4. MySQL TIMESTAMPADD () adds time value with a date or datetime value. Requires 3 arguments. P1 and P2 should be in the format YYMM or YYYYMM. select t. Improve this question. 日付関数 (比較, 加算, 差分, 抽出)の使い方. Add a comment. 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. So, I would like to group them by gateway ID and have the value in hours, minutes and seconds. If you want to diff an earlier start time against a later end time, then the former should appear before the latter in the call to TIMESTAMPDIFF. About; Products For Teams. 4) on a H2 database. You need to pass in the two date/datetime values, as well as the unit to use in determining the difference (e. +1 For keeping the query sargable and not wrapping the timestamp column within a function for comparison. If it helps someone who knows MySQL answer, SQL Server isn't "rounding up"; SQL Server just counts the number of day boundaries between the two times. SELECT * FROM tableName WHERE now () - interval 10 minute < stored_timestamp. SELECT * FROM tableName WHERE TIMESTAMPDIFF (MINUTE,timestamp,NOW ()) < 10. 0 (very out of date). 3 is really old -- you really should update to a more recent version : You'll get more support ; Lots of bug fixes; New features and enhancements; And,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 performances1 Answer. id WHERE. IP WHERE composer_sessions. 下面说明了 TIMESTAMPDIFF 函数的语法。. datetime difference shows wrong values in mysql. Clearly it is paying attention to the offset, and in this situation, it is using it correctly. FROM_UNIXTIME (ms * 0. In MySql the syntax of DATEDIFF is different: DATEDIFF (date1, date2) and returns the difference date1 - date2 in days. mysql timestampdiff() ignoring weekends. expr1 and expr2 are date or date-and-time expressions. TIMESTAMPDIFF (interval，datetime1，datetime2. HTH. because the diff from 08/18 to 12/08 is 3 until the 12/17 it return 3 after it will return you 4. cancel_reason_id is. It accepts two TIMESTAMP or DATETIME values (DATE values will auto-convert in MySQL) as well as the unit of time we want to. Follow. I am facing a little confusion because of CURRENT_DATE value and CURRENT_TIMESTAMP value shows different date on MySQL. Oracle also dont support NOW() function in mysql. dtStart) = date (f. Use TIMESTAMPDIFF function to calculate the minute difference between the login_datetime and MySQL begin_datetime '1000-01-01 00:00:00'; Divide the calculated minute difference by 15In MySQL, the way to do that is to employ the DATEDIFF() function. CREATE TABLE IF NOT EXISTS `login_user` ( `idx` INT(11) UNSIGNED NOT NULL AUTO_INCREMENT, `client_id` INT(11) UNSIGNED NOT NULL DEFAULT '0', `login` DATETIME NULL, `Logout` DATETIME NULL, `Time` INT(11) AS (TIMESTAMPDIFF(second,`login`,`Logout`)), PRIMARY KEY (`idx`) ). 25. Share. The correct way of extracting miliseconds from a timestamp value on PostgreSQL accordingly to current documentation is: SELECT date_part ('milliseconds', current_timestamp); --OR SELECT EXTRACT (MILLISECONDS FROM current_timestamp); with returns: The seconds field, including fractional parts, multiplied. 1. Sintaxis: TIMESTAMPDIFF(unit,expr1,expr2) Parámetros: Aceptará tres parámetros. Subtracts the 2nd argument from the 1st (date1 − date2). MySQL convert timediff output to day, hour, minute, second format. SELECT * FROM foo WHERE is_relevant = true ORDER BY ABS(TIMESTAMPDIFF(SECOND, `foo`. end) as elapse from c1) dfmysql 날짜 차이 가져오기 (datediff, timestampdiff 함수) 설명 mysql에서 두 날짜간의 차이를 가져올 때 사용하는 함수가 두 가지가 있습니다. Parameter 3 - End Date or Datetime Values. 7 Reference Manual :: 12. session_ID = tracking. Look at the query again. Elapsed Time Between Two Dates for specified time range. La versión SYSFUN de la función TIMESTAMPDIFF continúa estando disponible. Thus, for the following data:. timestamp_end), TIME (a. Mysql TIMESTAMPDIFF function works like this. date_created, t. Instead, the result is 838:59:59, which makes sense because that is the limit. If you are comparing with another date object, it's not strictly necessary to wrap it with DATE as MySQL will cast it automatically: some_date_field > CONCAT_WS ('-', year, month, day) Share. 