Oracle datediff in months. This example returns the date of the next Sunday after January 1, 2000: SELECT NEXT_DAY ( DATE '2000-01-01', 'SUNDAY' ) FROM dual; Code language: SQL (Structured Query Language) (sql) It returns the following output: 02-JAN-00 Code language: SQL (Structured Query Language) (sql) Oracle doesn't have a DATEDIFF() function. Oracle datediff in months

 
 This example returns the date of the next Sunday after January 1, 2000: SELECT NEXT_DAY ( DATE '2000-01-01', 'SUNDAY' ) FROM dual; Code language: SQL (Structured Query Language) (sql) It returns the following output: 02-JAN-00 Code language: SQL (Structured Query Language) (sql) Oracle doesn't have a DATEDIFF() functionOracle datediff in months  Thanks in advance for any help; this has been driving us crazy for a few months now

I tried this: TO_DATE (sysdate) - TO_DATE (thedate, 'YYYY-MM-DD') < 5. It should be 24 months. In MS SQL Server, the DATEDIFF function is used to get the difference between two dates in terms of years, months, days, hours, minutes etc. You can't use aliases you created in the SELECT clause elsewhere in the same SELECT clause, so you need to place your FIRST_VALUE() and LAST_VALUE() functions within the DATEDIFF() function:. g. 2425. i need to find the difference of two dates as the number of months: find the last day of the month of both the dates. SELECT AVG (CAST (DATEDIFF (d, DateUsed, DateExpires) AS FLOAT)) FORM tbl. SELECT DATE '0016-08-03' - DATE '2016-07-08' FROM dual;-- -730461. (Oct 2006 - June 2005 = 16) DP_WEEK returns the distance between the weeks capturing the input dates. 2425. 5. Calculate the difference between two dates. by the way, Just new in DBeaver. The following query selects all rows with a date_col value from within the last 30 days: . trunc ( months_between ( end_date, start_date ) /12 ) Years, mod ( trunc ( months_between ( end_date, start_date ) ), 12 ) months, end_date - add_months (start_date,trunc ( months_between (end_date,start_date) )) days. PostgreSQL. SELECT * FROM EmployeeAttendance WHERE DateJoined BETWEEN '2021-01-01' AND '2022-12-31'; This query will return all employees who joined between January 1, 2021, and December 31, 2022. id INNER JOIN al ON ac. MySQL DATEDIFF: Calculating weeks, months, or years between two dates. 7 months ago. For example the difference between 1st March 2011 and 3rd March 2012 is 1. *You may also use the DATEDIFF function. from a date time value. Do this even for a single day—e. I've tried Datediff(day, start_date, end_date), but I was prompt with: invalid column name. datediff (year, [bd], getdate ()) Then you need to check if the person already had this year's birthday, and if not, you need to subtract 1 from the total. Then it calculates the number of months that have passed until your given date (@test) by fours steps: 1. it does not give me the records marked with a date '17-JAN-02'. 25) This seems to be another common approach - and was also given in a comment on my question. As with day to second intervals, the format for this is fixed. The idea is to find how many years, months, and days they have served there. ----- we travel not to escape life but for life not to escape us. Oracle offers its own solution, although does not have the DATEDIFF function. If you want the "exact" (as far as floating point gets) average, use. DateDiff<firstWeekDay>(Date1, Date2, Unit). ) The dates and their formats are separated by a comma (,) and are defined in the Data field of the. 0 days. DATEDIFF does not guarantee that the full number of the specified time units passed between 2 datetime values: -- Get difference in hours between 8:55 and 11:00 SELECT DATEDIFF (hh, '08:55', '11:00'); -- Returns 3 although only 2 hours and 5 minutes passed between times -- Get difference in months between Sep 30, 2011 and Nov 02, 2011. date_open END. AT TIME ZONE. Once you have the date difference, you can use simple techniques to express. The dates do not have to be in the same format in the extract file, but the format of each must be supported. 2. dividing by 365. FWIW, you don't need to use floor. I had a problem with a date query using the operator 'between'. It can be one of. Sorted by: 3. 3. Modified 9 years ago. So, i need to unite them to one column to check if the time difference is lower the 5. The system calculates the number of complete months between given dates. Function. Sorted by: 193. You need to add 1 to the DATEDIFF function and it will work as you want. . datediff (q,start date,end date) i. Once you have the date difference, you can use simple. The first quarter is 1, the last one is 4. DATEDIFF(datepart, startdate, enddate) Where datepart is a string that specifies the unit of time you want to use for the calculation (e. 1 Answer. This is from my own library, will return the difference of months between two dates. 