select t. Let us walk through them quickly: To calculate the difference between dates in days – SELECT DATEDIFF (`DATE-A`, `DATE-B`) FROM `TABLE`. Because of two reasons: MySQL's built-in functions UNIX_TIMESTAMP and FROM_UNIXTIME take the time zone stored in @@global. The value is expected to be the result of subtracting two timestamps and converting the result to CHAR. It only returns the result in days. MySQL TIMESTAMPDIFF() Function - The DATE, DATETIME and TIMESTAMP datatypes in MySQL are used to store the date, date and time, time stamp values respectively. Please follow up in a Java newsgroup. name, f. Wrap TIMESTAMP() around your date string as sometimes MySQL doesn't interpret it as a date until you do, and you get weird results. 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. But from what i can see in the logs its more like that Drill Hands over the Function Call "TIMESTAMPDIFF" to the Oracle database. You want SECOND:. Note: Basically, you provide a number of seconds as an argument, and it will change it to a time value. answered Aug 21, 2018 at 15:15. The TIMESTAMP () function returns a datetime value based on a date or datetime value. Syntax : DATEDIFF ( datepart , startdate , enddate ) You should use TIMEDIFF() or TIMESTAMPDIFF() function. DATEDIFF() seconds with millisecond to float or decimal. MySQL INSERT INTO SELECT Query with Examples. If thats. SELECT TIMESTAMPDIFF (SECOND, start_time, end_time). Example 1 : Getting the differences between two specified time values where the time is specified in the format of YYYY-MM-DD HH-MM-SS. Default: 60; Record fetch size: Number of records to fetch at once. 2 MySQL datediff strange results. You can use TIMESTAMPDIFF function for getting Approximate difference between two timestamps. This means that multiple references to a function. 00000 is clearly outside the supported range of 00:00:00 -. SELECT current_timestamp() => 2018-01-18 12:05:34 which can be converted to seconds timestamp as. 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:. to minutes select a= TIMESTAMPDIFF(SECOND,P_date1 ,P_date2). MySQL Clauses DISTINCT, WHERE, ORDER BY, GROUP BY, HAVING. SELECT id, job, TIMEDIFF(end_date,. 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). result IS NULL) AS nr_s, (SELECT COUNT(r. The Try-MySQL Editor at w3schools. 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. Default: 10; Maximum idle connections: The total number of connections allowed to be idle at a given time. my approach : set unit as SECOND and then use SEC_TO_TIME. SELECT UNIX_TIMESTAMP (timestring) Time format: YYYY-MM-DD HH:MM:SS or YYMMDD or YYYYMMDD. NET Framework that is supported by Connector/NET (see Table 7. start,c1. The unit argument can be MICROSECOND , SECOND , MINUTE , HOUR , DAY , WEEK , MONTH , QUARTER , or YEAR . Here is an example that uses date functions. The value returned is an. They return the minute or second part of the value. 6 Fractional Seconds in Time Values - MySQL 5. DATEDIFF in Aurora MySQL only calculates differences in days. I have a column where I log all time entries of any event. MySQL Database: Restore Database. Requires 3 arguments. – Ihor Romanchenko. Here’s a quick rundown of the functions you can use in MySQL: ## #TIMESTAMPDIFF TIMESTAMPDIFF() returns the difference in the given unit. Syntax: TIMESTAMPDIFF(unit,datetime_expr1,datetime_expr2);. 097332 trigger_time = 2021-10-10 14:11:13. Clearly your system or JVM is not configured to use UTC time. SyntaxSubtracting timestamps in MySQL. e. 1. @Enrico - Not true. MySQL TIMEDIFF() Function MySQL Functions. Alternatively, you can use either of the functions TIMESTAMPDIFF() and UNIX_TIMESTAMP(), both of which return integers. id WHERE p. To get the difference in seconds as we have done here, choose SECOND . SELECT UNIX_TIMESTAMP(current_timestamp()) => 1516272429 To. So we could modify the previous example so that TIMESTAMPDIFF. 3. For example if the result is 490 seconds, since it is greater than 59 seconds but less than 3600 seconds, you can convert the value into minutes to return 8 minutes ago. SELECT id, Present, Date, Time, SEC_TO_TIME (TIMESTAMPDIFF. Here, exp. 0. MySQL TIMESTAMPADD () adds time value with a date or datetime value. The function returns the result of subtracting the second argument from the third argument. MySQL TIMESTAMPADD () 函数将指定的时间间隔 interval 加到一个日期时间值上并返回结果。. TIMESTAMPDIFF() : Esta función en MySQL se usa para devolver un valor después de restar una expresión DateTime de otra. = 1-- Query using TIMESTAMPDIFF() # Write your MySQL query statement below. I would recommend you to use the query like this: SELECT DATE(tbl. Some days have an extra second or two seconds depending on the year. thanks for your input. Use timestampdiff() to get the time difference, and curdate() to get today's date. which is why you have to time_to_sec,. 