. Many a times while working with dates we need to compare multiple dates and need to calculate the differences in days / months / years / quarters etc. Then print variables from that data set. If the interval is year then the number of boundaries between 31Dec2020 and 01Jan2021 would be 1. Dictionary of Language Elements. The INTCK function is used to obtain the number of time intervals between two dates. 01jan60. Viewed 100 times 1 I have this dataset and need to calculate the days' difference between each dose date per period. . ); Example -. Person Day 1 Release Date Sales Person Day 2 Release Date Sales. These two functions complement each other: INTCK computes the difference between two data, while INTNX. 3 in decimal arithmetic. I originally have the INTCK function in the "ON" section for the join, but I moved it to "WHERE" since this sped up the processing time. Use them with the INTCK and INTNX functions and with procedures that support numbered lists (such as the PLOT procedure). '. You can create multiples of the intervals and shift their starting point. Macro doesn't use quotes to mark text like the DATA step does, and even though you are calling a DATA step function, the processing is in MACRO, not DATA step, so the quotes will usually just mess things up. 000 diff1=2,962. SAS Interface to Application Response Measurement (ARM) Security. date1 = today (): Returns today's date as a SAS date value. You provide the start time, the end time, and the desired interval, and the INTCK function returns the difference in seconds, minutes, or hours. format. Especially when trying to find newborns where age is less than 1. To remember the difference between these two functions easily, focus on the first three letters and the last two letters separately. Thanks a lot for your reaction! What I try to accomplish is the following: I have a dataset that has monthly observations for the following variables from CRSP (i. This means that YRS would have been 29 for any DOB in 1975 as well as for any second date in 2004. INTCK () is basically used to get the number of time intervals between two dates. i tried the code below : data eail ; infile cards dlm='09'x truncover ; input NO 1-2 Code $ Stn_Name: $25. Also note posting pictures of data does not help, we need to see the structure of the data to determine things, is that actually a SAS numeric datetime variable for instance? Intck/nx need nuermic SAS datetime variables to work with. Couldn't figure out why the intck function return wrong days. Syntax INTCK in SAS: INTCK (‘Interval’, start_date, end_date) Interval – can be in minutes, seconds, hours,weeks, days, months,quarter and year. . Artificial Intelligence. When you use the INTCK function by default it is considered as a. As for 3): intck () does logically noting else than counting the rows in your working days table between two dates. from. If you want to present this number of seconds as HH:MM:SS, you could use the proper format, which is the TIMEw. There are three parts to translating: INTNX ("MONTH", t1. Series #. SAS INTCK ( ) function is one of the important date functions in SAS. if end is charecter then do as following. SAS 区间函数 INTNX 和 INTCK. %let Start_Date=%sysfunc(inputn(20150301,yymmdd8));Yikes. It's joining two datasets using the amaskcd field as the key. ); start set: The initiate date; out target: The stop date; method: Count. Accessing Data. Cloud Computing. Difference Between two dates using INTCK function in SAS: difference between two dates in days, weeks, months & year in SAS. The following example uses the DATEDIFF() function to compare the requested delivery date with the ship date in days and return if the order is on-time or late:. They are 'DISCRETE' (the default) and 'CONTINUOUS' (or "D" and "C"). Re: Nested SYSEVALF Errors in Macro. The variables current1 and current2 are assigned the current date using the date( )and today( ) functions. INTNX (timeUnit, startDate, numberOfUnits) This form of the INTNX function returns the first day of the specified time unit. I know how to do it and you can see the code below. . e. SAS Certification Part 12 INTCK & INTNX FunctionManage DataPerform calculations with date and datetime values and time intervals by using the functions INTC. Here's my code: DATA newdata; SET olddata; newvariable = INTNX ('month',olddate,0,"B"); RUN; The log says: Argument 2 to function INTNX is invalid. Saturday(7). end1=input (end,yymmdd8. Sorted by: 4. 47 months. FORMAT MY_DATETIME: DATETIME20. I'm using SAS with SQL procedures. MIN_DATE. The INTNX function increments (either. intck() returns the number of interval boundaries. The last date of the last month can be calculated using INTNX function with alignment= 'E'. . The SAS function to shift a date is INTNX(). Instead of adding just one interval, you can use the increment argument also to add multiple intervals to a. . «. (Note: this article originally appeared on sasCommunity. DATA y; SET test; Minutes = INTCK('minute',start,end); PROC PRINT DATA=y; VAR Start End Minutes; WHERE mapinfoid<4; RUN; Obs Start End FTMinutes 1 31DEC01:22:00 01JAN02:02:00 240. g. Start_date and end_date are between two dates which we will be finding interval. 