Mysql datediff milliseconds. dm_exec_query_stats (Transact-SQL) where is describes the last_elapsed_time column as: Elapsed time, reported in microseconds (but only accurate to milliseconds), for the most recently completed execution of this plan. Mysql datediff milliseconds

 
dm_exec_query_stats (Transact-SQL) where is describes the last_elapsed_time column as: Elapsed time, reported in microseconds (but only accurate to milliseconds), for the most recently completed execution of this planMysql datediff milliseconds  e

Improve this question. 1. ) which is seconds. For example: SELECT DATEDIFF('hh','12/22/2021 8:15:23','12/31/2021 10:30:23') If you specify a date without a time, DATEDIFF defaults to time 00:00:00. This will give you the difference in days. Thanks. Using milliseconds gets a little more accurate: UPDATE dbo. The DATEDIFF function in SQL Server is used to calculate the difference between two dates. Clock AND DATEDIFF(millisecond, e2. For other formats, check out the MSDN page on CAST and CONVERT. DATEDIFF( date_part , start_date , end_date) Code language: SQL (Structured Query Language) (sql) The DATEDIFF() function accepts three arguments: date_part , start_date , and end_date . Aggregate functions. The function returns the date and time values as UTC time (Coordinated Universal Time). Deinstall the old Version (5. select ( (unix_timestamp ('2017-12-26 14:35:19. Convert TIMEDIFF to hours plus minutes. 1. It accepts any valid date or datetime expression. MySQL TIMEDIFF () returns the differences between two time or datetime expressions. SQL Server does not. If you want the same in C# you need to remove the time component. datediff. Then you can find a link to Custom Date and Time Format, which explains that to display milliseconds, you must do this : dr. 1. 1:15:35:025. Weeks, quarters, and years follow from that. First, you should probably use SYSDATETIME () if you're looking for more precision. ) DATE and TIMESTAMP arguments can be combined. How can I create a LINQ2SQL query that doesn't use MILLISECOND in the call to DATEDIFF? 5. Copy. October 10, 2023. But if you want an event at 12:03, just substitute DateTime. The following example illustrates how to use the. PostgreSQL - Date Difference in Weeks. DateDiff in SQL. DATEDIFF의 경우: date_or_time_expr1 및 date_or_time_expr2 는 날짜, 시간 또는 타임스탬프일 수 있습니다. That's the intended behavior for unix_timestamp - it clearly states in the source code docstring it only returns seconds, so the milliseconds component is dropped when doing the calculation. orders table as in Example 3, we can use DATEDIFF () to find the interval between today's date and the date on which an order is placed. date_or_time_part 은 지원되는 날짜 및 시간 부분 에 나열된 값 중 하나. 0: dateTimeOffset. TimeSpan diff = d2 - d1; int millisceonds = (int) diff. Leap seconds tend to cause trouble with software. 1. Even if both calls were to return exactly the same time you could see the issue that you are experiencing due to rounding. I have a simple query which calculates time difference between two datetime as below: SELECT TIMEDIFF ( '2012-08-19 08:25:13', '2012-07-19 18:05:52' ); Output: 734:19:21. 1. This will generate sql query with DATEDIFF function. currentTimeMillis () CREATE FUNCTION dbo. MySQL displays DATETIME values in 'YYYY-MM-DD hh:mm:ss[. You would sum up the differences between the timestamps, then use that value (would be in milliseconds) to get the time: SELECT SEC_TO_TIME (time_milis / 1000) FROM ( SELECT SUM (UNIX_TIMESTAMP (date1) - UNIX_TIMESTAMP (date2)) as time_milis FROM table ). Specifically, it gets the difference between 2 dates with the results returned in date units specified as years, months days, minutes, seconds as a bigint value. SELECT GETDATE (); SELECT /* query one */ 1 ; SELECT GETDATE (); SELECT /* query two */ 2 ; SELECT GETDATE (); To calculate elapsed times, you could grab those date values into. To get the number of month or day, you change the first argument to month or day as shown below: Notice that the DATEDIFF () function takes the leap year into account. 09/12/2010 13:43:51. currentTimeMilliseconds () RETURNS BIGINT WITH EXECUTE AS CALLER AS BEGIN DECLARE @t datetime = CONVERT (datetime, GETUTCDATE ()); DECLARE @days BIGINT = Datediff (day, '1970-01. Subscribe to: Post. Calculating Average Milliseconds in DateTime Column. enddate:. In this article, we will explore the following: DATEADD function. Corresponds to SQL Server's DATEDIFF(millisecond, @startDate, @endDate). Returns the interval between two dates. CurDateTime () is better than DateTime. 