begin is a DATE value and end is a DATETIME value. MySQL TIMEDIFF () returns the differences between two time or datetime expressions. SET @date1 = '2010-10-10 00:00:00', @date2 = '2010-10-10 23:59:59'; SELECT DATEDIFF(@date1, @date2) AS 'DATEDIFF', TIMESTAMPDIFF(day, @date1,. 1. If your data is stored in the table in one time zone (i. createDate) as createDate, min(i. 6. According to the documentation, the first argument can be any of the following: MICROSECOND SECOND MINUTE HOUR DAY WEEK MONTH QUARTER YEAR2 Answers. Sorted by: 3. However, what I get is NULL, instead of the expected INT that represents seconds between two times. end_date - INTERVAL (q. The DATEDIFF() function returns the time between two dates. Q&A for work. so actually you are doing. 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. 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. First, it attempts to find a match for the %d format specifier, which is a day of the month (01…31), in the input string. Tham số unit được sử dụng để định nghĩa đơn vị của giá trị được trả về. If you get a much shorter list of. Then you can convert seconds to minutes, or days, or months, or etc within your case statement, depending where they fall in the range. The MySQL TIMESTAMPDIFF () function is used to find the difference between two date or DateTime expressions. And most of the time, this will require calculating the number of days between date values. Is it possible?FROM_UNIXTIME() and NOW() return DATETIME values, not timestamps (a timestamp is a number of seconds, it doesn't depend on timezones). 2. e . I made this: select strftime('%s','2012-01-01 12:00:00') - strftime('%s','2004-01-01 02:34:56') but this is just. Functions that return the current date or time each are evaluated only once per query at the start of query execution. You can see this with e. Learn more about TeamsReturns. 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. walter. 0. 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". 6. MySQL 常常会接受格式不正确的日期和时间值。. Returns datetime_expr2 - datetime_expr1, where datetime_expr1 and datetime_expr2 are date or datetime expressions. The result returned by TIMEDIFF() is limited to the range allowed for TIME values. About; Products For Teams; Stack Overflow. Simple but elegant. sql console application and it supposed to show it as requested. rtcdatetime field and current UTC: TIMESTAMPDIFF (SECOND, rcv. Viewed 31 times. I would recommend instead converting the time differences to minutes and displaying the total number of hours as a decimal number, rather than a time: SELECT ROUND (SUM (TIMESTAMPDIFF (MINUTE, Initial, Final) / 60. 4 Answers. Below. TIMESTAMPDIFF. MySQL uses the TIMESTAMPDIFF function to calculate the difference between two dates or datetimes: SELECT TIMESTAMPDIFF(unit, startdate, enddate) FROM table_name; Where unit represents the unit of time, like YEAR, QUARTER, MONTH, WEEK, DAY, HOUR, MINUTE, or SECOND. They are: Unit type, datetime expressions, and datetime expression2. At least these are real and true seconds, unlike the MySQL DATEDIFF where they are. It only returns the result in days. MySQL SUBTIME() function. Your query string would look like this:Your problem is that TIMESTAMPDIFF effectively first truncates the values to the indicated precision (e. According to the documentation, the first argument can be any of the following: MICROSECOND SECOND MINUTE HOUR DAY WEEK MONTH QUARTER YEAR 2 Answers. DATEADD in Aurora MySQL only adds full days to a datetime value. COALESCE (TIMESTAMPDIFF (SECOND,time_in1,time_out1),0) + COALESCE (TIMESTAMPDIFF (SECOND,time_in2, time_out2),0) This works if you want to use zero. Have tried this but only gives me the difference of the date part:I am using timestampdiff in derby db to retrieve the time difference between 2 time: startdate, and enddate. 2 Answers. This method returns the difference between two dates in the units supplied as the first parameter. MICROSEGUNDO,. . As an example, if we entirely ignore any "seconds" portion of the datetime/timestamps, and work with whole minutes, something like this: NOTE: this is not fully tested. The value returned is an INTEGER, the number of these intervals between the two timestamps. 日付の「比較」「加算」「差分」「抽出」など利用例を交えて解説します。. 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. jstu. 045 enddate = 2010-02-23 03:45:39. Note: You need to pass two date / datetime. Solution is using select timestampdiff(DAY, '2016-04-13 11:00:01', '2016-04-14 11:00:00'); (note the opposite. This function takes three arguments: the unit of time you want to measure the difference in (e. The timestamp difference returns the difference between two dates in seconds. So, I would like to group them by gateway ID and have the value in hours, minutes and seconds. user where createddate >= '2019-09-01' and createddate <= '2019-09-30'. We can simply aggregate over each player and sum the diff of the starting and ending timetamps, using a CASE expression to replace the (somewhat odd) zero timestamp with the current. 