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. TIMESTAMPDIFF method only works with datetime format. MySQL DATEDIFF: Calculate Days Between Two Dates. TIMESTAMPDIFF() function MySQL the TIMESTAMPDIFF() returns a value after subtracting a datetime expression from another. If you want the difference between just two times like '11:10:00' minus '10:20:00' then use select TIME_TO_SEC('11:10:00')-TIME_TO_SEC('10:20:00') Discussion: To calculate the difference between the timestamps in MySQL, use the TIMESTAMPDIFF (unit, start, end) function. YEAR ('2015-01-01') returns 2015, which is not a valid date, which breaks timestampdiff () causing it to return NULL. datetime_expr1. This works for me: TIMESTAMPDIFF(SECOND, NOW(), '2019-09-09 18:52:00') Share. So now my question: I thought apache drill replaces the function "TIMSTAMPDIFF" at runtime. SELECT SEC_TO_TIME. Description. SQL query TIMESTAMPDIFF with php not working. Stack Overflow. 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。. Improve this answer. 0):To calculate the difference between two datetimes in MySQL, you can use the TIMESTAMPDIFF function. And you have Dates column with timestamps up to seconds level. timestamp,f. Just. So we could modify the previous example so that TIMESTAMPDIFF. MySQL LAST_DAY Function Examples. One year has 365 days. 1 called TimeStampDiff (abbreviated TSD here), you can easily get this value. Possible duplicate of Only show hours in MYSQL DATEDIFF – Sebastian Brosch. DATETIME: used for values that contain a date and time. Apr 4, 2018 at 6:36. Note that unit values can be different in SQL Server DATEDIFF and MariaDB TIMESTAMPDIFF. Conclusion. I am using the below query to find the time difference in minutes. If you divide until day, you are fine (every single day every year has the same amount of seconds). One expression may be a date and the other a datetime. Hisham. 1. timestamp_end), TIME (a. It returns an integer as a result. end, TIMESTAMPDIFF(MINUTE,c1. TIMESTAMPDIFF ( unit type, datetime expression1, datetime expression2); Unit is used to express the difference of datetime or date in days, months, etc. 6. end_date) which calculates the remaining seconds is straightforward and easy to understand. 1. That will give you the average differences for each distinct value of col1. select count (session_id), client_session_id. time_start) / 60 as diff_minutes. timestampdiff. I have seen this answer but it converts datetime into seconds and return time only, I want date as well. 1. The MySQL TIMESTAMPDIFF on the other hand can do a datetime second comparison: SELECT TIMESTAMPDIFF(SECOND,'2013-01-14 10:59:10', '2013-01-17 11:50:34'); # returns 262284 The result, 262284, is the real seconds between the two dates. All you need is to execute the code below and then use the function. types. datetime_expr1 and datetime_expr2 must be of the DATE or DATETIME type. For example, if we want to know the difference between two dates in seconds: SELECT id, job, TIMESTAMPDIFF(SECOND, start_date, end_date) AS runtime FROM example_table; This calculates end_date - start_date in seconds. timestamp)) * 3600 + minute (timediff (f2. 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. Functions that return the current date or time each are evaluated only once per query at the start of query execution. Use: SELECT to_Char (start_dte,'DD. MySQL is quite different from SQLite. So working with dates is something every MySQL database developer must do once in a while. 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 * 24 * 60 * 60; MySQL 将timediff输出转换为天、小时、分钟、秒的格式 在MySQL中，timediff函数用于计算两个时间之间的差异。当我们使用timediff函数后，它将返回一个时间差，并以时、分、秒格式表示。 TIMESTAMPADD(HOUR, TIMESTAMPDIFF(HOUR,CURDATE(),timestamp_column_name), CURDATE()) Instead of CURDATE() you can use an arbitrary date, for example '2000-01-01' Not sure if there could be problems using CURDATE() if the system date changes between the two calls to the function, don't know if Mysql would call both at the same time. On the other hand, DATEDIFF () doesn’t allow you to specify a unit. because the diff from 08/18 to 12/08 is 3 until the 12/17 it return 3 after it will return you 4. 