今回は、「現在の日付」と「誕生日」の差分から、その「年数」を取得. See sargable (See @MatBailie's comment. SELECT. Try adjusting your query to use modern join syntax, to say. 4. I need to get the number of days contained within a couple of dates on MySQL. Connect and share knowledge within a single location that is structured and easy to search. start,c1. The function counts whole elapsed units based on UTC with a DAY being 86400 seconds. ; Second, because the comma (,). The column name will be literally the function string, something like. MySQL is ideal for both small and large applications. – Ergest Basha. Cara penyelesaiannya juga sama. [EDIT]Like this: SELECT Count(*) as "Count", CASE WHEN TIMESTAMPDIFF(DAY, scheduling_manualapproval. id asc I receive an error: check the manual that corresponds to your MySQL server version for the right syntax to use near 'FROM statistic a INNER JOIN statistic b ON b. 在mysql中，将日期转换为毫秒是一项常见的任务。mysql没有一个单独的函数来完成此任务，但可以使用几种方法来实现目标。在这篇文章中，我们将讨论一些将日期转换为毫秒的方法。 阅读更多：mysql 教程. mysql. *, timestampdiff (minute, start_time, end_time) as minutes from t;If the business would like to round each login_date value to its nearest 15 minute interval, we could use the following logics to achieve it. This is incorrect because this would only work correctly if the string represents a valid datetime. Here is on way to solve it using window functions (available in MySQL 8. All entity classes a transformed into these Q-files and now we are able to execute queries like: public TestSuite quer. 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()). 이 외에도 차이를 연, 분기, 월, 주, 일, 시, 분, 초를 지정하여 가져올 때 사용하는 함수가 TIMESTAMPDIFF. Just make the second argument '2015-01-01' and as long as your EndDate is good, it should work. This is because the UNIX_TIMESTAMP () function fails for DATEs before 1970-01-01 (and for dates in the far future using 32 bit integers). Take a look at the code below - notice the 1 millisecond difference in the two returned values. So i want to use the same query to get the TIMESTAMPDIFF in a table in Oracle. MySql. dtStart, f. TIMESTAMPDIFF. About;. MySQL convert timediff output to day, hour, minute, second format. The TIMESTAMPDIFF function will then return the difference in the unit specified. SELECT Dog_Guid, start_time, end_time, TIMESTAMPDIFF (MINUTE, start_time, end_time) AS Duration from exam_answers where TIMESTAMPDIFF (MINUTE, start_time, end_time) > 0 order by duration desc limit 10. date_time_1 &. Share. TIMESTAMPDIFF giving unexpected result. The DATE_ADD function adds an interval to a DATE or DATETIME value. TIMESTAMPDIFF. Finally, you need this: SELECT id_user FROM send WHERE to_sent=1 AND (TIMESTAMPDIFF (DAY, sent_datetime, NOW ()) >= 1 OR sent_datetime IS NULL) GROUP BY id_user ORDER BY updated_datetime; Plus, this makes the accuracy in the difference to one day. After executing you can use it like this. All you need is to execute the code below and then use the function. approved_on, slot. If you divide until day, you are fine (every single day every year has the same amount of seconds). 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. elapse)/60 as diff from( SELECT c1. To get the 2 status codes into a single record, use a subquery to get the init records only and join it back to your table filtered saved:Teams. MySQL's TIMESTAMPDIFF () method is defined with the following syntax, accepting three required parameters: SELECT TIMESTAMPDIFF (unit, date_time_1, date_time_2); The parameters are: unit - The unit of the date and time measurement in seconds, minutes, hours, days, months, years, etc. The following question will answer your question: "can. timeDiff), SECOND(x. But I don't understand how to use it to collect differences within the table field. 1. 21. TIMESTAMPDIFF giving unexpected result. 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。. 24. So the function is returning the difference between the second and third parameters in the units defined by the first parameter. 13. TIMESTAMPDIFF (unit,datetime_expr1,datetime_expr2) Returns. This means that multiple references to a function. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. x -- here's an example : Erratic behaviour of TIMESTAMPDIFF() Note that MySQL 5. I am working on migrating functions from SQL Server 2000 to MySQL. If TIMESTAMPDIFF () returns NULL, we can find rough age by subtracting the current year from the year of birth. The argument order and syntax is also different. How can i store the return value from the timestampdiff function. I cannot figure out how to functional query in mysql, Can you give some information of how can achieve this with mysql query. Follow. SELECT TIMESTAMPDIFF(HOUR, UTC_TIMESTAMP(), NOW()); If the server's timezone is PST this will return -8. 39 running in a Podman container on my Linux laptop: both columns not null: COALESCE: 9613 vs IFNULL: 8673. How can I fix it? SELECT IF(TIMESTAMPDIFF(YEAR, '2017-10-13 16:57:27', NOW()) > 0, CONCAT( Stack Overflow. The TIMESTAMPDIFF function is supported by most major databases, including MySQL, PostgreSQL, and SQL Server. `time_column. The MySQL function to return the difference in seconds is TIMESTAMPDIFF and, indeed, SELECT TIMESTAMPDIFF (SECOND, '2016-04-12 13:06', '2016-05-12 16:08') returns the correct number of seconds. `time` IS NULL) THEN SET NEW. 0. I am using below code for today and database date. datetime_expr1 and datetime_expr2 must be of the DATE or DATETIME type. Ask Question Asked 7 years, 1 month ago. I want to get last 24 hours data from Mysql Database. 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. 따라서timestampdiff 함수는 날짜 차이에 대한 계산 방식은datetime2-datetime1의 차이입니다. To get the difference in seconds as we have done here, choose SECOND. Is there any way around this so the result of the query can go. time1: The first TIME or DATETIME value. 2. MySQL DATE_FORMAT () formats a date as specified in the argument. MICROSEGUNDO,. datetime) - JulianDay(students. MySQL query using alias to count certain years from 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". timestampdiff()：根据指定单位返回两个时间相减的时间差。 语法. 本記事では、mysqlを使用して加算・減算・時間差の算出といったsqlでの日付計算処理の使い方についてご紹介していきたいと思います。. Use this version: CONCAT ( TIMESTAMPDIFF (day, TIME_START, TIME_END), 'd ', MOD (TIMESTAMPDIFF (hour, TIME_START, TIME_END), 24), 'h ', MOD (TIMESTAMPDIFF (minute, TIME_START, TIME_END), 60), 'm' ) AS. This is the query I am working on right now. user_id WHERE t. Converting date/time string to unix timestamp in MySQL. 날짜 검색 mysql에서 날짜 범위를 검색하는 데는 크게 세 가지 방법이 있습니다. Here the later date is supplied last, and the earlier date first (backward from DATEDIFF()). 0. So, for example, the day difference between 2015-11-25 23:58:00 and 2015-11-25 23:59:00 is 0, as no boundaries are crossed. MySQL. , with an example. SELECT TIMESTAMPDIFF(hour, a. In any case, you want to take the difference in a smaller time unit and convert to days. Sorted by: 4. The STR_TO_DATE () function scans the input string to match the format string. Alternative for DATEDIFF. It is to be noted that two expressions must be the same type. TIMESTAMPDIFF() : Esta función en MySQL se usa para devolver un valor después de restar una expresión DateTime de otra. Now that we’ve established how to use MySQL’s time difference methods, let’s look at a real use case. SELECT * from test WHERE `TIMESTAMPDIFF(SECOND, x_time, y_time)` LIMIT 100000, 5000 Please note what the query will do before present any data. The following illustrates the syntax of the DATE_ADD function: DATE_ADD (start_date, INTERVAL expr unit); Code language: SQL (Structured Query Language) (sql) The DATE_ADD function takes two arguments: start_date is a starting. One expression may be a date and the other a datetime. MySQL is a widely used relational database management system (RDBMS). MySQL中两个Timestamp之间的秒差 在MySQL中，可以使用TIMESTAMPDIFF函数来计算两个Timestamp之间相差的秒数。 SELECT TIMESTAMPDIFF(SECOND,'2021-09-01 10:00:00', '2021-09-01 10:01:30') as total_seconds; 上述语句的执行结果为90，即两个Timestamp相差90秒。You can use the MySQL HOUR(), MINUTE() and SECOND() functions to break the time returned from SEC_TO_TIME into its components. Param2 FROM Table1 t1 LEFT JOIN Table2 t2 ON ABS(TIMESTAMPDIFF(SECOND,t1. for more on date functions MySQL documentation. The MySQL DATEDIFF function only considers the date portion of the datetime values, and returns an integer number of days difference. Solution is using select timestampdiff(DAY, '2016-04-13 11:00:01', '2016-04-14 11:00:00'); (note the opposite. 