Teams. Since the question is being tagged for mysql, I have the following implementation that works for me and I hope similar alternatives would be there for other RDBMS's. One month is considered elapsed when the calendar month has increased and the calendar day and time is equal or greater to the start. If TIMESTAMPDIFF () returns NULL, we can find rough age by subtracting the current year from the year of birth. An expression that returns a value that is a built-in SMALLINT or INTEGER data type. The schema is SYSIBM. DATE_ADD () enhances SQL queries by allowing dynamic calculations in date-related WHERE or HAVING clauses, enabling more precise filtering. One solution you could use is extra in django queryset. 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. Share. because the diff from 08/18 to 12/08 is 3 until the 12/17 it return 3 after it will return you 4. TIMESTAMPDIFF. 2 MySQL datediff strange results. 6. when MySQL stores a value into a column of any temporal data type, it discards any fractional part and does not store it. TIMESTAMPDIFF( HOUR , now( ) , FROM_UNIXTIME( 1364814799 ) ) will return negative and positive values, if you need to use x>this_timestamp. 2 Answers. 59) %T: Time, 24-hour (hh:mm:ss) %U: Week (00. Jan 18, 2022 at 12:05. This method returns the difference between two dates formatted as hours:minutes:seconds. See it on sqlfiddle. select(sum(df. slaakso. Note that TIMESTAMPDIFF. Note: You need to pass two date / datetime. Seems to me you are looking for the amount of seconds passed since the last_attack. DATE_SUB () Subtract a time value (interval) from a date. 0 TIMESTAMPDIFF giving unexpected result. Discussion: To calculate the difference between the timestamps in MySQL, use the TIMESTAMPDIFF (unit, start, end) function. 1 Answer. 4, the instances are limited in which a fractional seconds part is permitted in temporal values. The schema is SYSIBM. Actually the data type for the columns is TIME, and this a sample of data stored: 07:11:40 07:11:56. NOTE the most voted up answer in this chain is INCORRECT! Using HOUR will only return hours as an integer. 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. . Teams. Combine SUB_DATE AND TIMEDIFF to substract 1 hour in mysql. This is incorrect because this would only work correctly if the string represents a valid datetime. Here are the first 25 rows of. answered Oct 2, 2017 at. I would recommend to choose that unit. 1) Last updated on APRIL 12, 2021. *, timestampdiff (minute, start_time, end_time) as minutes from t;DATEDIFF() TIMESTAMPDIFF() 2つの引数を必要とする。 引数が3つ必要です。 第1引数から第2引数を引く（expr1 – expr2）。 第3引数から第2引数を引く（expr2 – expr1）。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. Instead, the result is 838:59:59, which makes sense because that is the limit. answered Aug 21, 2018 at 15:15. SELECT DATEDIFF (mm, GETDATE (), '2017-12-31') SELECT TIMESTAMPDIFF (month, NOW (), '2017-12-31'); For more information, see: Sybase ASE DATEADD to MariaDB TIMESTAMPADD Conversion. My database is mysql. SELECT t1. Alternate Solution ( get the difference in Seconds ) SELECT TIMESTAMPDIFF(SECOND,NOW(),'2011-06-14 17:22:52'); Reference. An expression that returns a value that is a built-in SMALLINT or INTEGER data type. Returns the time span between two TIMESTAMP or TIMESTAMPTZ values, in the intervals specified. I tried using timestampdiff to calculate but it doesn’t seem to work, how could I achieve this? Current. MySQL – TIMESTAMPDIFF() Function The DATE, DATETIME and TIMESTAMP datatypes in MySQL are used to store the date, date and time, time stamp values respectively. This function takes the difference between two dates and shows it in a date format yyyy-mm-dd. 注意. If you divide until day, you are fine (every single day every year has the same amount of seconds). The avg function works like any other aggregate function, and will respond to group by. SELECT ABS (TIMESTAMPDIFF (SECOND, start_time, end_time)). PHP MySQL TIMESTAMPDIFF with seconds not working. SELECT datedifference (date1,. In MySQL, how would I get a timestamp from, say 30 days ago? Something like: select now() - 30 The result should return a timestamp. Alternatively, for the difference between dates in minutes, hours, days, weeks, months, or years – SELECT TIMESTAMPDIFF (UNIT, `DATE-A`, `DATE-B`) FROM `TABLE`. DATE_FORMAT () Format date as specified. Result is expressed as a time value (and it has the limitations of the time. To calculate the difference between the timestamps in MySQL, use the TIMESTAMPDIFF (unit, start, end) function. id = f. For a complete list of built-in date and time functions, check the Flink documentation. What I have written is : date_diff ('minute',payment_time,trigger_time) <= 15 I basically want the count of users who paid within 15 mins of the triggered time thus I. Your first answer. Select UNIX_TIMESTAMP (last_attack) as my_required from users. 