Timestampdiff w3schools. 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. Timestampdiff w3schools

 
 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 dateTimestampdiff w3schools  All you need is to execute the code below and then use the function

Returns NULL if expr1 or expr2 is NULL . SELECT * FROM tableName WHERE TIMESTAMPDIFF (MINUTE,timestamp,NOW ()) < 10. W3Schools offers a wide range of services and products for beginners and professionals, helping millions of people everyday to learn and master new skills. Duration (startDate datetime2, endDate datetime2); INSERT INTO dbo. Langley, British Columbia. W3Schools offers free online tutorials, references and exercises in all the major languages of the web. <p> This is another paragraph. DATETIME: used for values that contain a date and time. The general syntax of this function is: TIMESTAMPDIFF (units, time-date-value1, time-date-value2) The units parameter is required, and the value returned by the function will have a data type of Decimal (31,0). 3 = vbTuesday - Tuesday. I tested it with two timestamps from different years and calculated number of seconds seems to be correct. user where createddate >= '2019-09-01' and createddate <= '2019-09-30'. com MySQL Database: Restore Database. Not supported in HTML5. Consider SQL Server function to calculate the difference between 2 dates in months: SQL Server : -- Difference between Oct 02, 2011 and Jan 01, 2012 in months SELECT DATEDIFF ( month, '2011-10-02', '2012-01-01') ; -- Result: 3. W3Schools offers free online tutorials, references and exercises in all the major languages of the web. And so is CURDATE(). TRUNC(TIMESTAMPDIFF(seconds,min(BE. Free Tutorials. Only show hours in MYSQL DATEDIFF. Sometimes, there is a need to halt the flow of the program so that several other executions can take place or simply due to the utility required. HTML describes the structure of a Web page. 0. If data is stored as a DATE or DATETIME data type, it is stored as a binary value, NOT in any particular human-readable format. . Free Tutorials. If start is greater than end the result is negative. Explore our selection of references covering all popular coding languages. DATABASE. 4. Pictorial Presentation: Example: The following statement will return the unix timestamp in seconds as an unsigned integer since '1970-01-01 00:00:00' UTC. The value returned is an INTEGER, the number of these intervals between the two timestamps. The unit for the interval as mentioned should be one of the following : FRAC_SECOND (microseconds), SECOND, MINUTE, HOUR, DAY, WEEK,. 791140') from sysibm. Weeks, quarters, and years follow from that. But when I try to save the output "TIMEDIFF" into a temporary table as Datatype Integer/datetime/time it saves as a different value. Description. Note that truncation is not the same as extraction. To create an interval value, you use the following expression: Followed by the INTERVAL keyword is the expr that determines the interval value, and unit that specifies the interval unit. SQL elapsed-time calculations for data types are done with function, with the following syntax: DATEDIFF ( date_expression_1, date_expression_2 ); Any valid date or. W3Schools offers free online tutorials, references and exercises in all the major languages of the web. References. col ("TimeStampHigh"), "HH:mm:ss"). W3Schools offers free online tutorials, references and exercises in all the major languages of the web. Enjoy our free tutorials like millions of other internet users since 1999. Dalam tutorial. You just need to convert your dates to UNIX_TIMESTAMP. Specifies a default color, size, and font for all text in a document. However, you should avoid using the backslash ( ) because it’s the escape character in MySQL. The function is valuable. A) Using SQL Server LEAD () function over a result set example. In this article. A common SQL query WHERE clause is to just pull the data for the last n seconds. – Tim Biegeleisen Return the current time. Learn more about TeamsBack-end development refers to the server -side (how a web page works ). Improve this answer. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. ") # Output Your birthday is 19017960. UTC) and you want it in another time zone then use: CAST ( date_value AS TIMESTAMP ) to convert it from a DATE data type to a TIMESTAMP data type. Differences between DATEDIFF(), TIMEDIFF() and TIMESTAMPDIFF() In addition to the DATEDIFF() function, there are two similar functions: TIMEDIFF() and TIMESTAMPDIFF(). The "Result Size" returns the width and the height of the result window in pixels (even. that is, you have to determine for what time you want to run the countdown. Formatting only happens on output to text, and is dependent on factors like OS locale setting, or explicit format instructions provided by you. It supports the latest, stable releases of all major browsers and. so, your second date parameter subtracting from first parameter it return you 3. Returns the user name and host name for the MySQL account that the server used to authenticate the current client. W3Schools offers a wide range of services and products for beginners and professionals, helping millions of people everyday to learn and master new skills. MySQL