6. HTH. The application passes in two parameters: a string representing the number of the. I have gone through the Microsoft Document for this view: sys. 000Viewed 3k times. This MySQL. You can only do that with the DATETIME and SMALLDATETIME data-types. Accepts relevant date and time parts (see next section for details). It means that the DATEPART function returns the number of times the boundary between two units is crossed. 0. Previous SQL Server Functions Next . An optional fsp value in the range from 0 to 6 may be given to specify fractional seconds precision. datediff (timestamp) function. MONTHS_BETWEEN. I need to convert this value into epoch time and store it in a 'bigint' field. 9999999', '2023-10-02 00:00:00. I tested for up to 50 years and it works fine on my 64 bit fedora linux system. msdn. datediff. Newer Post Older Post Home. DateGroup. round sign sin sqrt sum tan truncate date functions adddate addtime curdate current_date current_time current_timestamp curtime date datediff date_add date_format date_sub day dayname dayofmonth dayofweek dayofyear extract from_days hour last_day localtime localtimestamp makedate maketime microsecond minute month. SELECT TIMESTAMP(`registration_date`, `registration_time`) AS 'registration_timestamp'. To truncate a datetime2 (7) to 3 places (aka milliseconds): -- Strip of fractional part then add desired part back in select dateadd (nanosecond, -datepart (nanosecond, TimeUtc) + datepart (millisecond, TimeUtc) * 1e6, TimeUtc) as TimeUtc. For more about this SQL Server function, see DATEDIFF. And we. {Days, Hours, Milliseconds, Minutes, Months, Seconds, Years} When it is recognized, it is translated into a direct call to the SQL Server DATEDIFF function, as. What is your epoch?The following statement returns 1: SELECT DATEDIFF ( month, '1999/07/19', '1999/08/23' ); The following example shows how to use the DATEDIFF function to return the number of milliseconds to do a 3-way join with the GROUPO. This MariaDB tutorial explains how to use the MariaDB DATEDIFF function with syntax and examples. DateDiffMillisecond(DbFunctions, Nullable<TimeSpan>, Nullable<TimeSpan>) Counts the number of millisecond boundaries crossed between the startTimeSpan and endTimeSpan. SQL Server stores the second integer for the time as the number of clock ticks after midnight. "timestamp" is a column in MYSQL which I hold a timstamp as such "1365793346". millisecond は、時、分、秒、および小数秒の最初の3桁を使用します。小数秒は丸められません。たとえば、 DATEDIFF(milliseconds, '00:00:00', '00:00:01. Literally speaking the epoch is Unix time 0 (midnight 1/1/1970), but 'epoch' is often used as a synonym for Unix time. One simplistic approach to measuring the "elapsed time" between events is to just grab the current date and time. Sorted by: 1. MySQL DateDiff Days. Here's what that query would look like in Navicat: To convert the rental_date from a datetime to a pure date we can use the DATE () function. Return Type. I have a separate program that writes in this row the current timedate like '2018-10-05 09:58:30. So if I have a value 1/1/2009 1:23:11. 当前系统日期、时间 select getdate() 2. Replace the hardcoded timestamp for your actual column with unix-timestamp. For larger differences, see DATEDIFF_BIG (Transact-SQL). Using the sales. Try below query if LAG () doesnt work on your DB because of configuration issues. Just convert the result in seconds to decimal and to milliseconds and nano sec. You could always write a vb function that concatenated together the different pieces along with the ":" and the ". If end_date or start_date is NULL, the DATEDIFF() function returns NULL. startdate: The first date or datetime value. SELECT COUNT (*) FROM FOOD_ACTION WHERE DATEDIFF (MINUTE,INSERT_DT,GETDATE ()) <= 1. Move to a "higher" unit (milliseconds -> seconds -> minutes -> hours and so on) until the value you get can be cast into a integer and make sure that all the values you might apply the function to in the future will still be inside the bounds of an integer. The DATEDIFF() function returns an integer that represents the number of days between two dates. SELECT CONVERT (DATETIME, CONVERT (VARCHAR (19), GETDATE (), 120)). Parse (date2Entered) Dim date1 As Date = Now ' Determine the number of days between the two dates. Syntax. The Unix epoch (or Unix time or POSIX time or Unix timestamp) is the number of seconds that have elapsed since January 1, 1970 (midnight UTC/GMT), not counting leap seconds (in ISO 8601: 1970-01-01T00:00:00Z). Introduction. xrmQueues WHERE DATEDIFF(DAY, CreateDateTime, GETDATE()) < 2 ) sub WHERE DATEDIFF(MS, CreateDateTime, GETDATE()) < 500 This leads to (german): Meldung 535: Die datediff. Corresponds to the SQL Server DATEDIFF function using millisecond to specify the type of time boundary crossed. The below statement worked in SQL Server fine. TagID = e1. CREATE FUNCTION UNIX_TIMESTAMP() RETURNS BIGINT AS BEGIN RETURN DATEDIFF_BIG(millisecond, '1970-01-01 00:00:00',. 27' which means 270ms rather than 27ms. DateTime. . e. DATEDIFF(date1, date2) Parameter Values. 100; print GETDATE() returns Mar 15 2011 6:44PM; I think SQL Server automatically typecast in print functionality. Hi All, I have two date Suppose one is getdate() and other one is gatedate() +1 . Use DATEDIFF to calculate the difference, in milliseconds, from midnight to the time. SQL Server: -- Difference between Oct 02, 2011 and Jan 01, 2012 in years SELECT DATEDIFF (year, '2011-10-02', '2012-01-01'); -- Result: 1. it returns the difference in days if datepart is day. 007' SELECT DATEDIFF (millisecond, @StartDate, @EndDate) Selects 7 as result. TSQL DateDiff to return number of days with 2 decimal places. For example, consider the following pattern. IssueDatetime, T. MILLISECOND part of the DateTime in Sql Server. Convert MySQL date with milliseconds to Google Sheets' date format. 63"Possible Duplicate: MySQL convert timediff output to day, hour, minute, second format. 36. interval = millisceonds; timer1. GETDATE () - returns the date and time of the machine the SQL Server is running on. DATEDIFF () returns expr1 – expr2 expressed as a value in days from one date to the other. Date1- This is the starting date from which the difference is to be calculated. The first is a date part. Subtract (expirationDate). This function is used to find the difference between two specified values of date. DATEDIFF의 경우: date_or_time_expr1 및 date_or_time_expr2 는 날짜, 시간 또는 타임스탬프일 수 있습니다. # Convert timedelta object to Milliseconds. I have some timestamps that are in bigint. SELECT AVG (DATEDIFF (d, DateUsed, DateExpires)) FROM tbl. 25. I am using DATEDIFF to make sure a certain action cannot happen more than once a minute. The second and third are dates. 1. SELECT order_id, required_date, shipped_date, CASE WHEN DATEDIFF (day, required_date, shipped_date) < 0 THEN 'Late' ELSE 'OnTime'. 6. minute uses the hour and minute. 243. Format$(Now, "yyyy-MM-dd HH:mm:ss. (timestamp) function. An. Applies to: Databricks SQL Databricks Runtime 10. First, how do you get the difference between two times in seconds? The datediff() function is probably not the best function to use in such a situation. DateDiff Function in SQL Server-1. Sybase ASE to MariaDB Migration. But I saw a slight performance improvement while using DATEADD-DATEDIFF over C-F-C. 000 thnx in advance6. 0. This example uses the DateDiff function to display the number of days between a given date and today. If the second argument precedes the first, the result is negative. To format your data with milliseconds, try CONVERT (varchar, SYSDATETIME (), 121). This produces errors. 4 Date and Time Functions. For example, the max difference for MILLISECONDS is: 24 days, 20 hours, 31 minutes and 23. This function accepts three parameters − the type of interval to measure (such as year, quarter, month, hour, minute, etc. Description. date_or_time_part 은. temporal. dateDiff (dd,getDate (),ExpirationDate) Is doing a days comparison. datediff()関数の実行結果の具体例. Sorted by: 45. Maybe not. log ('Day Diff: '+diffD); the difference return answer as milliseconds, then you have to convert it by division: by 1000 to convert to second. 846 hours. select CONVERT(varchar(12), DATEADD(MILLISECOND, DateDiff(MILLISECOND, '2014-08-04 10:37:28. DateDiff to find duration in minutes not working. 