3. 14977 Days 7 Hours 36 Minutes 56 Seconds. Now for testing purposes I need to compare the data for the last say 4 months from the sysdate. Here’s the step by step: Use the AGE function to calculate the difference between the end date and start date. Select DATEDIFF (MM,0,GETDATE ()) Output - 1374, If getdate () output is "2014-07-23 19:33:46. End Function. The @DATEDIFF calculation function for Essbase returns the difference between two input dates. sql-server-2008. If IsDate (startdate) and IsDate (enddate) Then. Example 3: Comparing dates for elapsed time (in months) since a given date: Using the DATEDIFF function, we can calculate the elapsed time in months from a specific date until the current date. 365 days elapse between the two dates. I recommend you have a stab yourself. As shown clearly in the result, because 2016 is the leap year, the difference in days between two dates is 2×365 + 366 = 1096. 65. It’s a seven byte store of century, year, month, day and hour, minute and second. Month-difference between any given two dates: Have a look at the TIMESTAMPDIFF () function in MySQL. DATEDIFF with examples DATEDIFF function accepts 3 parameters, first is datepart (can be an year, quarter, month, day, hour etc. 6. So, this expression converts SYSDATE to a string, using whatever local settings are on your system. In Oracle, MONTHS_BETWEEN(date1, date2) function returns the number of months between two dates as a decimal number. A string within single quote marks, in the format of 'YYYY-MM-DD[*HH:MI[:SS]]', where * can be a colon (:) or a blank space, or the. show moreHere is an example that uses date functions. Viewed 516 times 0 Everyone, the table relationship diagram for the database is the below one. Warning: If the Start_date is greater than the End_date, the result will be #NUM!. 16. 99. 2323 days) multiply by 24 = hours, another 60 = minutes, another 60 = seconds. In most use cases, Snowflake correctly handles date and timestamp values formatted as strings. If date1 is earlier than date2, then the result is negative. Hi tom, I want day, month, minute and years difference everyting in seconds. Author. Table 9. 2) format. The schema is SYSIBM. Functions. Examples of Results in Months. NEXT_MONTH: Returns the first day of the next month after the specified date. SELECT DISTINCT Test, FIRST_VALUE (CONVERT(DATE, datetime)) OVER (ORDER BY datetime DESC) StartDate,. InDays) - (Pattern. Take these examples: Example 1 Date 1: 10th March 2011 Date 2: 3rd Feb 2011 MONTHS_BETWEEN = 1. July 16, 2013 at 3:32 pm. What this allows you to do is pass in two TIMESTAMP or DATETIME values (or even DATE as MySQL will auto-convert) as well as the unit of time you want to base your difference on. date. DATEDIFF(MONTH, 0, '2-14-2015') --returns month. Here’s the step by step: Use the AGE function to calculate the difference between the end date and start date. 0 is for 1/1/1900, and getdate is the current date --(i used a set date bc dates will change as this post gets older). 5 = 0. The first day of the year is 1. Just divide the total by 7 to get the weeks and then calculate the remaining days. date_from, evnt. From the Oracle documentation: MONTHS_BETWEEN returns number of months between dates date1 and date2. Note that it is subtracting the second from the first, so you must have them in this order. mm') month, 13 count(*) days 14 From calendar 15 group by to_char(datum, 'yyyy. (Quarter 4, 2006 - Quarter 2, 2005 = 6) DP_MONTH returns the distance between the months capturing the input dates. January 30, 2004 - 7:26 pm UTC. Funciones comúnmente utilizadas de Oracle: DateDiff devuelve una función personalizada para el intervalo entre dos fechas (Por supuesto, hay otros métodos para lograr, en ORACLE los tipos de fechas se pueden comparar directamente, y finalmente dar ejemplos de métodos). Also to note that: DATEDIFF. Date Interval Calculation: The number of specified date parts between two provided dates is found using the DATEDIFF () method. 