58 and found no overflow with timestamps differing by up to at least 10000 years. How to Create and Drop Mysql Database using Command Line and PHP Script. Some people might also find it easier to read (oh, does timestamp diff. Note: You need to pass two date / datetime. The functions in this section use a format string that is compatible with the MySQL date_parse and str_to_date functions. 1 Answer. /format. In MySQL, how would I get a timestamp from, say 30 days ago? Something like: select now() - 30 The result should return a timestamp. 0 and later) An implementation of . Jan 18, 2022 at 12:05. Select INSERT UPDATE DELETE Query in MySQL. Date values are interpreted as DateTime with the time part set to 00:00:00 by default. In a Unicode database, if a supplied argument is a. Note: If there are specified two arguments with this function, it first adds the second argument to the first, and then returns a datetime value. Subtracts the 2nd argument from the 1st (date1 − date2). So the TIMESTAMPDIFF(MINUTE. I've tested TIMESTAMPDIFF on MySQL version 5. Share. Returns the time span between two TIMESTAMP or TIMESTAMPTZ values, in the intervals specified. PHP MySQL TIMESTAMPDIFF with seconds not working. createDate) maxDt FROM Impressions i INNER JOIN carts c ON (i. To achieve this, we will utilize the MySQL DATEDIFF () function to calculate their ages: SELECT CONCAT (first_name, ' ', last_name) AS full_name, birth_date, FLOOR (DATEDIFF (CURRENT_DATE, birth_date) / 365) AS age FROM employees; In this query, the DATEDIFF () function calculates the number of days between the current date and the birth_date. 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. now () - a. The TIMESTAMPDIFF() function in MySQL is used to subtract a period of time between two datetime values. 4. 6 Answers Sorted by: 11 You could use the native TIMESTAMPDIFF function : SELECT TIMESTAMPDIFF (<INTERVAL>,<timestampFrom>,<timestampTo>); If you want to find the difference between the first and the last timestamp of a given host ID, here you are: SELECT TIMESTAMPDIFF (MINUTE,MIN (pingtime),MAX (pingtime)) FROM yourTable WHERE host = 2; Share Fractional seconds for TIME , DATETIME, and TIMESTAMP values are supported, with up to microsecond precision. Most of the date/time functions in. execution_time* (q. MySQL MySQLi Database. Below would correct the most popular answer to return hours as an integer and minutes as a decimal (ie 6. Follow answered. DATE_ADD () Add time values (intervals) to a date value. Ask Question Asked 9 years ago. Follow. 4 Answers. 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. g. 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. Run SQL » Result: Click "Run SQL" to execute the SQL statement above. TIMESTAMPDIFF is from mysql db. I have tried this using TIMESTAMPDIFF(microsecond,Start,End)as diff but it is to milliseconds and I don't know how to convert it to "ss. Note that TIMESTAMPDIFF. 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. 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 returns an INTEGER value representing the number of intervals between the two timestamps. If TIMESTAMPDIFF () returns NULL, we can find rough age by subtracting the current year from the year of birth. 0. I would like to be able to calculate difference. numeric-expression. I a few seconds after I accepted the other one, you update your answer with a nice explaination. To calculate the difference between the timestamps in MySQL, use the TIMESTAMPDIFF (unit, start, end) function. Here’s an example that returns the difference in minutes. Share. SELECT TIMESTAMPDIFF (SECOND, '2010-01-01 10:10:20', '2010-01-01 10:45:59') AS SECONDDIFFERENCE; 1 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. If the value is not a CHAR or VARCHAR data type, it is implicitly cast to VARCHAR before evaluating the function. According to the documentation, the first argument can be any of the following: MICROSECOND SECOND MINUTE HOUR DAY WEEK MONTH QUARTER YEAR2 Answers. Its arguments are the unit in which you want the result expressed, and the two dates for. 3. E_START_DATETIME_PST),. NOTE the most voted up answer in this chain is INCORRECT! Using HOUR will only return hours as an integer. 0. 549345 (and then false. SELECT SEC_TO_TIME (TIMESTAMPDIFF (SECOND,`table`. 3. 0. Puede ser uno de los siguientes. Mysql TIMESTAMPDIFF for time datatype return negative value. The following table, based on the MySQL manual, describes the format specifiers:. Seems to me you are looking for the amount of seconds passed since the last_attack. A datetime expression. 