이 함수는 연도, 분기, 월, 주, 일, 시간, 분, 초, 밀리초, 마이크로초, 나노초 단위를 지원합니다. This function is a synonym for timestampdiff function. Corresponds to SQL Server's DATEDIFF(millisecond, @startDate,. The first six date and time functions take an optional time value as an argument, followed by zero or more modifiers. “MySQL now supports fractional seconds for TIME, DATETIME, and TIMESTAMP values, with up to microsecond. In SQL Server Management Studio. In the above case we are getting only Seconds but we are not able to get. If I were doing this in SQL, I would convert the date to a BigInt, then subtract 25568 and multiply by 86400000. Calculate passed time with PHP. 0. 구분자 자리에 구분자 혹은 약어를 사용할 수 있다. SELECT DATEDIFF(MINUTE,job_start,job_end) MINUTE obviously returns the difference in minutes, you can also use DAY, HOUR, SECOND, YEAR (see the books online link for the full list). DateDiff_Big (which returns a BigInt) is not available prior to. SQL Server does not. How to Find PostgreSQL DateDiff. I would like the format to be in MM:SS (i. Note: DATEADD and DATEDIFF SQL function can be used in the SELECT, WHERE, HAVING, GROUP BY and ORDER BY clauses. expr1 and expr2 are date or date-and-time expressions. 2. My vote for the best choice for representing a timespan would be an int:number of seconds (or milliseconds if you more precision). DECLARE @date datetime2 = '2021-01-07 14:36:17. This function takes the difference between two dates and shows it in a date format yyyy-mm-dd. SELECT DATEDIFF_BIG( millisecond, @date1, @date2 ) AS Milliseconds, DATEDIFF_BIG( microsecond, @date1, @date2 ) AS Microseconds, DATEDIFF_BIG(. Let say simple example, today date in sql server millisecond format 1395774998 like this, please look into that example given number is specific to today's date. To get the difference in seconds as we have done here, choose SECOND. Improve this answer. No other mixes are allowed. the datediff function returns the value in a INT datatype and in this case the value is too large to hold in INT. . If you want that to be millisecond based, it becomes a bit more complex as the datediff function in SQL Server is 32-bit integer based (i. The int difference between the startdate and enddate, expressed in the boundary set by datepart. Syntax. 000' set @EndDate='2010-04-01 12:00:00. orders table as in Example 3, we can use DATEDIFF () to find the interval between today's date and the date on which an order is placed. SELECT dateDiff (dd,'10/1/2011 23:59:00' , '10/2/2011') returns one day even when only one minute apart. If you need the number of fractional hours, you can use DATEDIFF at a higher resolution and divide the result: DATEDIFF(second, start_date, end_date) / 3600. And as we’ve also indicated earlier, if you run a query statement like this: Select datediff('2023-09-20','2023-09-15') as Difference; You’ll get the following result:The Unix epoch (or Unix time or POSIX time or Unix timestamp) is the number of seconds that have elapsed since January 1, 1970 (midnight UTC/GMT), not counting leap seconds (in ISO 8601: 1970-01-01T00:00:00Z). Parameter Description; date1, date2: Required. 0000000');Corresponds to SQL Server's DATEDIFF(millisecond, @startDate, @endDate). Subtract (expirationDate). The parameter can have two values: 0: The affected week-related functions use semantics similar to the ISO semantics, in which a week belongs to a given year if at least 4 days of that week are in that year. 1:15:35:025. due to unix timestamp is in bigint (instead of int), you can use this: SELECT DATEADD (S, CONVERT (int,LEFT (1462924862735870900, 10)), '1970-01-01') FROM TABLE. Remove milliseconds from date time field in. 4. If you need to return a Unix timestamp with higher precision, say, the number of milliseconds since ‘1970-01-01 00:00:00. For example, you can use: SELECT TIMESTAMPDIFF (SECOND, '2012-06-06 13:13:55', '2012-06-06 15:20:18') In your case, the third parameter of TIMSTAMPDIFF function would be the current login time ( NOW () ). MySQL DATEDIFF() Function MySQL Functions. Here is a Microsoft SQL function that returns UTC time in milliseconds (Milliseconds since 1970) its result is equal to Java. Syntax. [table] ( --timestamp and id [start] datetime NULL, [end] datetime NULL, [dif] AS ROUND (datediff (millisecond, [start], [end. For more about this SQL Server function, see. 3. If the database is running on Windows, systimestamp will generally have milliseconds. Convertint millisecond to date. DATEDIFF(hour, start_date, end_date) will give you the number of hour boundaries crossed between start_date and end_date. It is the unit in which the DATEDIFF () function returns the difference between a start date and an end date e. . 