2188940092. You can even find the number of hours, minutes, seconds, and so on in terms of details in between the two. Oracle Essbase計算および問合せリファレンス. Thank you. Hi Ive been having an issue with getting the correct difference in a date from the current month not including the day. SELECT DATEADD ( year, DATEDIFF ( year, 0, GETDATE ()), 0 ) 這個 SQL 的技巧是先取得和 1900-01-01 - 也就是上面的 0 的意思,SQL Server 中的第零天 - 差幾年 (從 DATEDIFF 得到一個整數),再用 DATEADD 加 0 來將整數再轉成日期的型態。. WHERE -- >= 2016-02-01 00:00:00. For example, suppose you have values below the start and end times. Each Standard calendar week is defined to start on Sunday and it spans 7 days. You have the option to change the data type there. So you just have to multiply to get the result in minutes instead: SELECT (date2 - date1) * 24 * 60 AS minutesBetween FROM. The add_days variable can be negative. 2 Answers Sorted by: 7 Why do you believe that it is not a good idea to subtract two dates to get the number of days between them? That's certainly the. Summary: Hi Team, I am scheduling an OTBI report. 510345 May 24 2006 — edited May 24 2006. The Oracle ROUND () function takes two arguments: 1) date. The format argument is optional. Date parts examples are day, week,. Oracle Oracle Database Release 19 SQL Language Reference MONTHS_BETWEEN Syntax Description of the illustration months_between. You want to pass TIMESTAMP arguments to the function and when you add years you also need to ensure that you propagate the fractional component of the timestamp (since ADD_MONTHS returns a DATE data-type without fractional seconds): Unfortunately, Oracle SQL doesn't allow the DATEDIFF function. If date1 and date2 are either the same days of the month or both last days of months, then the result is always. Push out all due dates by one week. If you really want 'datediff' in your database, you can just do something like this: Now, i just create a view to demonstrate with: SQL> select datediff ( 'ss', d1, d2 ) seconds from temp_view; SECONDS6269539. Answer: You can use the months_between function and convert it easily yo years between and decades between two dates: months_between/12 = years between. Which leads me to believe that it is treating February. I tried this selectExample: Oracle MONTHS_BETWEEN() Function - w3resourceHow to calculate age in T-SQL with years, months, and days. Sep 16, 2015 at 5:55. select datediff (q,'03-30-2005','04-01-2005') will return 1. First you get the number of years from the birth date up to now. 33 shows the available functions for date/time value processing, with details appearing in the following subsections. SQL> ed Wrote file afiedt. Table 9. I know it exists in SQL Server. ) and the. select (dt1-dt2) * 24 * 60 * 60 from t; dt1-dt2 gives diff in days (eg: 1. I want get number of day difference between that date and date of today. In Oracle, dates are just numbers. This does it excluding the days out but date part rather than description. sql. SELECT DATEDIFF (YY, DateOfBirth, GETDATE ()) - CASE WHEN RIGHT (CONVERT (VARCHAR (6), GETDATE (), 12), 4) >= RIGHT (CONVERT (VARCHAR (6), DateOfBirth, 12), 4) THEN 0 ELSE 1 END AS AGE. 25 = 0. To answer your question to find all records that occurred last month. January 30, 2022 5:11 PM / SQL. 1. g. In that case the real year difference is counted, not the rounded day difference. In SQL Server here's a little trick to do that: SELECT CAST(FLOOR(CAST(CURRENT_TIMESTAMP AS float)) AS DATETIME) You cast the DateTime into a float, which represents the Date as the integer portion and the Time as the fraction of a day that's passed. If you want an integer. For formatting functions, refer to Section 9. %DateAdd . This can have results that you are not expecting. The first week of the year is 1. +1 This will work for every year difference. DAYS function. Its primary languages are SQL, PL/SQL and Java, but it also includes support for C and C++. For each employee hired before 1992, display the employee’s last name, hire date and calculate the number of YEARS between TODAY and the date the employee was hired. ) Startdate = 2014-04-03 enddate = 2013-04-03 Result should be 12 as OP said. , SYSDATE - pr. Learn how to use The SQL Server DATEDIFF() Function to return the difference between two dates. For example, this function returns 1. Parameter Description; date1, date2: Required. Value)/30. i. I want to calculate the difference between two dates in OBIEE10g in Year/Months/Days format similar to the output of below SQL. This function accepts three parameters − the type of interval to measure (such as year, quarter, month, hour, minute, etc. I am trying to come up with a way in Oracle to calculate the difference between dates in days. There are many tricks to generate rows in Oracle Database. DATEDIFF(date1, date2) Parameter Values. Answer: Oracle supports date arithmetic and you can make expressions like "date1 - date2" using date subtraction to get the difference between the two dates. I believe you want: Select id, datediff (day, min (hire) max (hire)) as Difference From Employees group by id having count (terminated) < count (*) -- at least one NULL value. Syntax¶ MONTHS. This post has been answered by 630199 on Jun 1 2009. The months_between function returns the elapsed months going from the second date to the first. Share. 