2. is_deleted IS NULL AND r. MySQL – TIMESTAMPDIFF() Function The DATE, DATETIME and TIMESTAMP datatypes in MySQL are used to store the date, date and time, time stamp values respectively. Of course, raw seconds makes it more difficult to compute days, weeks, or even years, but you will have a more. Take a look at the code below - notice the 1 millisecond difference in the two returned values. 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. so if date2 is yesterday and date1 is today it will provide something like this: 00:00:07 I saw the timestampdiff function a couple of times, but I am using MySQL in Domo, and this. 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. Share. TIMESTAMPDIFF giving unexpected result. I have tried the following query but it only returns the difference in seconds from the first row. m. 1. 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. Follow. MySQL. 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. As you see, it expects the parameters to be of type DATE or DATETIME. 私の実行系では TO_SECONDS() と同じ結果が得られました; Conclusion. Improve this answer. EXTRACT. 6 timestampdiff problem with return result. The minute and second functions do not return the time as minutes or seconds. You can use it like you would any other value in e. I need to produce a recordset that gives me the time between prints in seconds. 7 中提供的所有 日期和时间函数 。. TIMESTAMPDIFF giving unexpected result. 1. If you are using timestamp, this could be the solution in MySQL using SQL. MYSQL CREATE, ALTER, DROP, TRUNCATE, VIEW Tables. The unit for the result (an integer) is given by the unit argument. so. MySQL timestampdiff() 函数就比 datediff() 功能强多了，datediff() 只能计算两个日期（date）之间相差的天数。Adds the integer expression interval to the date or datetime expression datetime_expr. 1. minutes = total_seconds DIV 60. 1 why does mysql timediff function give wrong output? Load 7 more related questions Show. To calculate the difference between two date/datetime expressions, use TIMESTAMPDIFF. status_timestamp) as last_timestamp FROM t tmain. userid,cb_users. TIMESTAMPADD () Examples – MySQL. The schema is SYSIBM. `time_column. timestampdiff ()：根据指定单位返回两个时间相减的时间差。. Павел П. TimeStamp2, t2. My SQL query is correct in answers alone but when it comes to the format it fails. MySQL TIMEDIFF () returns the differences between two time or datetime expressions. To understand the MySQL convert timediff output to day, hour, minute, and second format, you need to use CONCAT () from MySQL. 01. 5 日付の計算. Thanks both of you (: –I want to calculate total Seconds between start time and end time. 2 Answers. {fn TIMESTAMPDIFF (interval,startDate,endDate)} returns the difference between the starting and ending timestamps ( startDate minus endDate) for the specified date part interval (seconds, days, weeks, and so on). 21. (Client in EST, server elsewhere). I set up my MySQL database with the field 'time' It is not HH:MM in the traditional sense, it is the time an event occurred, so an event with the value of 5:45 occurred with 5 minutes 45 seconds left in a game. Learn more about TeamsFor millisecond, the maximum difference between startdate and enddate is 24 days, 20 hours, 31 minutes and 23. PHP MySQL TIMESTAMPDIFF with seconds not working. ^^^ 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. Share. Mysql 5. For example: CREATE TABLE t1 (t TIME (3), dt DATETIME (6)); The fsp value, if given, must be in the range 0 to 6. MySQL TIMESTAMPDIFF Function Example SELECT TIMESTAMPDIFF(SECOND,’2013-01-14 10:59:10′, ‘2013-01-17 11:50:34’); #262284. transaction_pk = tmain. timeDiff), SECOND(x. This is the query I am working on right [email protected], NOW()). If startdate and enddate are both assigned only a time value, and the datepart is not a time datepart, DATEDIFF returns 0. you can use mysql funcion timestampdiff like below. You don't need to perform annotate or aggregate if you need difference for all the records. I tried to look for a solution with annotate, but there is no support for aggregate functions in either mysql nor postgres. 