6. Sorted by: 3. This may happen easily for the day of birth of many living people. The values are then stored in their own columns named diff_year for years, diff_month for months, diff_week for weeks, etc. DATEADD in Aurora MySQL only adds full days to a datetime value. – axiacDATEDIFF (datepart, startdate, enddate) which can return the difference in years, months, days etc. 1 together with spring data (spring-data-jpa-2. To calculate the difference between two date/datetime expressions, use TIMESTAMPDIFF. Date or. First, the subquery in the FROM is unnecessary. 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. expresión-numérica. [EDIT] If you want "everything that is greater than 4" to just be a single group, then you have to transform the values 5, 6, 7, . Note that MySQL TIMESTAMPDIFF(month, date2, date1) function does not return exactly the same result, and you have to use an user-defined function if you need to fully emulate the Oracle MONTHS_BETWEEN function. 0. The TIMEDIFF () function calculates the difference between two TIME or DATETIME values. Syntax TIMEDIFF ( time1, time2) Parameter Values Technical Details Works in: From MySQL 4. Some people might also find it easier to read (oh, does timestamp diff. – AK47. Goal. `End_Date`, TIMESTAMPDIFF(HOUR, b. The TIMESTAMPDIFF () function's 2nd and 3d arguments are datetime expressions and the 2nd is subtracted from the 3d. TIMESTAMPDIFF (interval,datetime_expr1,datetime_expr2) 说明: 返回日期或日期时间表达式datetime_expr1 和datetime_expr2the 之间的整数差。. date_time 2011-04-25 17:22:41 2011-06-14 17:22:52. id=(a. 0. session_ID LEFT JOIN composer_sessions ON sessions. DATE () MySQL DATE () takes the date part out from a datetime expression. status = 1 GROUP BY t. What i would like to do is only count the hours that occur during the week, so lets say DATE1 is friday at 9am,. 9, spring-boot-2. Now, there’s the timestampdiff() function which will provide you with the needed capability to. TIMESTAMPDIFF(unit,datetime_expr1,datetime_expr2) Returns datetime_expr2 – datetime_expr1, where datetime_expr1 and datetime_expr2 are date or datetime expressions. Introduction. SELECT SEC_TO_TIME (TIMESTAMPDIFF (SECOND,`table`. modified) Reference:. I tried to look for a solution with annotate, but there is no support for aggregate functions in either mysql nor postgres. Mysql 5. mysql query compare dates, DATEDIFF not working. It supports time series analysis by allowing you to calculate. This function takes the difference between two dates and shows it in a date format yyyy-mm-dd. Usage and definition for TIMESTAMPDIFF function (Doc ID 2756136. In your case, it returns the hour difference between the two dates. +1 for to the point the stored timestamp is less than x minutes. 0 to 11. Stack Overflow Public questions & answers; Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Talent Build your employer brand ; Advertising Reach developers & technologists worldwide; Labs The future of collective knowledge sharing; About the companyThis is out by a factor of 38. numeric-expression. TIMESTAMPDIFF giving unexpected result. The MySQL TIMESTAMPDIFF () function is used to find the difference between two date or DateTime expressions. Have a look at the TIMESTAMPDIFF() function in MySQL. combining date and time columns for query in codeigniter. However. 1. Hot Network Questions I found out 6 years after my daughter got her car that I was the primary and not the co-signer. 