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. 001) Javascript timestamps, for example, are represented in milliseconds since the Unix epoch. . 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. TIMESTAMPDIFF () does not support dynamic units like that. timeDiff) FROM ( SELECT Sec_to_time(Avg (Timestampdiff (second,. You still need to divide it by 60 and round the result. 58 and found no overflow with timestamps differing by up to at least 10000 years. 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. Alternative for DATEDIFF. You should use TIMESTAMPDIFF () to achieve that. 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. I want to find out how many second have been elapsed since a date from Mysql entry which was inserted with NOW() and the current date in the format date("Y. The DATEDIFF() function returns the time between two dates. A BIGINT. Share. createDate), AVG(TIMESTAMPDIFF(SECOND, tbl. MariaDB :addYears, addQuarters, addMonths, addWeeks, addDays, addHours, addMinutes, addSeconds, addMilliseconds, addMicroseconds, addNanoseconds. 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. MySQL :: MySQL 5. I suggest you keep your difference in seconds, and when presenting it you adapt it as necessary. Now if. 0. For second, the maximum difference is 68 years, 19 days, 3 hours, 14 minutes and 7 seconds. In SQL Server, you can use DATEDIFF function to get the datetime difference in specified units. Example-3. calculate time diffrence in mysql by seconds. +1 For keeping the query sargable and not wrapping the timestamp. Syntax : TIMESTAMPDIFF (unit,expr1,expr2). The value specifies the interval that is used. Weeks, quarters, and years follow from that. Apr 4, 2018 at 6:36. Alternatively I could use the difference between the start and end columns, as long as it returned the time in "ss. SELECT. status_timestamp) as last_timestamp FROM t tmain. createDate) as createDate, min(i. The function allows you to calculate time differences in units other than seconds, such as years, months, or days. Let us walk through them quickly: To calculate the difference between dates in days – SELECT DATEDIFF (`DATE-A`, `DATE-B`) FROM `TABLE`. I can do this in MySQL like this: TIMESTAMPDIFF(HOUR, links. However, two of them only store part of a date: TIME stores the time, and YEAR stores the year. TIMESTAMPDIFF excludes the start date in its calculation. Let’s focus on the data types that can store a date: DATE: used for values that contain a date but no time. Note: You need to pass two date / datetime values along with the unit (eg, day, month, etc. 1. I am using MySQL. So in case we want to calculate a gap greater than 838 hours we need s olution, which could be the following one: # Number of days * 24 + time difference. result IS NULL) AS nr_s, (SELECT COUNT(r. Use mysql's timestampdiff () function to calculate the difference and use from_unixtime () function to convert the timestamp into a datetime data type. In MariaDB, you can use TIMESTAMPDIFF function. We can define a Unix timestamp as the number of seconds that have passed since ‘1970-01-01 00:00:00’UTC. select id, CAST (datediff (curdate (),birth_date) / 365 as int) from student. Because of two reasons: MySQL's built-in functions UNIX_TIMESTAMP and FROM_UNIXTIME take the time zone stored in @@global. mysql> create table DemoTable -> ( -> DueDatetime1 datetime, -> DueDatetime2 datetime -> ); Query OK, 0 rows affected (0. As you see, it expects the parameters to be of type DATE or DATETIME. 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. This is the syntax: select TIMEDIFF('2020/01/30 T00:00:00. Definition and Usage The TIMEDIFF () function returns the difference between two time/datetime expressions. seconds, minutes, hours, etc. I am using below code for today and database date. g. If you get a much shorter list of. This function takes three arguments: the unit of time you want to measure the difference in (e. runTime,NOW()) > 20. 