# What is Intnx function in SAS?

## What is Intnx function in SAS?

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. (To convert the SAS date value to a calendar date, use any valid SAS date format, such as the DATE9. format.)

**What is MDY function in SAS?**

The MDY function converts MONTH, DAY, and YEAR values to a SAS date value. For example, MDY(10,19,1999) returns the SAS date value ’19OCT99’D. Syntax: MDY(month,day,year) Arguments.

**How are SAS business days calculated?**

You can use the INTCK function with the WEEKDAY interval to come up with that number. diff = intck(‘WEEKDAY’, start_date, end_date); If you want to compute the number of working days between two dates, and assuming that every weekday is also a workday, this is perfect.

### How do I use Intnx in SAS?

The syntax for the INTNX function is as follows: sas_date_value = intnx(‘Interval’, start_date, number of intervals to add); The available intervals are Day, Week, Month, Qtr (quarter) or Year and must be enclosed in quotes. The start date must be a SAS date and the number of intervals must be an integer value.

**What does Sysfunc do in SAS?**

%SYSFUNC allows us to convert a macro variable using a format without having to resort to a data step. This example converts a macro variable date string into a macro variable containing the SAS date representation using an existing SAS format.

**What is Datepart SAS?**

The DATEPART function determines the date portion of the SAS datetime value and returns the date as a SAS date value, which is the number of days from January 1, 1960.

#### How do you add days in SAS?

- Syntax INTNX in SAS :
- INTNX – add days to date.
- INTNX – add weeks to date.
- INTNX – add month to date.
- INTNX – add year to date.
- INTNX – Populate First date of a Month.
- INTNX – Populate Last date of a Month.
- INTNX – Populate First date of a year.

**How do I get weekday in SAS?**

To Get day of week from date in SAS we will be using weekday() Function. data emp_det1; set emp_det; dayofweek= weekday(Birthday);

**How do you add a day in SAS?**

## What is _N_ in SAS?

The SAS automatic variable _n_ represents the number of times the data step has iterated. As an automatic variable, _n_ is created automatically by SAS when a data step is performed. _n_ is temporary, meaning it is not kept on the dataset after the data step is finished.

**What is PUTN function in SAS?**

Enables you to specify a numeric format at run time.

**What is date9 format in SAS?**

We use the date9. format to see dates in the form ddmmmyyyy. This is specified on a format statement. PROC PRINT DATA=dates; FORMAT bday date9. ; RUN; Here is the output produced by the proc print statement above.

### How do I add 7 days to a date in SAS?

1. intnx(‘day’,’20nov2002’d,-7); to increment the date by -7 days (seven days earlier). SAS subtracts seven days from 15,664, the SAS date value for November 20, 2002. The result is 15,657, the SAS date value for November 13, 2002, as expected.

**Which SAS function returns the day of the week of a SAS date value?**

WEEKDAY Function

From a SAS date value, returns an integer that corresponds to the day of the week.

**How do you create a date variable in SAS?**

A SAS date can be created using the MDY function so that you supply the values for the month, day, and year values. data one; input month day year; datalines; 1 1 99 02 02 2000 ; /* Use the MDY function along with variables representing the month, day, */ /* and year values to create a SAS date.

#### What is CAT CATS Catt and CATX?

CATT: Concatenates strings removing trailing blanks. CATS: Concatenates strings removing leading and trailing blanks. CATX: Concatenates strings removing leading and trailing blanks allowing the user to define a separator that separates the strings.

**What is the difference between CATS and CATX in SAS?**

The CATS function is similar to the CATX function in that both functions concatenate strings as well as remove leading and trailing blanks. However, unlike the CATX function, CATS does not insert separators into the string.

**What does _N_ 1 mean in SAS?**

That is not true. As the Documentation says: “The _N_ variable is initially set to 1”. That means that the _N_ variable is equal to one before any observation is read into the PDV, i.e. before any Set Statement. The _N_ variable increments by one each time the data step passes by a data statement.

## How do you extract the day of the week in SAS?

Here the DAY function extracts the day value from the date variable DOB and saves it in the new numeric variable days. Given a SAS date value, the WEEKDAY function extracts the day of the week from a SAS date value as a number from 1-7. Definitions of numeric codes returned from the WEEKDAY function.

**How do I get the year from a date in SAS?**

Given a SAS date value, the YEAR function extracts the year as a numeric value. Where date is a SAS date value that is specified either as a variable or as a SAS date constant. Here the YEAR function extracts the year portion from the date value variable DOB and saves it in the new numeric variable yr.

**Why does SAS internally record datetime variables as integers?**

Regardless of how the researcher records dates or times in their dataset, SAS “internally” records datetime variables as integers. This helps to simplify the computations when computing the differences between dates. SAS time values are stored internally as the number of seconds between midnight of the current day and another time value.