1 About SAS Enterprise. Hello SAS Community, I am working on a SQL and SAS data. This was just an example to help you understand what it means. This page lists all possible intervals. Digital Transformation. If the second date is later than the first date then 0 is returned. When dealing with months, it measures the number of "1st of the month" dates within the interval. You need to apply a format to the date value so it displays properly. (end_dt) Parameter 4 is the method. The syntax of INTCK function is as follows: INTCK (interval, start date, end data, method) interval: Interval to calculate (day, week, month, quarter, year etc. 11 = 4-YEAR intervals starting on November. W3Schools offers free online tutorials, references and exercises in all the major languages of the web. . A DataFrame in pandas is analogous to a SAS data set - a two-dimensional data source with labeled columns that can be of different types. SAS tem uma grande variedade de funções integradas que ajudam na análise e processamento dos dados. Using intck will say there is 1 month interval between the two, so Month = 1; Temp is set to Date1 + Month, but to the same day, hence Temp = 09/03/2011. INTCK and dates with DEC 31. A previous Databricks blog post introduced Databricks and PySpark to SAS developers. SAS INTNX() is the function that needs parameters like Interval, start_date, and a number of intervals to be added for a specified date value. This simply consists of subtracting one month if the day number of somedateis earlier than the day number of. (To convert the SAS date value to a calendar date, use any valid SAS date format, such as the DATE9. ; today = DATE (); days = today - birthday; age = floor (days / 365); DATALINES; 01 122275 02 010865 03 030586 . In SAS, you use the INTCK function to calculate the difference between two timestamps. Because start_dt - 1 will fall in previous month and will add '1' to the result of intck. You can use the INTCK function in SAS to quickly calculate the difference between two dates in SAS. intck(‘month’,birth,somedate) returns the number of times the first day of a month is passed between birthand somedate. It can be year, month, week, or weekday. Hello everyone, I am working with a dataset and carried out difference in recorded dates using the intck function as below: dif = intck ('day’, startdate, enddate, 'DISCRETE'); The sample result is shown below: dif frequency percent -6 18 0. So. Assume I have 2 timestamp. diff_months_cont = intck ('month', mydate1, mydate2, 'C'); run; If you set the method argument equal to ‘C’ when you calculate the difference in months, SAS calculates the number of complete months between two dates. Any idea how to recreate SURV_MM for the dates with DEC31. 24574: Calculate the number of years, months, and days between two dates. Learn how to use INTCK Function in SAS with examples. I believe this happens because the alignment option in the INTCK function defaults to DISCRETE, which counts interval boundaries in between two dates, rather than CONTINUOUS, which counts full intervals in between dates, shifted to the start date. But this is quite not true. SAS® 9. ; array holidays(6); do date. . I. e. You can use the INTCK function in SAS to quickly calculate the difference between two dates in SAS. By default, Sunday is the beginning of the week interval. dob, doe); RUN; Right now if I had the date Oct 1, 2007 and Nov 15, 2011 it gives me 49 months I want it to give me 49. Every single function in a %LET needs to be wrapped, including your INTCK () and MDY (). The. 以下のデータセットがあったとします。. How can I get the difference of the month, which is 1. seconds = datetime2 - datetime1 ; mintues = (datetime2 - datetime1)/60 ; You can also use the. ) In this article, we discuss the syntax of the SAS INTCK function and provide many examples of real-world problems. ),input (booked_to,time5. For more information on this INTCK and INTNX acts, perceive INTCK real INTNX: Two essential functions for computing intervals between dates in SAS, an items by @Rick_SAS. MONTH intervals are counted by day 1 of each month, and YEAR intervals are. A data step seems significantly easier here IMO using CALL SYMPUTX (). The increment is based on a starting date, time, or datetime value, and on the number of time intervals that you specify. There is no interval named DAYS. Remove the extra run; statement that is ending the data step definition too soon. vectorize(intck_month)(df["obs"], df["out"]) Runtime. dev. options intervalds= (workdays=mylib. The functions that can be used to take apart date values include: ) returns the day