3. 7. So i want to use the same query to get the TIMESTAMPDIFF in a table in Oracle. The TIMESTAMPDIFF () function's 2nd and 3d arguments are datetime expressions and the 2nd is subtracted from the 3d. TimeStamp2))<=4 WHERE. 53), where Sunday is the first. TIMESTAMPDIFF. The supported range is '1000-01-01 00:00:00' to '9999-12-31 23:59:59'. It supports event scheduling by calculating new times based on time. Use DSL. W3Schools offers free online tutorials, references and exercises in all the major languages of the web. ). In this case, we compare two datetime values (as opposed to just the date values as in the previous examples). TIMESTAMPDIFF method only works with datetime format. If I concat it with ' : '. SELECT UNIX_TIMESTAMP (timestring) Time format: YYYY-MM-DD HH:MM:SS or YYMMDD or YYYYMMDD. SELECT FROM_UNIXTIME (epoch timestamp, optional output format) The default output is YYYY-MM-DD HH:MM:SS. 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. TIMEDIFF('00:04:50','23:59:59');. numeric-expression. Since UNIX-timestamps are the number of seconds passed since 1970-01-01 00:00:00, you'd have to calculate using seconds. m. As a result, such columns use DATETIME display format, have the same range of values, and there is no. Using TIMESTAMPDIFF : NOTE:- Following Assumptions are made for TIMESTAMPDIFF () function. MySQL Database: Restore Database. COALESCE (TIMESTAMPDIFF (SECOND,time_in1,time_out1),0) + COALESCE (TIMESTAMPDIFF (SECOND,time_in2, time_out2),0) This works if you want to use zero. timestampDiff (timestamp1, timestamp2). You should take a look the TIMESTAMPDIFF function. To avoid having to repeat yourself, you can wrap the calculation: SELECT HOUR(x. Apparently the UTC_TIMESTAMP (). Fortunately, MySQL provides a handy date function to make such calculations easy-breezy – say hello to the MySQL datediff function. 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. SELECT TIMESTAMPDIFF (MINUTE,'2022-02-01 10:30:27','2022-02-01 10:45:27') AS 'Difference in Minutes'; 0. 1 Answer. Below is a practical illustration of this method:In this method, we create a custom function ConvertSecondsToUnits that takes the number of seconds and the desired unit ('days', 'weeks', or 'months') as parameters. . SELECT * FROM table WHERE TIMESTAMPDIFF (MINUTE,timestamp,NOW ()) AS thisisit. SELECT TIMESTAMPDIFF (SECOND, start_time, end_time). MySQL convert timediff output to day, hour, minute, second format. 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. 000Z','2020/01/28. The MySQL server can be run with the MAXDB SQL mode enabled. Some people might also find it easier to read (oh, does timestamp diff. mmm". You can then use SEC_TO_TIME (seconds) to get the format hh:mm:ss, and take the right 5 characters if you really need hh:mm. 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. PHP MySQL TIMESTAMPDIFF with seconds not working. I've been busy with this for hours, but I cant get it to work. start, c1. Im not sure if using "AS thisisit" is a current function of TIMESTAMPDIFF but I. You don't need to perform annotate or aggregate if you need difference for all the records. And when specifying second instead of microsecond it. This means that multiple references to a function. DATE_ADD () Add time values (intervals) to a date value. It is a bad idea to use some operations on the index field. end_date) which calculates the remaining seconds is straightforward and easy to understand. 000000) seconds + (minutes+(hours+((days+(months*30)+(years*365))*24))*60 )*60:I have a MySQL table with two datetime columns. Though, if you have an index on the timestamp column, this would be faster because it could utilize an index on the timestamp column if you have one: SELECT * FROM table WHERE. 21. TIMESTAMPDIFF ( unit type, datetime expression1, datetime expression2); Unit is used to express the difference of datetime or date in days, months, etc. Param2 FROM Table1 t1 LEFT JOIN Table2 t2 ON ABS(TIMESTAMPDIFF(SECOND,t1. I have the following select statement where I subtract timestamps for knowing how long a truck has been stopped at a location: SELECT f. 단순히 일 차이를 가져올 때 사용하는 것이 datediff 함수입니다. 