1. Let us look into the difference between the above two functions using appropriate. PostgreSQL - Date Difference in Weeks. This is why I needed to subtract 3 milliseconds to arrive at my desired date and time. How to store date in unix millisecond in Mysql? 8. microsoft. Two dates to calculate the number of days between. MySQL recognizes values in several formats, described in Section 9. I want the difference to be returned as: 02:45:00 and not only 02:00:00. Syntax DATEDIFF(datepart, startdate, endate)The article provides examples of using the DATEDIFF_BIG() function in SQL Server. 1 Answer. Corresponds to the SQL Server DATEDIFF function using millisecond to specify the type of time boundary crossed. select (start_time - datetime (2013-08-12 19:05:34. 00 instead of 9. I am currently using this: SELECT DATEADD (S, CONVERT (int,LEFT (1462924862735870900, 10)), '1970-01-01') That's giving me datetime down to the second but I would like to maintain at least millisecond precision. Learn more about TeamsExample #1 – Calculating Age. Share. Express timediff as tenth of an hour. We will look into some of the important DATE functions available in SQL Server - DATEADD, DATEDIFF, DATEPART, etc. Sorted by: 6. datetime2 (7) Nondeterministic. Valid values can be: DD, which computes the difference in days. /* Log the duration of this procedure */ @DurationMillisecs INT, @StartTime = GETDATE (), SET @DurationMillisecs = DATEDIFF (millisecond, @StartTime, GETDATE ()) I am now trying to do this in MySQL, after some research i tried the below method but they are returning the same value as. 08. Here is a Microsoft SQL function that returns UTC time in milliseconds (Milliseconds since 1970) its result is equal to Java. SELECT * FROM #Events e1 WHERE NOT EXISTS (SELECT 1 FROM #Events e2 WHERE e2. May 2, 2022 at 13:19. SELECT DATEDIFF(millisecond, GETDATE(), GETDATE()) @vuvcpg , what on earth do you expect here for a result different the 0 milliseconds? The function GETDATE() is evaluated at once, so the query can't ever return something different the 0. Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW) This function returns the count (as a signed integer value) of the specified datepart boundaries crossed between the specified startdate and enddate. B) Using DATEDIFF() function with table column example. SET @endTime = GETDATE (); /* Find duration in milliseconds */. TimeSpan diff = d2 - d1; int millisceonds = (int) diff. Return the difference between two date values, in years: SELECT DATEDIFF (year, '2017/08/25', '2011/08/25') AS DateDiff; Try it Yourself ». 547','2020-05-26 20:10:21. Replace the hardcoded timestamp for your actual column with unix-timestamp. One month is considered elapsed when the calendar month has increased and the calendar day and time is equal or greater to the start. 6. All Functions (Alphabetical). The value date_expr1 is subtracted from. SET @endTime = GETDATE (); /* Find duration in milliseconds */. This is the final query: SELECT * FROM Terminal WHERE DATEDIFF (YEAR, LastCheckIn, GETDATE ()) < 1 AND. The TIMEDIFF () function returns the difference between two TIME values ( time1 - time2) in the format 'HH:MM:SS'. Returns the number of years, months, weeks, days, hours, minutes, seconds or milliseconds elapsed between two date/time values. See the example below. Notice that the DATEDIFF() function considers only the date components for calculation and disregards the time components. datediff takes three arguments. Please find the below screen shot. To get the difference in. uuuuuu' format. Most databases, which use SQL for querying have support for database functions. 5. If only a time value is assigned to a date data type variable, DATEDIFF_BIG sets the value of the missing date part to the default value: 1900-01-01 . All methods supported by LINQ to SQL are translated to Transact-SQL before they are sent to SQL Server. 