of the month from a SAS date value (. Partial intervals are not counted. is a character constant or variable that contains an interval name. ; datalines; 188 18Jul17:15:27:00 97 188. Finding the first day of the previous month is an ideal situation for using the INTNX function. In this case, my preferred solution would involve using an R version of SAS' INTCK function to do dates arithmetic in a more sophisticated way than described in my original example. I am using the intck function to calculate it with the 4th arguement (method = 'C') but I think the 4th argument just works in case of years. You can use sas function intck to find required interval. Hello. The example also shows how to create a DateTime variable where the date argument is a constant that SAS interprets as a Date. 03 -5 15 0. INTCK is not needed. There is an enormous difference between days since 1/1/60, and seconds since midnight, 1/1/60. The INTNX Syntax. However, the numbers remain the same and as you can see, I'm still getting date values in the activity_date field that are more than 14 days after the send date (2/1). Thank you for quick respond. INTCK ( interval, from, to ) ; The arguments of the INTCK function are as follows: interval. The newly created variable new_x is in numeric format. How do I label each period study date so I can carry out an intck to. can be specified either as a variable name or as a SAS date constant. INTCK – The INTCK in SAS is a function that returns the number of time units between two dates. These two functions complement each other: INTCK computes the difference between two dates, while INTNX enables you to add time units to a date value. These sample files and code examples are provided by SAS Institute Inc. Time intervals can be specified in ‘MONTH’, ‘WEEK’, ‘QTR’, ‘YEAR’ etc. options intervalds= (BankingDays=BankDayDS); data BankDayDS (keep=begin); start = '15DEC1998'd; stop = '15JAN2002'd; nwkdays = intck ('weekday',start,stop); do i = 0 to nwkdays; begin = intnx. 03 -4 20 0. /*Comparing different ways of computing age*/. Partial intervals are not counted. Difference between INTNX and INTCK Functions. From 12-25-08 to 12-25-09 is one year difference. exclude public holidays and weekends. Please identify the non-numeric type data first and change it to numeric data type using format yymmdd8. I know I'm probably overlooking something, but I figured that the following should show me the number or working days between two dates. 33 rounded to the nearest tenth equals 3*0. Probably functions requiring multiple variables from different data sets cause bottlenecks. . For instance Clent A has first_date_deposit as 15/07/2003 and last_date_deposit as 24/02/2010. For example, the following statements give dates relative to the bombing of Pearl. ) returns the year from a SAS date value (. Functions and CALL Routines. name < multiplier >< . The Basics. )); hours=intck ('hours',input (booked_from,time5. Second you can use the %SYSFUNC() macro function to call the INTCK() function in macro code. NEAREST_MONTHS (date1, date2) Returns 8 if date1 is 20/3/1997 and date2 is 23/7/1996. This function uses the following basic syntax: INTCK(interval, start date, end data, method) where: interval: Interval to calculate (day, week, month, quarter, year, etc. . Hello, I have a longitudinal dataset, where subjects are followed up for 2 weeks. (INTCK returns a negative value whenever the first date is later than the second date and the two dates are not in the same discrete interval. When I try to run the %let monthdiff=%sysfunc(INTCK(MONTH,date1,&lastdate)) line, I get the ERROR: Argument 2 to function INTCK referenced by the %SYSFUNC or %QSYSFUNC macro function is not a number and then ERROR: Invalid arguments detected in %SYSCALL, %SYSFUNC, or. (INTCK returns a negative value whenever the first date is. options intervalds= (BankingDays=BankDayDS); data BankDayDS (keep=BEGIN); start = '15DEC1998'D;WEEKDAY<daysW> in INTCK Function: The INTCK function in SAS returns the number of interval boundaries that lie between two SAS dates, times, or timestamp values. Is there a way I could return only the number of pull months between 2. PROC SQL; CREATE TABLE myTable AS SELECT BIRTH_DATE, <some function> AS DAYS_BETWEEN_BIRTHDATE_AND_TODAY FROM someTable. The COALESCE function checks the value of each argument in the order in which they are listed and returns the first non-missing value. Use the INTNX and INTCK functions to determine the week of the year (1 through 52 or 53) for a specified date. The increment is based on a starting date, time, or datetime value, and on the number of time intervals that you specify. The form of the INTCK function is: INTCK ( interval, from, to ) ; The arguments of the INTCK function are as follows: interval is a character constant or variable that contains an interval name. Tenure of an employee with company : The INTCK function