0. SELECT TIMESTAMPDIFF(HOUR, '2010-11-29 13:13:55', '2010-11-29 13:16:55') as newtable; | newtable | 7 1 row in set (0. TIMESTAMPDIFF in a php foreach-loop. +1 for to the point the stored timestamp is less than x minutes. TIME_TO_SEC (TIMEDIFF (endDate, startDate))/3600 as hours. The below-shown queries help you understand the use of this TIMESTAMP DIFF method. CURRENT_TIMESTAMP: returns the current SQL timestamp (UTC) . To find the difference between two datetime values, you can use TIMESTAMPDIFF (). @Enrico - Not true. One expression may be a date and the other a datetime. 433325 and user 0 legitimately logged in again at 2021-09-03 20:03:35. DATEDIFF takes only two arguments in MySQL. ) to use for determining the difference. I am using the MySQL function TIME_TO_SEC to convert the difference to seconds. TIMESTAMPDIFF () does not support dynamic units like that. Các giá. The unit argument can be MICROSECOND , SECOND , MINUTE , HOUR , DAY , WEEK , MONTH , QUARTER , or YEAR . The Mysql SEC_TO_TIME function is used to create time values based on a given second. I have been using the following query in MySQL workbench to calculate days between dates for individual id's. To calculate the difference between two dates in seconds, we can make use of this function along with the UNIX_TIMESTAMP function. Note that unit values can be different in SQL Server DATEDIFF and MariaDB TIMESTAMPDIFF. To understand the MySQL convert timediff output to day, hour, minute, and second format, you need to use CONCAT () from MySQL. timestampdiff Description. 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. 13. Default: 10; Maximum idle connections: The total number of connections allowed to be idle at a given time. 11. So we could modify the previous example so that TIMESTAMPDIFF. . time_zone = 'SYSTEM', @@system_time_zone, @@session. I have a table that contains among other things an id a time in the format date:time (YYYYhhmmss) and a readingvalue. The TIMESTAMPDIFF function allows its arguments to have mixed types e. MySql version >=5. 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. 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. MySQL is quite different from SQLite. *,cb_users. If the value returned from TIMEDIFF () is greater than 5 minutes, the record it represents will be returned. 1. 3. PHP MySQL TIMESTAMPDIFF with seconds not working. FROM_UNIXTIME (ms * 0. Calculating the difference in seconds of DateTime values: To calculate the difference, just change the argument MINUTE to SECOND. Stack Overflow. A date or date with time is returned. If I concat it with ' : '. timestamp off by minutes. The main problem is as follows: In order to find the difference between days you need to use datediff(); datediff() returns the difference in days. To get the difference in seconds as we have done here, choose SECOND . Aarthy. Since you're working with a known set of units, you could use a CASE statement to achieve this. Usage and definition for TIMESTAMPDIFF function (Doc ID 2756136. arrival_time) # returns seconds as integer. TIMESTAMPDIFF ( numeric-expression string-expression. The PROCESS_START_DATE column in query have data which contains date and time. SELECT SUM(Seconds_In_State) From (SELECT Time_Stamp, MState, (-1 * TIMESTAMPDIFF(Minute, LEAD(Time_Stamp) OVER(ORDER BY Time_Stamp), Time_Stamp)) AS Seconds_In_State FROM Mstate WHERE. The Syntax. 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) <=. MySQL MySQLi Database. UNIX_TIMESTAMP is seconds seconds since '1970-01-01 00:00:00' in UTC. One expression may be a date and the other a datetime. The TIMESTAMPDIFF() function is truly a powerful tool in our SQL arsenal, enabling us to easily calculate differences between two timestamps. Use a proper datetime type instead. 2. And it should include hours, minutes etc means it must be the full difference like 10:25:30 - 10:15:25 = 605 seconds. ; Second, because the comma (,). 1. Your last edit returned 25 minutes and 19 seconds. The SEC_TO_TIME () function converts numeric seconds into a time value (in format HH:MM:SS). 2. According to the documentation, the first argument can be any of the following: MICROSECOND SECOND MINUTE HOUR DAY WEEK MONTH QUARTER YEAR2 Answers. Share. This is the very lengthy MySQL Date and Time manual page. So now my question: I thought apache drill replaces the function "TIMSTAMPDIFF" at runtime. 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 MySQLi Database. 