一重引用符で囲んだ'YYYY-MM-DD[*HH:MI[:SS]]'形式の文字列(*はコロン(:)または空白でも可)、または現在の日付を返す引用符なしの@DATENOW. DiffMonths ("05/01/95",. date_part is the part of date e. 2. Instead, you can use simple arithmetic with Oracle dates, where subtracting one date from another gives the number of days, and where you can add an subtract days from a given date. type = 'P')) AS total_hour FROM a INNER JOIN ac ON ac. 32. Functions, you can call DateDiffDay: var ans = from t in Table1 group t by 1 into tg select tg. That's certainly the standard way to do that sort of date arithmetic in Oracle. DATEDIFF accepts either. I am looking for a way to implement the SQLServer-function datediff in PostgreSQL. This function adds a specified number of days, months, and years to a given date. You could always create your own custom function in the module: Function MonthDiff (startdate, enddate) ' return number of months between two dates. Again, under Column Tools you have the option for Sort by column. month ( [bd]) > month (getdate ())Oracle is an object-relational database management system. g. (Oct 10, 2006 - June 14, 2005 = 69) In SQL Server, there is a function datediff with datepart 'q'/quarter which behaves as follows :--. Date2Date. SELECT PROJ_TASK. (Oct 2006 - June 2005 = 16) DP_WEEK returns the distance between the weeks capturing the input dates. dp_monthは、入力日付を取得する月間の距離を返します。 (2006年10月) - 2005年6月= 16) dp_weekは、入力日付を取得する週間の距離を返します。 各標準カレンダ週は日曜日に始まり、7日にまたがるように定義されています。 (2006年10月10日 - 2005年6月14日= 69)The result only contains the year, month and day, not the time. DATEDIFF is a common function in the SQL Server to find the number of days between two dates. A custom option dialog displays with an empty box. You've told it to compare the. Note that SQL Server DATEDIFF(month, date2, date1) function does not return exactly the same result, and you have to use an user-defined function if you need to fully emulate the Oracle MONTHS_BETWEEN function (see. Here are the 10 federal holidays a year, almost one per month: New Year’s Day on January 1; Martin Luther King’s Birthday on the. Viewed 20k times. DayCount) How can I do this in SQL (needs to work in MSSQL Server and Oracle)?Month and day of the year don’t appear to be factored into the equation. When a user enters JAN 2009 - I want the worksheet to show data from Jan, Feb, Mar, Apr, May and June (2009). This page provides you with the most commonly used Oracle date functions that help you handle date and time data easily and more effectively. Hot. Using SQL Server, I would do something like: select dateadd (month, num, firstdate) as mon from (select row_number () over (partition by NULL order by (select NULL)) as num from Information_Schema. Multiply the result of step 1 by 12 to transform it to months 3. Sorted by: 10. In this, we will add the number of years that we expect this person to turn in a given year, based on the DATEDIFF( ) results. Is there another alternative for sql oracle? Is it in this case TRUNC and if so how? SELECT DISTINCT al. In SQL Server 2012 you can use EOMONTH (Transact-SQL) to get the last day of the month and then you can use DAY (Transact-SQL) to get the number of days in the month. › Oracle Analytics Cloud and Server. You don't need to generate all the days as it'll be inefficient; just use a recursive sub-query factoring clause to iterate over each month: WITH months (. In Calculating Work Days you can find a good article about this subject, but as you can see it is not that advanced. datediff; sysdate; Share. g. startdate, SYSDATE) Keep in mind that MONTHS_BETWEEN() will return fractions of months, so use TRUNC() or ROUND() if you need an integer number. g. What's the function in Oracle that would be the equivalent to DATEDIFF in the SQL Server? On Oracle, it is an arithmetic issue: Select DATE1. I have an application which calculates age on the specific date completely that is in years-months-days . This works, but it is a bit clumsy compared to the sql server function:To get the difference between two date columns we can use DATEDIFF function in SQL Server and in Oracle we can just subtract two columns as shown below . 