0. In MySQL, you can use TIMESTAMPDIFF function. start, c1. created, NOW()) Here is an example that uses date functions. The syntax of TIMESTAMPDIFF is as follows: TIMESTAMPDIFF (unit, date_1, date_2)In SQL Server, you can use DATEDIFF function to get the datetime difference in specified units. timestampdiff语法：timestampdiff (interval,datetime1,datetime2)结果：返回（datetime2-datetime1）的时间差，结果单位由interval参数给出。. If you are experiencing this bug, a good alternative is to use TIMESTAMPDIFF and then get the sum of the column you create. Sorted by: 18. I have a column where I log all time entries of any event. transaction_date)) AS average FROM ( SELECT u. A value of 0 signifies that there. Applies to: Oracle Fusion CX Sales Cloud Service - Version 11. One expression may be a date and the other a datetime; a date. you can get TIMESTAMPDIFF (DAY) and then div by 365 for year and remainder greator than 30 then div by 30 (for average number of months) and the remainder will be days. 1 Answer. The Try-MySQL Editor at w3schools. fin,NEW. The TIMESTAMPDIFF () function returns the difference between two datetime expressions in years, months, days, hours, minutes, or seconds. MYSQL: select SEC_TO_TIME(TIMESTAMPDIFF(SECOND,now(),'2019-02-16 16:00:00')) from dual Jooq has been used recently,but I don't know how to use SEC_TO_TIME with jooq please help me DSL. 0. timestampdiff Description. I am not sure whether there is any inbuilt function for that or not, i think it can be done by applying simple mathematics. Try adding this expression in. 1. birth)) / 365. There are two columns ( t0 and t1) whose types are timestamp ( t0 = 2021-11-18 20:25:09 and t1 = 2021-11-18 20:36:41) I want to find t1 - t0 (expecting ~11 minutes or ~ 700seconds), but the result is 1132. 0. Subtracting timestamp. Definition and Usage. 단순히 일 차이를 가져올 때 사용하는 것이 DATEDIFF 함수입니다. 0. The purpose of the function is to quickly compute how many whole time units (its first argument) are between two dates (it returns an integer). mysql中的 timestampdiff() 函数，可以获取两个时间相减的差值，并以年，月，日或小时，分钟，秒数等为单进行展示，下面就来说一说这个 timestampdiff() 函数的用法。 mysql timestampdiff() 函数介绍. 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. 0. As one trivial example: 2016-02-16 22:00 to 2016-02-17 08:30 should return 150. MySQL TIMEDIFF() Function MySQL Functions. The second orders just those by remind_date. You can write your query like this: SELECT * FROM eventList WHERE date BETWEEN UNIX_TIMESTAMP ('2013/03/26') AND UNIX_TIMESTAMP ('2013/03/27 23:59:59'); When you don't specify the time, MySQL will assume 00:00:00 as the time for the given date. Using timestampdiff with query builder codeigniter. . . MySQL TIMESTAMPDIFF function is one of the Date methods, which is useful to find the interval difference between two dates or DateTime expressions. Syntax : TIMESTAMPDIFF(unit,datetime_expr1,datetime_expr2) Example : The following statement will return a value in months by subtracting 2009-05-18 from 2009-07-29. Weeks, quarters, and years follow from that. In MySQL 8+, you can use the LEAD window function to get the value from the next row (where next is defined as the row having the next higher requestId): SELECT *, SEC_TO_TIME(TIMESTAMPDIFF(SECOND, startdate, LEAD(startdate) OVER (ORDER BY requestId))) AS diff FROM mytableBecause of two reasons: MySQL's built-in functions UNIX_TIMESTAMP and FROM_UNIXTIME take the time zone stored in @@global. Based on the format string ‘%d, %m, %Y’, the STR_TO_DATE() function scans the ‘21,5,2013’ input string. I have two rows. In MySQL the closest equivalent is TIMESTAMPDIFF, but it works differently. By ordering DESC (descending) we are instructing MySQL to return. Now all we need to do is convert it into your format. 6 Answers. Except for the day, they all calculate correctly. 1) Last updated on APRIL 12, 2021. By default, MySQL TIME fields allow a time range of '-838:59:59' to '838:59:59'. Improve this answer. The MYSQL TIMESTAMPDIFF () function accepts two datetime or date expressions as parameters, calculates the difference between them and returns the result. Improve this answer. 0 [Release 1. EDIT The example abovee works only on mysql databases. Example: SET @to = CAST('2014-10-03 12:00:00' AS DATETIME); SET @from = CAST('2011-05-12 13:12:44' AS DATETIME); -- get the full years SELECT TIMESTAMPDIFF(YEAR, @from, @to); -- 3 -- get the months, without full years in. All this is doing is running a calculation on two fields in your data. 2022/11/26. Follow edited Apr 13, 2016 at 6:32. 