is used to find out the number of months between date of joining and today's date. ) returns the month from a SAS date value (. proc sql; select * from tableATo the macro processor everything is text, so quote characters are just part of the text. (this is the date format in the dataset) I want to create a new variable that will display the total number of months that has. AGE=INT((INTCK('MONTH',DOB,refDate) - (DAY(refDate)<DAY(DOB)))/12); I stopped using it when I discovered that the calculation would sometimes produce odd results. In future posts, we will explore building efficient data and analytics pipelines involving both technologies. The form of the INTCK function is . To increment dates, we use the INTNX() function: INTCK(‘interval’, start-period, end-period) INTNX(‘interval’, start-period, number-of-increments, alignment)Re: AGE IN MONTHS. There are some missing values in there too. When using subtraction the order should be ENDDATE - STARTDATE. 6. For instance, to my historical browse IODIN use the INTCK function at determine the count of days between dual dates. left join to the master table for the months i need to check against. The INTCK function calculates the difference between two dates or times, whereas the INTNX function adds days or times to a date. Date1: 09/02/2011. Renaming date variable to perform an intck to calculate day difference. The INTNX function helps you compute the date that is 308 days away in the future from a specific date. For example: Date1 = 01JAN2000 12:00. The INTNX function will compute an incremented date value, and allows the resultant interval alignment to be specified (in your case the 'end' of the month n-months hence) data have; format date_of_last_repricing end_date date9. days=end - start + 1 ; Share. They are tricky to learn at first, but once you get the hang of them they can really. For the INTCK method, age is computed only as an integer. BAN) AS COUNT, CASE WHEN COUNT (A. For example, the INTCK () can be used to determine how many months to generate. . Since those values are in a style that the DATE informat can understand and already have quotes around them all you need to do is add the letter D after each to make them into something SAS will see as a date value. First point - most other systems I've used use a base-dating system, whether it be 1Jan1960, 1Jan1901 or similar, and allow day arithmetic. Appointment Expiration date isn't a date as you convert it earlier 0 LikesRe: intck function will not get my desired result. 3 is not an exact multiple of one tenth in binary. Work end time: 4pm. INTNX () defaults to move to the start of the interval. (start_dt) Parameter 3 is the end date. 1 Answer. Preparing and Analyzing Data. Modified 3 years, 2 months ago. You can add the 'SAME" option if you want it to move to the same relative point in the interval. Sorted by: 2. I'm not sure how to make my own intervals. comRounding by definition finds an exact multiple of the rounding unit that is closest to the value to be rounded. SAS : INTCK Function with Examples / INTCK and INTNX: Two essential functions for computing intervals between dates in SAS - The DO Loopintck: 날짜 차이 계산 *intck('day',~) : 일자 차이 intnx: 날짜를 입력 값 만큼 이동 *intnx('month',기준 날짜, 이동할 날짜구간, '옵션') : 월 기준 날짜 이동 *옵션-'s' : 동일한 날짜-'b' : 이동한 날짜 구간의 첫번째 날-'e' : 이동한 날짜 구간의 마지막 날Returns the difference between two dates to the nearest number of months. Re: INTCK Function and Rounding. Sample. . Closed 11 years ago. I need to compute a field as a date difference from today, ex the number of days from the birth date. The INTCK function counts intervals by using a fixed starting point for the interval as opposed to counting in multiples of the interval unit. intnx関数について基本の話. Example This program computes age using each of these methods (YRDIF, dividing by 365. Extra note: the two variables are already in a numeric format, I do not know why SAS is asking for a numeric. MAX_DATE ,MMD. これは、指定された実際の開始値とは異なる場合があります。たとえば、2つの日付間の月数を数えるのにintck関数を使用する場合、開始値の日付に指定した日付が実際にその月の何日であるかにはかかわらず、sasは開始値を該当月の初日として扱います。INTCK(interval,from,to) 計算從日期from到日期to中間經過的interval間隔的個數，其中interval取'MONTH'等。比如，INTCK('YEAR', '31Dec1996'd, '1Jan1998'd） 計算1996年12 月31日到1998年1月1日經過的年間隔的個數，結果得2，儘管這兩個日期之間實際. Here we want to calculate when an employee. Looks as though you're using the explicit pass-thru access to TD, so you're limited to the TD=specific SQL syntax which, obviously doesn't support SAS functions like INTCK. The Basics; DBCS Compatibility; The Basics. No matter how many actual days are between them, I need the difference in month. For the YRDIF and 365. Using the INTNX and INTCK functions to determine the week number of each week in the month. 