000 READDATE < DATEADD(month, DATEDIFF(month, 0, GETDATE()) - 10, 0). Oracle SQL time difference in HH:MM:SS. To retrieve this number, use any of the following functions: Today (), TodateEx (), GetFirstDate (), GetLastDate (), DateRoll (). Example 1: Fetching Employees who Joined Between Certain Dates. – user330315. My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts. References: ( found on on 05/15/2015 ) 1. The datepart value cannot be specified in a variable, nor as a quoted string like 'month'. fin,NEW. Months "m" Quarters "q" Years "y" firstWeekDay (default value is 1) is a parameter that can be used if you are returning the length of time in weeks. SELECT DATEDIFF(day,'2008-06-05','2008-08-05') AS DiffDate from dual is not working in SQL ERROR : ORA-00904: "DATEDIFF": invalid identifier 00904. g. Syntax DATEDIFF (datepart ,startdate ,enddate) datepart Abbreviations year. Few examples of DATEDIFF: DATEDIFF - Example 1 Here, in this example, datepart is "day": SELECT DATEDIFF(day,'2016-06-05','2016-08-05') AS DiffDate. mm') 16. 1. 3. Fractions are allowed; you can add 2. WEEK: returns the week number in the year. Each day is 1 integer. In this Document. In Oracle, MONTHS_BETWEEN(date1, date2) function returns the number of months between two dates as a decimal number. You can't transform this value to date by to_date function. Let’s see a few examples of SQL subtract date from the DATEADD function: In the below example, we are adding one month to the existing date ‘20220730’. DP_MONTH returns the distance between the months capturing the input dates. So if there are two dates separated by one day, the year difference can be 1 (see select datediff (year, '20141231', '20150101') ). You have to cast it first, using to_date: select to_date ('2000-01-01', 'yyyy-MM-dd') - to_date ('2000-01-02', 'yyyy-MM-dd') datediff from dual ; The result is in days, to the difference of these two dates is -1 (you could swap the two dates if you like). You want to pass TIMESTAMP arguments to the function and when you add years you also need to ensure that you propagate the fractional component of the timestamp (since ADD_MONTHS returns a DATE data-type without fractional seconds):Unfortunately, Oracle SQL doesn't allow the DATEDIFF function. (The valid formats 1,7,10,11 will be described later. This function is not sensitive to the NLS_CALENDAR session parameter. 3. I am looking for solution how to select number of days between two dates without weekends and public holidays. OutSystems can use both Oracle and MSSQL as its primary database. DAYS(date2 - date1). If the dates are really timestamps, then this is easy - subtract them and the result is a day to second interval. Base_DateDiff counts the number of days between the two dates. 25) This seems to be another common approach - and was also given in a comment on my question. Javascript. For formatting functions, refer to Section 9. Teams. When subtracting two date datatype values, the result is number of days. DateDiff. Syntax. 2. 1. year, month, day), it takes into account only a certain element and higher elements in the time hierarchy – but not lower elements. So, it starts with RIGHT(“00”. I hope you will like the SQL Date Functions Examples article. datediff (q,start date,end date) i. @WernfriedDomscheit YYYY-MM-DD is not a date it is just a formatted string. Date Part Flexibility: Years, months, days, hours, minutes, and seconds are among the date parts that are supported. 2. DATE_DIFF = 1. Simply i need to convert this: SELECT FLOOR(DATEDIFF(NOW(),`startdate`)/365. NEW_TIME returns the date and time in time zone timezone2 when date and time in time zone timezone1 are date. 15 between 2 values that are 1 year, 1 month and 15 days apart. I have a creation date column in the table. When you multiply it by 24 (number of hours in a day), 60 (number of minutes in an hour) and 60 (number of seconds in a minute), the result is number of seconds (DIFF_SECS). SELECT DATEDIFF (month,'2011-03-07' , '2021-06-24'); In this above example, you can find the number of months between the date of starting and ending. We would like to show you a description here but the site won’t allow us. Solution. SQL was invented in the 1970s by IBM Computer Scientists. So I am porting many SQL Procedures to Oracle. First put a start date in a cell, and an end date in another. 9. DateDiff. Commonly used datepart units include month or second. for example Feb-15th to Mar-15th is a month. NEXT_DAY: Returns a datetime value that represents the first weekday, named by string-expression, that is later than the date inexpression. The Question asked for "6 months from the system date". The easiest is the connect by level method: Copy code snippet. created_date), 'HH24:MI:SS') This gets the difference between the dates as a. DP_MONTHは、入力日付をキャプチャする月の間隔を返します。