0. début)/365) Here is my table and the result in the 'montant_annuel' column:TIMESTAMPDIFF(unit, datetime_expr1, datetime_expr2); Returns datetime_expr2 − datetime_expr1 , where datetime_expr1 and datetime_expr2 are date or datetime expressions. Teams. TIMESTAMPDIFF (DAY, '2011-12-10', '2011-12-20') will return 10. TIMEDIFF () is essential for time-based analysis by enabling you to measure the duration of events or actions. The DATE, DATETIME, and TIMESTAMP types are related. – Aks. DateDiffMonth (startDate, endDate) directly. Edit: From your comment, I now see you want to. 21. MySQL: TIMESTAMPDIFF() condition having no effect. 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. The TIMESTAMPDIFF () function will then return the difference in the unit specified. Some days have an extra second or two seconds depending on the year. 返回值. 2 Answers. Improve this answer. dtEnd) - UNIX. With the condition (WHERE columnname> CURRENT_TIMESTAMP - INTERVAL 24 HOUR), We can get last 24 hours data. 0. Add a comment. W3Schools offers free online tutorials, references and exercises in all the major languages of the web. 04 I created also a function, but without adding microseconds, because MySQL 5. So i want to use the same query to get the TIMESTAMPDIFF in a table in Oracle. If you want the result in hours you should use Timestampdiff. IP = composer_sessions. TIMESTAMPDIFF (SECOND, NOW (),q. Combine SUB_DATE AND TIMEDIFF to substract 1 hour in mysql. A full month needs to be completed from date to date. id = t. The PROCESS_START_DATE column in query have data which contains date and time. The difference is 25 (hours). 7 Date and Time Functions. TIME_TO_SEC (TIMEDIFF (endDate, startDate))/3600 as hours. 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. mysql timestampdiff() 函数返回两个日期/日期时间之间的时间间隔。But, I don't know how am I supposed to do it in MySQL, I found this article Count days between two dates, excluding weekends (MySQL only). The STR_TO_DATE () function may return a DATE , TIME, or DATETIME value based on the input and format strings. The following syntax works on MySQL 5. SELECT datedifference (date1,. If you are using timestamp, this could be the solution in MySQL using SQL. Second parameter would be the last login time, which is already in the database. One year has 365 days. 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. `Start_Date`, b. walter. That's already mapped in the most popular (and truly open source) EF Core provider, Pomelo. 24. 0. OP's approach worked in that case. You will be doing a full table scan; You are literally performing data subtraction on every rowIt is a bad idea to use some operations on the index field. Getting minute difference between two timestamps in mysql using TIMESTAMPDIFF. Connect and share knowledge within a single location that is structured and easy to search. If you want to read about CONVERT () and CAST () here is the link. MySQL timestampdiff function with examples is given below: 1. Noting Ollie Jones warning, I've tested TIMESTAMPDIFF on MySQL version 5. Documentation of MySQL tells that . Alternatively, you can use TIMEDIFF (ts1, ts2) and then convert the time result to seconds with TIME_TO_SEC (). tour_ID =. SELECT test_name, TIMESTAMPDIFF (MINUTE,start_time,end_time); You only use Backticks if the fieldname equal a Keyword from MySQL. Hopefully this gets you pointed in the right direction! Thanks for response Eric TIMEDIFF also gives me time difference. You should extract the YEAR from curdate () and subtract that. I have tried to used timestampdiff, but it takes three arguments. MySql version >=5. To calculate the difference between the timestamps in MySQL, use the TIMESTAMPDIFF (unit, start, end) function. Here is an example that uses date functions. g. TIMESTAMPDIFF() Return the difference of two datetime expressions, using the units specified TO_DAYS() Return the date argument converted to days TO_SECONDS() Return the date or datetime argument converted to seconds since Year 0 UNIX_TIMESTAMP() Return a Unix timestamp UTC_DATE() Return the current UTC date UTC_TIME() TIMESTAMPDIFF () is used in time series analysis to calculate the time intervals between data points.