1 Paper 261-30 Manipulating Data with PROC SQL Kirk Paul Lafler, Software Intelligence Corporation ABSTRACT PROC SQL isa popular database language with numerous extensionsfor working with numeric and character dataI need to calculate the difference between two dates in months. intck () requires three arguments: an interval designator, and two SAS dates if a date interval is specified. That is a very confusing way to write a data step. The INTCK function returns one number of time units between two data. 2 Language. Release. Since by default this function always measures from the start of the interval, the resulting calculation would be the same as if the two dates were both first shifted to January 1. The form of an interval is. You can use this function to calculate the number of days, weeks, months. 1 Answer. At 4pm the hourly clock stops. The sample code on the Full Code tab illustrates how to determine a person's current age using their date of birth. Since DATE values are stored in days you can use subtraction to calculate differences in days. ERROR: Expression using less than (<) has components that are of different data types. ) function. SAS : INTCK Function with Examples - Example 11: Loop through Dates Using a Macro. By default, Sunday is the beginning of the week interval. In some cases, like when calculating small date differences, it might not make sense to use the FLOOR function. DATA Step Programming. According to the documentation, intck with the WEEKDAY interval counts daily intervals with Friday-Saturday-Sunday counted as the same day. You will get better and faster answers when you specify the entire set of requirements in your original question. been crossed in each of these cases. This is my code. For the INTCK method, age is computed only as an integer. You can define a method to calculate differences. Since we are discussing the WEEKDAY function already, let’s look at. Here are some real-world examples of how the INTCK function is used in SAS. a=Timestamp ('1986-03-31 00:00:00', tz=None) b=Timestamp ('1986-04-18 00:00:00', tz=None) Now if I simply take the difference b-a I will get datetime. 1. INTCYCLE( 'interval' ) returns the interval of the seasonal cycle, given a date, time, or datetime interval. Third point - shrug. The INPUT Function is used to convert character variable to numeric. You can apply OBS= and FIRSTOBS= processing to. So for "31MAY13:00:00:00", it will give me "01MAY13:00:00:00". SAS intck function return wrong. So, although 22JUN2020 and 20JUL2020 belong to different months, the number of completed months between these. You will have to create a new variable in DATA step creating a new data set. ; 9 end; 10 run; dt=0 01JAN1960 dt=1 02JAN1960 dt=2 03JAN1960 dt=3 04JAN1960 dt=0. sas. INTCK function created identical values except for the dates with DEC 31. You can use the INTCK function in SAS to quickly calculate the difference between two dates in SAS. Now I want to create a new variable such that it is the first day of the corresponding month. data temp; x = '12345'; new_x = input (x,5. SAS tracks dates as the number of days since January 1st, 1960. What's New in the Base SAS 9. I want to calculate precisely how much is the difference in number of months. Interval – can be in minutes, seconds, hours,weeks, days, months,quarter and year Start_date and end_date are between two dates which we will be finding interval; So we will be using EMP_DET Table in our example. If only one value is listed, then the COALESCE function returns the value of that argument. The function INTCK ('MONTH', '31jan2013'd, '1feb2013’d) returns 1, because the two dates lie in different months that are one month apart. SAS Tutorial For Beginners Date and Time Functions in SAS Date Functions with Use Case SAS Programming Tutorial For Beginners Functions in SAS INTCK Function. The INTNX function returning a SAS date that is a specified numeric of time units go from adenine stated date. The function INTCK ('MONTH','31jan1991'd,'1feb1991’d) returns 1, because the two dates lie in different months that are one month apart. The INTCK function using the default discrete method counts the number of times the beginning of an interval is reached in moving from the first date to the second. ); start date: The start date; end date: The end date; method: Whether to count. e. I am having hard time getting the INTCK function to return the result i am using the following query. The string needs to be something the DATE informat can interpret. mnthnum1=intck ( 'month', '25aug2000'd, '05sep2000'd); mnthnum1=1. In this example, the first statement converts the values of cc , a numeric variable, into the four-character hexadecimal format, and the second statement writes the same value that the PUT function returns. ポイントは、2つの日付を、日付としてではなく8ケタの数字として見て計算してるところ。. In a DATA step, if the SUBSTR (right of =) function returns a value to a variable that has not previously been assigned a length, then that variable is given the length of the first argument. DataFrame #. I need to do further task and I don;t know how to do it. Sep 22, 2015 at 17:21. wrote: Hello and thanks for the quick response. ; If you need to keep the original variable name of cc , but as a character variable, then use the DROP. 