Date Data Types. Solution 1 (difference in days, hours, minutes, or seconds): The result is: Discussion: To calculate the difference between the timestamps in MySQL, use the TIMESTAMPDIFF. W3Schools offers free online tutorials, references and exercises in all the major languages of the web. If your data is stored in the table in one time zone (i. Enjoy our free tutorials like millions of other internet users since 1999. When date_part is week (or any. W3Schools offers a wide range of services and products for beginners and professionals, helping millions of people everyday to learn and master new skills. TIMESTAMPDIFF(16, CHAR(TIMESTAMP('1997-03-01-00. - 14434. Edit: From your comment, I now see you want to. DATETIME: used for values that contain a date and time. SYNTAX. The code editor is packed with features to help you achieve more: Templates: Start from scratch or use a template. 4. Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW) This function returns a character string representing the specified datepart of the specified date. 0. However, if you want to make your website dynamic (manage files and databases, add contact forms, control user-access, etc. CURRENT_USER. at w3schools. Enjoy our free tutorials like millions of other internet users since 1999. Click on the "Run example" button to see how it works. unit: The unit can be one of the following options: FRAC_SECOND (microseconds), SECOND, MINUTE, HOUR, DAY, WEEK, MONTH, QUARTER, or YEAR. MySQL Database:. Share. MySQL TIMESTAMPDIFF function is one of the Date methods, which is useful to find the interval difference between two dates or DateTime expressions. SELECT TIMEFROMPARTS ( 14, 23, 44, 5, 1 ); SELECT TIMEFROMPARTS ( 14, 23,. With W3Schools online code editor, you can edit HTML, CSS and JavaScript code, and view the result in your browser. The unit for the result (an integer) is given by the unit argument. numeric-expression. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. 3. 在 oracle 数据库中,我们可以使用 timestampdiff 函数来计算两个时间戳之间的差值。timestampdiff 函数有三个参数:第一个参数指定时间单位,第二个参数指定结束时间戳,第三个参数指定开始时间戳。以下是 timestampdiff 函数的示例用法:Definition and Usage. Then, the outer query uses the LEAD () function to return the following month sales for each month. W3Schools offers a wide range of services and products for beginners and professionals, helping millions of people everyday to learn and master new skills. 166k 39 234 307. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. W3Schools offers a wide range of services and products for beginners and professionals, helping millions of people everyday to learn and master new skills. The code editor is packed with features to help you achieve more: Templates: Start from scratch or use a template. 1999 age: 14 and 15. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. Free Tutorials. : you're comparing dates with timestamps, and not whole days), you can simply convert two date or timestamp strings in the format 'YYYY-MM-DD HH:MM:SS' (or specify your string date format explicitly) using unix_timestamp(), and then subtract them from each other to get the difference in seconds. MySQL FROM_UNIXTIME () returns a date /datetime from a version of unix_timestamp. But the output I get is 1 (day). It supports time series analysis by allowing you to calculate the time intervals between data points. Use W3Schools Spaces to build, test and deploy code. Free Tutorials. Barbaros Özhan Barbaros Özhan. Explore our selection of references covering all popular coding languages. W3Schools offers a wide range of services and products for beginners and professionals, helping millions of people everyday to learn and master new skills. As the previous example demonstrates, the TIMESTAMPDIFF () allows you to specify a unit for the results to be returned as (in fact, it requires you to specify the unit). com MySQL Database: Restore Database. spark. Por exemplo, DATEDIFF (milliseconds, '00:00:00', '00:00:01. W3Schools offers free online tutorials, references and exercises in all the major languages of the web. If no conditions are true, it will return the value in the ELSE clause. W3Schools offers free online tutorials, references and exercises in all the major languages of the web. Join our online community and get started today! 70 Million +. W3Schools offers free online tutorials, references and exercises in all the major languages of the web. select ename, job, hiredate from emp where hiredate between '20-FEB-81' AND '01-MAY-81'. Specifies the day of the week. Statement 3 increases a value (i++) each time the code block in the loop has been executed. Step 2: Activate it using JavaScript code. Explore our selection of references covering all popular coding languages. Explore our selection of references covering all popular coding languages. W3Schools offers free online tutorials, references and exercises in all the major languages of the web. Free Tutorials. JS Do? Below is a list of the some of the things W3. Enjoy our free tutorials like millions of other internet users since 1999. The following statement uses the LEAD () function to return the net sales of the current month and the next month in the year 2017: First, the CTE returns net sales aggregated by month. This function takes three arguments: the unit of time you want to measure the difference in (e. Enjoy our free tutorials like millions of other internet users since 1999. You can use something like: DATEDIFF (TIMESTAMP (NOW ()), TIMESTAMP ('2011-12-13 14:00:00')) AS DiffDate. Arguments denoted as timestamp_exp can be the. I have my SQL statement like this trying to get the difference in 2 timestamps greater than 10 minutes. 2. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. Explore our selection of references covering all popular coding languages. In addition to a server, you get a SQL Database where you can store and access your data. Improve this answer. `Start_Date`, b. 3 Answers. * df = df. The date to compare to. -> DATEDIFF (NOW (),'1988-05-01') 2. Apart from the DATEDIFF you can also use the TIMEDIFF function or the TIMESTAMPDIFF. The datediff. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. It's easy to use and doesn't require any setup. Returns the name of the current database. It's easy to use and doesn't require any setup. 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; In addition to minute, you can use day as well. Explore our selection of references covering all popular coding languages. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. Enjoy our free tutorials like millions of other internet users since 1999. uuuuuu format depending upon the context of the function ( whether numeric or string). Lompati ke konten utama. To determine how many years old. This MySQL tutorial explains how to use the MySQL DATEDIFF function with syntax and examples. col ("TimeStampLow"),. W3Schools offers free online tutorials, references and exercises in all the major languages of the web. DATE_SUB () Subtract a time value (interval) from a date. g. The first argument must be a built-in data type of either INTEGER. Devuelve un número estimado de intervalos del tipo definido por el primer argumento, basándose en la diferencia entre dos indicaciones de la hora. For details, see Supported Date and Time Parts. 5 Date Calculations. Designed and Developed by National Informatics CentreThe 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. If so, invert NOW() and sent_datetime in the expression. 60. Open School BC is British Columbia, Canadas foremost developer, publisher, and distributor of K-12 content, courses and educational resources. W3Schools offers a wide range of services and products for beginners and professionals, helping millions of people everyday to learn and master new skills. TIMESTAMPADD () This function adds an interval to a datetime expression. . SELECT datedifference (date1, date2) FROM. Langley, British Columbia. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. The different input types are as follows: <input type="button">. EXAMPLE SET @date1 = '2010-10-11 12:15:35', @date2 = '2010-10-10 00:00:00'; SELECT TIMEDIFF(@date1, @date2) AS 'TIMEDIFF', TIMESTAMPDIFF(hour, @date1, @date2) AS 'Hours', TIMESTAMPDIFF(minute, @date1, @date2) AS 'Minutes', TIMESTAMPDIFF(second, @date1, @date2. Edit: From your comment, I now see you want to include the. Free Tutorials. The basic syntax of the statement is: SELECT TIMESTAMPDIFF (< number >,CHAR (< end timestamp > - < start timestamp >)) FROM < file >. Get your own SQL server SQL Statement: x . date_part (Optional) is the date part for which the last day is returned. Take breaks when needed,. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. Required. Weeks, quarters, and years follow from that. Enjoy our free tutorials like millions of other internet users since 1999. TO_DAYS() MySQL TO_DAYS() returns. Edit the SQL Statement, and click "Run SQL" to see the result. let startTime = new Date (timeStamp1); let endTime = new Date (timeStamp2); to get the difference between the dates in seconds ->. tsecs = time_diff. TIMEDIFF. W3Schools offers a wide range of services and products for beginners and professionals, helping millions of people everyday to learn and master new skills. In PostgreSQL, you can take the difference in years, multiply by 12 and add. 2. Returns the interval from datetime_expr2 to datetime_expr1. 3 Billion +. References. select sname, TIMESTAMPDIFF(YEAR, DATEOFBIRTH, CURDATE()) from sailors where (select. TIMESTAMPDIFF numeric-expression, string-expression. DATE_ADD () Add time values (intervals) to a date value. Syntax Diagram: 2. W3Schools offers a wide range of services and products for beginners and professionals, helping millions of people everyday to learn and master new skills. There are five data types in MySQL. However, Internet Explorer 11 and down is not supported. