Substrn in sas

In the example below, we are extracting first name from the full name.

If you do not specify length-expression , the SUBSTRN function returns the substring that extends from the position that you specify to the end of the string. Overview of DS2 Functions. General Function Syntax. Using Functions. DS2 Function Examples.

Substrn in sas

This tutorial explains how to extract last N characters or digits of a variable in SAS, along with examples. Suppose you have a product ID in which last 4 characters refers to a product category so you are asked to pull product category information. In this case, it is 10 characters long. See the image below. In order to make it run for numeric variables, we first need to convert numeric variables to character variables with PUT function. In this process, we first calculate the logarithm base 10 of the number , which gives us a result of 3. Then, by using the INT function, we extract the integer part of the logarithm, resulting in 3. Finally, by adding 1 to the integer part, we determine that the number has 4 digits. Deepanshu founded ListenData with a simple objective - Make analytics easy to understand and follow. He has over 10 years of experience in data science.

DATE Function. MDY Function. YEAR Function.

If you do not specify length , the SUBSTRN function returns the substring that extends from the position that you specify to the end of the string. ABS Function. ADDR Function. AIRY Function. ATAN Function. ATAN2 Function.

But apart from extracting parts of a string, it has another important use. The part begins with the character you specify in the start-position argument and the number of characters you specify in length. If the length of the returned variable is not defined, it is assigned with the length of the first argument. Note: The length of the resulting variable will be the length of the character value if the length is not previously assigned. The code below turns this inconsistent data into a useful text message. But what if we needed to specify the position second argument that will start extracting input relative to the end rather than the beginning of the string? Another way of achieving this is to reverse the string so that the first character becomes the last.

Substrn in sas

It can also be used to replace very specific given characters from a string. This is the most common way to use substr function to extract characters from the string. As its name indicates, the substr function you use on the right hand side of the assignment operator. Following examples will help you to understand how sub-string in SAS works by looking at different use cases.

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CDF Poisson Distribution. Optional Argument length is an integer that specifies the length of the substring. Cookie Policy. For more information, see Internationalization Compatibility. INT Function. Optional Argument length is an integer that specifies the length of the substring. RAND Function. TANH Function. Project Management JumpStart. Example 1 : Extract last 4 characters. SAS Studio. Details If the SUBSTRN function returns a value to a variable that has not yet been assigned a length, by default the variable length is determined by the length of the first argument.

Returns a substring, allowing a result with a length of zero. If string is numeric, it is converted to a character value that uses the BEST Leading and trailing blanks are removed, and no message is sent to the SAS log.

ATAN2 Function. CATX Function. RAND Function. Previous page. LOG10 Function. CV Function. EXP Function. Report abuse. OPEN Function. ABS Function. He has over 10 years of experience in data science. ADDR Function. But its worth to note the note displayed in the log. CDF Pareto Distribution. See Also.