関数INTCK('MONTH', '1feb2021'd, '31jan2021'd)では、1番目の日付が2番目の日付よりも1つ後の別の間隔内に存在するため、-1を返します。(1番目の日付が2番目の日付よりも後で、2つの日付が同じ間隔内に存在しない場合、INTCKは常に負の値を返します)。 Posted 08-31-2017 12:11 AM (7829 views) | In reply to EEEY. to an existing date variable, then you need the INTNX function. (month) Parameter 2 is the start date. sas. It does the same as the Teradata EXTRACT function with the DAY keyword. . start=21JUL2017:09:06:00. So, I've created a flag that says if Release Date = Day 1, then flag = 1 else flag = 0. What's the best way. This example is copied from SAS documentation. Adj_form1=floor((intck(‘month’,dob,today)-(day(today)<day(dob)))/12); The FLOOR function in this formula will round down to the nearest whole number. Getting Started. Dictionary of Component Object Language Elements. Data set example: Subject_ID Date Obs 10 01/02/21 1 10 01/. end date: Ending SAS date. current_year = year (date ());NOTE: Invalid argument to function DATDIF(19996,19774,'30/act') at line 92 column 19. If you want today's year you can use the date () function (or its alias today ()) and then use the year () function to extract the year. However, the sas functions such as INPUT, PUT, INTCK etc do not work inside the CONNECT TO TERADATA sql query. . Crossing a 'month boundary' does not necessarily mean that a completed month has elapsed so a correction needs to be made when the end date (somedate) is less than the. ex. The following SAS program creates a temporary SAS data set called createdates that contains six date variables. Difference between INTNX and INTCK functions. By example, in my previous article I utilised the INTCK function to determine the number of. To find the difference in values of variable between observations just use the DIF () function (related to the LAG () function). I am working on converting some SAS Proc SQL’s into SQLite queries to be used in a python program, and unfortunately it is not a direct copy and paste and there are some issues. The beauty of these functions is that they automatically handle leap years! If you request the number of days between two dates, the INTCK function includes leap days in the. The first argument of the intck( ) function, which must appear in single quotes, tells SAS what time interval you are interested in counting. 2, a fifth argument to the INTCK function was added which will also help calculate a person's age. DATETIME values are seconds. (To convert the SAS date value to a calendar date, use any valid SAS date format, such as the DATE9. if start is charecter then do as following. ); e. in this case i need data from Jan 2019 to jun 2019, that is 6 months before run date specified above. Whether you're a beginner or an advanced user, this tutorial offers a hands-on approach. The rounding unit is a power of 10 greater than or equal to 1e-15. sql. The function INTCK ('MONTH', '1feb2021'd, '31jan21'd) returns –1 because the first date is in a later discrete interval than the second date. 000 diff2=2,962. BKD_DT, 1, "B") - t1. There is no need to use INTCK () when the interval you want is the basic storage unit of the data. A string containing a formatted date representation cannot be implicitly evaluated to a SAS number, it would have to pass through input . SAS provides date, time, and datetime intervals for counting different periods of elapsed time. shift>’, date1,date2) Multiple(optional) = Multiple of intervalunit DAY50 = 50-DAY intervals Shift(optional) =starting point of interval Meaning of Shiftdepends on the Interval Interval=YEAR,SEMIYEAR,QTR,MONTH ÆShift= MONTH YEAR4. I. SAS Servers. 1. (INTCK returns a negative value whenever the first date is later than the second date and the two dates are not in the same discrete interval. Data Migration. The INTNX function returns the SAS date value for the beginning date, time, or datetime value of the interval that you specify in the start–from argument. The time unit can be selected in years, months, weeks, days, or whatever you feel like. Use INTCK to calculate the number of days between the patient’s current record’s date and the last date. Divide 21 by 31 days will give you . I found this example for custom intervals to omit holidays when counting business days in the function INTCK: I don't know how to adjust this to my holiday list. new_num=input (character-variable, 4. . If your teradata table is very large just for test get only few rows (Obs=10). Can you please help suggesting what I'm doing wrong? The output dataset is blank because intck function isn't working properly. 25, and INTCK) so that the results can be compared. This function is useful for creating intervals of a specific length between two points in time. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. if difference between two dates are 1.