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. MySQL WEEK () function. SET @date1 = '2010-10-11 12:15:35', @date2 = '2010-10-10 00:00:00'; SELECT TIMEDIFF(@date1, @date2) AS 'TIMEDIFF', TIMESTAMPDIFF(hour, @date1, @date2) AS 'Hours', TIMESTAMPDIFF(minute, @date1, @date2) AS 'Minutes',. Explore our selection of references covering all popular coding languages. id. sql. Here the date1 is greater than date2, so the return value is positive. Date and time values can be stored as. References. W3Schools offers a wide range of services and products for beginners and professionals, helping millions of people everyday to learn and master new skills. However, two of them only store part of a date: TIME stores the time, and YEAR stores the year. W3Schools offers a wide range of services and products for beginners and professionals, helping millions of people everyday to learn and master new skills. The name attribute is needed to reference the form data after the form is submitted (if you omit the name attribute, no data from the drop-down list will be submitted). YEAR - format YYYY or YY. The correct logic for what you want is: WHERE DOB < DATEADD(YEAR, -60, GETDATE())W3Schools offers free online tutorials, references and exercises in all the major languages of the web. The TIMESTAMPDIFF function returns the result of begin - end, where begin and end are DATE or DATETIME expressions. Use CSS instead. one of the following could be used when comparing dates in MySQL: DATEDIFF () Subtract two dates TIMEDIFF () Subtract time TIMESTAMPDIFF () Subtract an interval from a datetime expression PERIOD_DIFF () Return the number of months between periods. W3Schools offers a wide range of services and products for beginners and professionals, helping millions of people everyday to learn and master new skills. For example, the following statement changes the current delimiter to //: DELIMITER // Code language: SQL (Structured Query Language) (sql)W3Schools offers free online tutorials, references and exercises in all the major languages of the web. MySQL TIMESTAMPDIFF function is one of the Date methods, which is useful to find the interval difference between two dates or DateTime expressions. You need to pass in the two date/datetime values, as. For example: Truncating a timestamp down to the quarter returns the timestamp corresponding to midnight of the first day of the quarter for the input timestamp. MySQL provides several functions that you can use to perform calculations on dates, for example, to calculate ages or extract parts of dates. 9 Answers. The function counts whole elapsed units based on UTC with a DAY being 86400 seconds. The return value is in ‘YYYYY-MM-DD HH:MM:SS’ format or YYYYMMDDHHMMSS. Description. This tutorial follows Bootstrap 3, which was released in 2013. Free Tutorials. To use CSS animation, you must first specify some keyframes for the animation. mysql> SELECT something FROM tbl_name-> WHERE DATE_SUB(CURDATE(),INTERVAL 30 DAY) <= date_col; The query also selects rows with dates that lie in the future. Entity names or entity numbers can be used to display reserved HTML characters. The result of the timestamp arithmetic is a duration of 00000100000000. Follow edited Mar 22, 2022 at 0:16. See Date and Time Data Types and Functions (Transact-SQL) for an overview of all Transact-SQL. Yearly Page Visits. import org. MySQL provides several functions that you can use to perform calculations on dates, for example, to calculate ages or extract parts of dates. 1239') retorna 1. 2 Answers. MySQL TIMESTAMPDIFF Function with Examples. Possible values are year, quarter, month, or week (or any of their supported variations). JS can do: Run HTML Slideshows Include (Import) HTML in HTML Sort the Content of any HTML Element Filter the Content of any HTML Element Display JavaScript Objects in HTML Read Data from Web Servers (Http Request) Hide or Show any HTML Element Add or Remove Classes on. W3Schools offers a wide range of services and products for beginners and professionals, helping millions of people everyday to learn and master new skills. W3Schools offers free online tutorials, references and exercises in all the major languages of the web. seconds, minutes, hours, etc. HTML Character Entities. parse("jun 12, 2022 01:30:00");If start is greater than end the result is negative. Follow edited May 7, 2017 at 6:54. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. ADDDATE () MySQL ADDDATE () adds a time value with a date. 4. Become a W3Schooler. Courses Practice TIMESTAMPDIFF () : This function in MySQL is used to return a value after subtracting a DateTime expression from another. W3Schools offers free online tutorials, references and exercises in all the major languages of the web. The CASE statement goes through conditions and return a value when the first condition is met (like an IF-THEN-ELSE statement). If the second date or time is earlier than the first date or time, the result is negative. Share. I did not test leap years nor dates different by hundreds of years. MySQL interval values are used mainly for date and time calculations. Free Tutorials. 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. It is tempting to replace it with DATEDIFF(), but they do different things. 4. Website Content Managed by Ministry of Labour & Employment. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. Simple but elegant. Browser ini sudah tidak didukung. I think the first one is the most efficent. date_or_time_part must be one of the values listed in Supported Date and Time Parts. If no conditions are true, it will return the value in the ELSE clause. HTH. RichardTheKiwi RichardTheKiwi. SELECT title, deweyClass, itemtypeIntroduction to PostgreSQL datediff. This means that multiple references to a function. Introduction to Oracle TIMESTAMP WITH TIME ZONE. EDIT: SET NEW. <p> This is a paragraph. The following query selects all rows with a. ). 