(2006年10月- 2005年6月= 16)CONCAT((DATEDIFF(Minute,StartDate,EndDate)/60),':', (DATEDIFF(Minute,StartDate,EndDate)%60)) TimeTaken , and instead of calculating time difference once again using datediff if I can use the time taken value column which is already calculated the query execution will be faster. select trunc (months_between (:end_date,. This parameter determines which day of the. For example, from 2/10 to 3/10 is considered one month, and from 2/10 to 3/15 is also considered one month. EXTRACT the number of years from the interval. user637544 Jun 1 2009 — edited Jun 1 2009. The days are in two different, adjacent months, so the answer is 1 month difference. Share. 8. getYear () * 12 + date2. The table contains the data about each staff member’s. Then type a formula like one of the following. The first one involves getting the difference in days and then converting it to 'x year y month z days'. Therefore, if you’re looking for. Follow answered Oct 5, 2009 at 15:32. 0 ELSE 0 END AS 'MonthDifference'. then the following should be the result. StartTime: 2022-27-27 14:00:00 EndTime:2022-12-12 19:30:00 Firstly, to find the time difference, we will use. Note, that since DATEDIFF returns an integer value, the result also will be an integer. DATE_FORMAT () Format date as specified. In the empty box, enter the date format that you want to use. Phil The current month (last date in db so in spetember we get results for august) Aug will be represented by MAX[Date] I neet the total for AUG, July, June so im trying to get the aggregate sales for the last 3 months as one number select max ([retailsales. When you subtract two dates in Oracle, you get the number of days between the two values. It has column UPDATED and CREATED. The system always returns a positive number regardless of which date. Viewed 44k times 3 I've got 2 date columns in my table (start_date, end_date). DATEDIFF in Google BigQuery . DATEDIFF SQL Server function. ) The dates and their formats are separated by a comma (,) and are defined in the Data field of the. The following illustrates the syntax of the DATEPART. SELECT startDate, endDate, DATEDIFF( endDate, startDate ) AS diff_days, CAST( months_between( endDate, startDate ) AS INT ) AS diff_months FROM yourTable ORDER BY 1; There are also year and quarter functions for determining the year and quarter of a date respectively. date_from) = 1. 2. SQL Server ignores that this is just one day. count the number of elapsed time, taking care of daylight savings: day+1 - day = 1 = 24h (but using midnight time and daylight savings it could be 0 day and 23h)Find Difference Between two dates in YEARS with Oracle. (year/month/date from date) //oracle function for extracting values from date. Hi team i need to get the exact month differences between two dates i am using oracle sql for my project . 997268 (0 year + 365/366 years) So, in summary, the output (in DECIMAL (7,6)) from the above two examples would be: 1. If this format has been used to. ). It has been tested on a wide range of years (including leap ones) and more than 700k combinations of dates (including end of every months). In Oracle SQL, I want to display the difference between two dates in the format 'x years y months z days'. Sorted by: 10. 2. Extract a value of a date time field e. 0 for the month differnce the standard sql is DATEDIFF, in this function you must pass 3 params, if you must calculate the difference from 2 columns, c1 and c2, you must do this query . e. 1. This is going to be short:. For example, using the standard SCOTT. date_open are both of type date, you can simply subtract them to get a difference in days. This is not permitted when the subquery follows =, !=, <, <= , >, >= or when the. SELECT DATEDIFF (month,'2011-03-07' , '2021-06-24'); In this above example, you can find the number of months between the date of starting and ending. Kindly help on this. unit: The unit can be one of the following options: FRAC_SECOND (microseconds), SECOND, MINUTE, HOUR, DAY, WEEK, MONTH, QUARTER, or YEAR. 1. Kindly tell me how to calculate age as in years month days. getMonth (); int m2 = date2. This is my code. So, for example: WHERE date2 - date1 BETWEEN 60 AND 90. using the following expression. January=1, February=2, etc. 0- 64bit Production With the Partitioning and Data Mining options'. 4193548. datediff isn't a function in Oracle. Each Standard calendar week is.