000. Both integer (int) and big integer (bigint) are numeric data types used to store integer values. The default column name for the DATEDIFF function is DATE_DIFF. format_datetime(timestamp, format) → varchar. Definition and Usage. DATEDIFF_BIG function in SQL Server. SELECT DATEDIFF (ms, @startTime, @endTime) AS Execution_Time_In_Millisecs. ) field is an identifier or string that selects what field to extract from the source value. To accomplish this, we will utilize the rental table, which contains essential information about customer rentals, including the dates they rented. INSERT_DT is a date column with the same. Now. Below is the SQL that I currently have and everything looks to be working except for the milliseconds. Just wondering no matter how i try to divide, the column keeps on returning me 10. diff_in_milliseconds = diff. currentTimeMillis () CREATE FUNCTION dbo. The MySQL NOW () function returns the current date and time in the configured time zone as a string or a number in the 'YYYY-MM-DD HH:MM:DD' or 'YYYYMMDDHHMMSS. SELECT DATEDIFF (millisecond, '2022-09-01 23:59:59. I need difference in minutes only but SQL is returning 35 instead of 5 minutes in the first query. 0000000+00:00', @dateTimeOffset) EF Core 8. 310')-julianday ('2006-07-01 12:08:14. If you want the "exact" (as far as floating point gets) average, use. using DateDiff to find duration in minutes. 310 AM' SELECT (DATEDIFF (yy, @date, GETDATE ()) - CASE WHEN (MONTH (@date) > MONTH (GETDATE ())) OR (MONTH. 400 is:The MySQL TIMESTAMPDIFF() function is used to find the difference between two date or datetime expressions. I want to do. 2. TIMESTAMPs are actually stored as a really huge integer representing (I think) milliseconds from Midnight UTC,. The first example returns the "start" date of time in the SQL Server world. declare @myDate datetime; Select @myDate=getdate (); Select @myDate; will output. Application. 5. The units related to interval day to second are ns, nanosecond, us, microsecond, ms, millisecond, s, second, m, minute, h, hour, d, and day. The EXTRACT function works equally well with TIMESTAMP as with the Dialect 1 DATE type. But I would like to have the difference in seconds. Using an obvious constant like 2100-01-01 for the intermediate won't work without applying an additional correction. What needs to be checked is the Select query you are using to get the output of. SQL Server Lesser Precision Data and Time Functions have a scale of 3 and are: CURRENT_TIMESTAMP - returns the date and time of the machine the SQL Server is running on. Only the date parts of the values are used in the calculation. CONVERT(NVARCHAR(12), DATEADD(MILLISECOND, ISNULL(DATEDIFF(MILLISECOND, T. Truncate seconds and milliseconds in SQL. This method is one another way to find the execution time of one or a group of statements inside a stored procedure. A second contains 300 ticks, so a tick equals 3. we have to use API to get milliseconds because VB native function DateDiff doesn't. 1:15:35:025. 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. But, we have a way to get the answer. Date Interval Calculation: The number of specified date parts between two provided dates is found using the DATEDIFF () method. Datediff was available starting from SQL server version 2008. If you are trying to get the milliseconds of the difference, and you want to convert the units to seconds, you can try using something like the following: SELECT DATEDIFF(MS,'2013-06-01 21:59:59. MySQL query to convert timediff() to seconds - For this, you can use TIME_TO_SEC() function. For minus sign: date_expr1, date_expr2 The values to compare. Improve this answer. Hot Network Questions A question about a phrase in "The Light Fantastic", Discworld #2 by PratchettI know the OP's only asking about "time" durations, but for what it's worth, the pattern in @Lingo's solution scales better to durations >= 1 day than @t-clausen. starttime and etime = [exceptions2]. Print CAST (GETDATE () as Datetime2 (7)) This is too works, Thanks for your answer. 9999999'; SELECT DATEDIFF (day, @startdate, @enddate) Days, DATEDIFF. 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. 3, “Date and Time Literals” means that although earlier values might work, there is no guarantee. SQL DATEDIFF_BIG Function. sec AS pl_duration FROM pagelog CROSS APPLY ( SELECT DATEDIFF (s, pagelog_created, pagelog_end) ) x (sec) ; As you can see, first, the difference in seconds between pagelog_created and pagelog_end is taken, then the. 1 Answer. which results in. DECLARE @MyDate DATE = '2015-08-27' ,@MyTime TIME = '15:33:21.