139 2 11. Look at the TimeStampDiff, it looks like it should subtract/add your dates and can output the result in months. References. E Shram Card Registration Portal: CSC Login, Shramik Card and Process Online Process Application Status Check Here Link. One month is considered elapsed when the calendar month has increased and the calendar day and time is equal or greater to the start. at w3schools. Try it Yourself ». For up to date solution see jurkas' answer above. You can also edit the HTML or CSS on-the-fly in the Elements or Styles panel that opens. com. Its arguments are the unit in which you want the result expressed, and the two dates for. Learn AWS. 175. Medium: Displays information in a standard font size, which is the default size. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. ), you need to learn a back-end programming language. or a combination of TIMESTAMPDIFF (YEAR) and then MONTH AND DAY and deduct the months by the value of YEAR * 12 and DAY by YEAR * 365 AND. If the condition is true, the loop will start over again, if it is false, the loop will end. UNIX_TIMESTAMP (ts1) - UNIX_TIMESTAMP (ts2) If you want an unsigned difference, add an ABS () around the expression. Example. <basefont>. W3Schools offers free online tutorials, references and exercises in all the major languages of the web. Instructions to Log In or Reset your MyEd Student Account Student Log in . Una expresión que devuelve un valor. com. 03. Therefore, if you’re looking for. It serves as a comprehensive resource for individuals who are learning or looking to enhance their skills in HTML, CSS, JavaScript, and other related technologies. TIMEDIFF () is essential for time-based analysis by enabling you to measure the duration of events or actions. DATETIME - format: YYYY-MM-DD HH:MI:SS. Mysql 5. Edit the SQL Statement, and click "Run SQL" to see the result. , -07:00 which is a difference between local time and UTC time, or time zone region name e. ) The code to be executed, by the function. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. The numbers you can use are for the following time intervals: 1 = Microseconds. W3Schools offers free online tutorials, references and exercises in all the major languages of the web. EXAMPLE. The main differences between Bootstrap 5 and Bootstrap 3 & 4, is that Bootstrap 5 has. com MySQL Database: Restore Database. References. 9 Answers. Not all systems provide this information, therefore, timeStamp may be not available for all systems/events. The default is month. W3Schools offers free online tutorials, references and exercises in all the major languages of the web. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. The range of MySQL TIMESTAMP type is '1970-01-01 00:00:01' UTC to '2038-01-19 03:14:07' UTC. DATE_FORMAT () Format date as specified. date_or_time_expr can be a date, time, or timestamp. In your case, it returns the hour difference between the two dates. The MySQL TIMESTAMP is a temporal data type that holds the combination of date and time. 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。. The time zone data can be time zone offset e. Use a proper datetime type instead. 4 TR7, a new and improved built in function, TIMESTAMPDIFF_BIG, was introduced. References. CONVERT_TZ () In MySQL the CONVERT_TZ () returns a resulting value after converting a datetime value from a time zone specified as. at w3schools. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. W3Schools offers free online tutorials, references and exercises in all the major languages of the web. References. You should take a look the TIMESTAMPDIFF function. W3Schools offers free online tutorials, references and exercises in all the major languages of the web. The schema is SYSIBM. MySQL timestampdiff function with examples is given below: 1. Functions. Returns. Medium: Displays information in a standard font size, which is the default size. Unduh Microsoft Edge Informasi selengkapnya tentang Internet. 48. The following table lists time and date functions that are included in the ODBC scalar function set. 4. Note: You need to pass two date / datetime values along with the unit (eg, day, month, etc. Marie Antoinette Dorothe Gordon. 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. 3 Answers. So, once a condition is true, it will stop reading and return the result. absolute. I am trying to do a timestamp difference in Spark and it is not working as expected. datepart The units in which DATEDIFF reports the difference between the startdate and enddate. Arthur Aleck Sandell. 33 shows the available functions for date/time value processing, with details appearing in the following subsections. Spudley. Consider SQL Server function to calculate the difference between 2 dates in months: SQL Server : -- Difference between Oct 02, 2011 and Jan 01, 2012 in months SELECT DATEDIFF ( month, '2011-10-02', '2012-01-01') ; -- Result: 3. </p>. Here is an example that uses date functions. ^^^ 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. Explore our selection of references covering all popular coding languages. let timeDiffInSeconds = Math. In PostgreSQL, you can take the difference in years, multiply by 12 and add.