返回值. 0. . MySQL has a built-in function called TIMESTAMPDIFF, which we can use to calculate the difference between two timestamps in various units of measurement. TIMESTAMPDIFF(MINUTE,T. mysql> create table DemoTable -> ( -> DueDatetime1 datetime, -> DueDatetime2 datetime -> ); Query OK, 0 rows affected (0. SELECT TIMESTAMPDIFF(HOUR, UTC_TIMESTAMP(), NOW()); If the server's timezone is PST this will return -8. The unit for the result (an integer) is given by the unit argument. I have tried to used timestampdiff, but it takes three arguments. The second parameter of DATEDIFF takes a datetime so your string is implicitly converted to a datetime. Hot Network Questions Job offer doesn't smell quite right - is this a scam?. SELECT ABS (TIMESTAMPDIFF (SECOND, start_time, end_time)). Example. If start is greater than end the result is negative. At least these are real and true seconds, unlike the MySQL DATEDIFF where they are. About;. I) if you need to calculate the elapsed time in seconds between two timestamp columns try this: SELECT extract ( day from (end_timestamp - start_timestamp) )*86400 + extract ( hour from (end_timestamp - start_timestamp) )*3600 + extract ( minute from (end_timestamp - start_timestamp) )*60 + extract ( second from (end_timestamp - start. Because the number 21 matches with the %d specifier, the function takes 21 as the day value. 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. TIMESTAMPDIFF ( numeric-expression string-expression. values('id', 'diff_time')MySQL TIMESTAMPDIFF() function explained. The query to create a table is as follows: mysql> create table convertTimeDifferenceDemo -> ( -> Id int NOT NULL AUTO_INCREMENT, -> StartDate. W3Schools offers free online tutorials, references and exercises in all the major languages of the web. 0. So maybe this problem has been fixed. Note: You need to pass two date / datetime values along with the unit (eg, day, month, etc. From the Official MySQL docs: The DATETIME type is used for values that contain both date and time parts. 0. transaction_pk and tsub. An expression that returns a value that is a built-in SMALLINT or INTEGER data type. The function subtracts one datetime value from the other in the specified unit. This is not the case for your samples like 840312135169 because the "69" at the end would be read as seconds, but a minute has 60 seconds only. DATE_FORMAT () Format date as specified. Here, you have learned how to use MySQL TIMESTAMPDIFF() function with various examples. How can i store the return value from the timestampdiff function. Before MySQL 5. id-1 and f. timeDiff), MINUTE(x. Share. Yes, because the timestamp handles the leap years. INTERVAL '1-2' YEAR TO MONTH. 返回：end - begin 的时间差，并以 unit 指定的单位进行输出。. How do I use TIMESTAMPDIFF to get the difference in seconds between the dates in all rows of data. unit：指定返回时间差的单位。. After executing you can use it like this. All you need is to execute the code below and then use the function. 1. TIMESTAMPDIFF () does not support dynamic units like that. I made this: select strftime('%s','2012-01-01 12:00:00') - strftime('%s','2004-01-01 02:34:56') but this is just. So i want to use the same query to get the TIMESTAMPDIFF in a table in Oracle. minDt, tbl. 0 [Release 1. 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. 1. btw timestampdiff does not work in my db version, so I might need another solution. One month is considered elapsed when the calendar month has increased and the calendar day and time is equal or greater to the start. ; Full example. SELECT timestampdiff (minute,created_at,now ()) AS TIMEDIFF Below is the TIMEDIFF in minutes using the above query id TIMEDIFF. minutes = total_seconds DIV 60. SELECT timestampdiff (minute,created_at,now ()) AS TIMEDIFF. 3. Seconds (the absolute value of the duration must be less than 680105031408. CURRENT_TIMESTAMP returns the current datetime something like 2017-03-09 15:19:53. 2355:46:39. UNIT can be SECOND. , day, month, etc). 01. If TIMEDIFF () returns -02:00:00, -00:05:00, or 00:04:00, then the record would be excluded. It works if my beginning date is the first of january and the end date the 31st of December, but does not if it stars somewhere else during the year. 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. maxDt)) AS Duration FROM (SELECT DATE(i. Example-3. One alternative would be to define a function (MySQL stored program) that will calculate that difference. If you get a much shorter list of. それぞれのペットが何歳なのかを判別するには、 TIMESTAMPDIFF () 関数を使用します。. However, the search condition TIMESTAMPDIFF (SECOND, NOW (), (q. PHP MySQL TIMESTAMPDIFF with seconds not working. 0. Here's the sql:. . Aarthy. 11. 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. The above works as expected. TRUNC(TIMESTAMPDIFF(seconds,min(BE. The unit for the result (an integer) is given by the unit argument. timeDiff) FROM ( SELECT Sec_to_time(Avg (Timestampdiff (second, `survival`, `lastupdate`))) as. TIME_START returns an interval which can be converted to seconds using extract () and those can be converted to minutes: extract (epoch from now () - a. Share.