3. ), the start timestamp, and the end timestamp. Yes, because the timestamp handles the leap years. 1. I am using the below query to find the time difference in minutes. 0 TIMESTAMPDIFF giving unexpected result. MySQL DATEDIFF: Calculate Days Between Two Dates. Share. MySQL Date Functions. . types. 3 is really old -- you really should update to a more recent version : You'll get more support ; Lots of bug fixes; New features and enhancements; And, probably, better performancesThat's because from_unixtime (emphasis mine):. 6 Fractional Seconds in Time Values - MySQL 5. Unable to use 'where' when using 'timestampdiff' in mySQL. For example, if you wanted to calculate the difference between two timestamps in seconds, you would use the following query: SELECT TIMESTAMPDIFF (SECOND, start_timestamp. Connect and share knowledge within a single location that is structured and easy to search. Even if there where, seem like nice trade off an extra column for not having to calculate the diff for each row on each query! Oh, and you can just retrieve what you want like this: Timer. 59) %s: Seconds (00. About;. SELECT ABS (TIMESTAMPDIFF (SECOND, start_time, end_time)). Otherwise I will have to code that in PHP. ) operation (opens new. We're using SQL Server 2008 R2 and the conversion failed when time is more than 24:. MariaDB :addYears, addQuarters, addMonths, addWeeks, addDays, addHours, addMinutes, addSeconds, addMilliseconds, addMicroseconds, addNanoseconds. 5 日付の計算. 引数は、結果を表す単位と、差異を取る 2. by Nathan Sebhastian. . result IS NULL) AS nr_s, (SELECT COUNT(r. 1 year and 2 months. Improve this answer. UTC) and you want it in another time zone then use: CAST ( date_value AS TIMESTAMP ) to convert it from a DATE data type to a TIMESTAMP data type. 6 timestampdiff problem with return result. This is incorrect because this would only work correctly if the string represents a valid datetime. 7 Reference Manual :: 12. This function computes the time difference between the input timestamp and '1970-01-01 00:00:00', providing the result in seconds. 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. To calculate the difference between the timestamps in MySQL, use the TIMESTAMPDIFF (unit, start, end) function. And it should include hours, minutes etc means it must be the full difference like 10:25:30 - 10:15:25 = 605 seconds. 7 中提供的所有 日期和时间函数 。. 私の実行系では TO_SECONDS() と同じ結果が得られました; Conclusion. TIMESTAMPDIFF(MINUTE,T. Like for example the conversion value to Hours and Minutes is 4 Hours and 30 Minutes. timeDiff) FROM ( SELECT Sec_to_time(Avg (Timestampdiff (second, `survival`, `lastupdate`))) as. Functions that take temporal arguments accept values with fractional seconds. Return the current time. 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. 000Z','2020/01/28. 3. SELECT TIMESTAMPDIFF(HOUR, UTC_TIMESTAMP(), NOW()); If the server's timezone is PST this will return -8. Apparently the UTC_TIMESTAMP (). Similar to Timo Kähkönen's answer, I've used TIMESTAMPDIFF to determine if a date is valid like ISDATE does. timeDiff) FROM ( SELECT Sec_to_time(Avg (Timestampdiff (second,. 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. 3. 3. 8,597 2 16 27. You may use TIMESTAMPDIFF as the answer below shows, but you should avoid storing your timestamps as strings in the database. By default, MySQL TIME fields allow a time range of '-838:59:59' to '838:59:59'. You can also phrase this without a function on one of the columns by just sing date arithmetic: where c2 <= c1 + interval 30 minute; The advantage of avoiding a function is that MySQL can -- in some circumstances -- take advantage of an index on one of the columns. I am using below code for today and database date. when MySQL stores a value into a column of any temporal data type, it discards any fractional part and does not store it. SELECT TIMESTAMPDIFF(HOUR, '2010-11-29 13:13:55', '2010-11-29 13:16:55') as newtable; | newtable | 7 1 row in set (0. The result is now a DateTime value in order to return the seconds part. Date or DateTime could be one of them. Syntax : TIMESTAMPDIFF (unit,expr1,expr2). Definition:– SUBTIME() function is built-in MySQL function, which is commonly used to subtract a time value from a time or datetime value or exp. datetime_expr1 and datetime_expr2 must be of the DATE or DATETIME type. I also tried this, but it gave a difference of 0 seconds: SELECT DATEDIFF (CURDATE (), upload_date) AS intval FROM is_meeting_files LIMIT 0,5;MySQL TIMEDIFF () function. I have my SQL statement like this trying to get the difference in 2 timestamps greater than 10 minutes. SELECT TIMEDIFF (end_time,start_time) AS "total" FROM `metrics`; meaning 116 hours, 12 minutes and 10 seconds. 0 and later) An implementation of . 1 Answer. answered Feb 4, 2018 at 5:33. Subtracts the 2nd argument from the 1st (date1 − date2). My guess - he used EXTRACT (SECONDS FROM.