13. Q&A for work. The timestamp difference returns the difference between two dates in seconds. You want SECOND:. Strangely some of the rows return a NULL, and I am unable to understand why. 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. Sybase ASE to MariaDB Migration. Share. a call to timestampdiff:日付関数 (比較, 加算, 差分, 抽出)の使い方. How do I use TIMESTAMPDIFF to get the difference in seconds between the dates in all rows of data. 59) %s: Seconds (00. SELECT TIMESTAMPDIFF. Subtracting two such "numbers" isn't going to be meaningful, except that the sign of the result will tell you which time was later. I use the same date in both date parameters. TIMESTAMPDIFF () in MySQL returns a value after dividing one DateTime expression by another. 0. TIMESTAMPDIFF(HOUR, '2018-06-01 00:00:00', '2018-06-01 12:00:00') Share. 584817 (and false logins) followed by user 4357 at 2021-09-03 22:41:43. Mysql TIMESTAMPDIFF for time datatype return negative value. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. TIMESTAMPDIFF(MINUTE,T. Follow. 0. 0. This function in MySQL is used to return a value after subtracting a DateTime expression from another. YYYY') AS start_date, to_Char (start_dte,'HH24:MI') AS start_time FROM Course. You can use the DATE () function to extract the date portion of the timestamp: SELECT * FROM table WHERE DATE (timestamp) = '2012-05-25'. 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. 6 timestampdiff problem with return result. By using the new function in 15. Stack Overflow. Use timestampdiff() to get the time difference, and curdate() to get today's date. select a= TIMESTAMPDIFF(MINUTE,P_date1 ,P_date2) . How can i store the return value from the timestampdiff function. After executing you can use it like this. This function only works correctly at the level of seconds for timestamps within a few days of each other; it overflows gracelessly (as I discovered with great pain). select t. 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. If you are experiencing this bug, a good alternative is to use TIMESTAMPDIFF and then get the sum of the column you create. I want to create one new generated column that contains time difference of the two datetime columns. to minutes select a= TIMESTAMPDIFF(SECOND,P_date1 ,P_date2). Use: SELECT to_Char (start_dte,'DD. SELECT * FROM messages WHERE time > UNIX_TIMESTAMP (NOW ()) - 604800. 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. 1 why does mysql timediff function give wrong output? Load 7 more related questions Show. Example of the possible combinations below: Interval. Simple but elegant. If your subtraction involves daylight savings change-overs, a particular. It's a powerful tool for performing date and time calculations, allowing you to manipulate temporal data in various ways. I have seen this answer but it converts datetime into seconds and return time only, I want date as well. email FROM cb_sessions LEFT JOIN (cb_user. mysql timestampdiff () 函数介绍. 1. The function supports units of years, quarters, months, weeks, days, hours, minutes, seconds, milliseconds, microseconds, and nanoseconds. Q&A for work. 1. SECONDS is not a valid unit. The TIMESTAMPDIFF function returns the. The TIMESTAMP () function returns a datetime value based on a date or datetime value. MySQL DATEDIFF: Calculate Days Between Two Dates. ). The TIMESTAMPDIFF() function calculates the difference between two timestamps in a specified unit (seconds in our case). The unit value may be specified using one of keywords as shown,. SELECT TIMESTAMPDIFF (YEAR, YOUR_COLUMN, CURDATE()) FROM YOUR_TABLE AS AGE Check the demo image below. 3 Answers. 3. Before MySQL 5. jooq. Example 1 – Basic Difference Here’s an example that demonstrates the basic difference between these functions. You can use TIMESTAMPDIFF function for getting Approximate difference between two timestamps. Your query string would look like this:Your problem is that TIMESTAMPDIFF effectively first truncates the values to the indicated precision (e. SELECT SEC_TO_TIME. 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。. UNIX_TIMESTAMP is seconds seconds since '1970-01-01 00:00:00' in UTC. Clearly it is paying attention to the offset, and in this situation, it is using it correctly. One alternative would be to define a function (MySQL stored program) that will calculate that difference. Follow answered. Get your own SQL server SQL Statement: Edit the SQL Statement, and click "Run SQL" to see the result.